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        IPCDN Working Group                                  D. Raftus
        Internet Draft                              Terayon Canada Ltd.
        Document: draft-ietf-ipcdn-docs-rfmibv2-07       September 2003
     
        Expires: March 2004
        Obsoletes: RFC2670
     
     
     
            Radio Frequency (RF) Interface Management Information Base
                        for DOCSIS 2.0 compliant RF interfaces
     
     Status of this Memo
     
        This document is an Internet-Draft and is in full conformance with
        all provisions of Section 10 of RFC2026.
     
        Internet-Drafts are working documents of the Internet Engineering
        Task Force (IETF), its areas, and its working groups.  Note that
        other groups may also distribute working documents as Internet-
        Drafts.
     
        Internet-Drafts are draft documents valid for a maximum of six
        months and may be updated, replaced, or obsoleted by other
        documents at any time.  It is inappropriate to use
        Internet-Drafts as reference material or to cite them other than
        as "work in progress."
     
        The list of current Internet-Drafts can be accessed at
        http://www.ietf.org/ietf/1id-abstracts.txt
     
        The list of Internet-Draft Shadow Directories can be accessed at
        http://www.ietf.org/shadow.html.
     
     Copyright Notice
     
        Copyright (C) The Internet Society (2003). All Rights Reserved.
     
     Abstract
     
        This memo is a draft revision of the standards track RFC-2670.
        Please see "Section 9 Changes from RFC2670" for a description of
        modifications. This document or its successor will obsolete RFC-2670
        when accepted.
     
        This memo defines a portion of the Management Information Base (MIB)
        for use with network management protocols in the Internet community.
        In particular, it defines a basic set of managed objects for SNMP-
        based management of DOCSIS compliant Radio Frequency (RF)
        interfaces.
     
        This memo is a product of the IPCDN working group within the
        Internet Engineering Task Force.  Comments are solicited and should
        be addressed to the working group's mailing list at ipcdn@ietf.org
        and/or the authors.
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     Internet Draft             DOCSIS RF Interface MIB             September 2003
     
     
     Conventions used in this document
     
        The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
        "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in
        this document are to be interpreted as described in BCP 14,
        RFC 2119 [RFC2119].
     
     
     Table of Contents
     
        1 The SNMP Management Framework ................................. 3
        2 Glossary ...................................................... 3
        2.1 CATV ........................................................ 3
        2.2 Channel ..................................................... 3
        2.3 CM .......................................................... 4
        2.4 CMTS ........................................................ 4
        2.5 Codeword .................................................... 4
        2.6 Data Packet ................................................. 4
        2.7 dBmV ........................................................ 4
        2.8 DOCSIS ...................................................... 4
        2.9 Downstream .................................................. 4
        2.10 Head-end ................................................... 5
        2.11 MAC Packet ................................................. 5
        2.12 MCNS ....................................................... 5
        2.13 Mini-slot .................................................. 5
        2.14 QPSK ....................................................... 5
        2.15 QAM ........................................................ 5
        2.16 RF ......................................................... 5
        2.17 Symbol-times ............................................... 5
        2.18 Upstream ................................................... 5
        3 Overview ...................................................... 5
        3.1 Structure of the MIB ........................................ 6
        3.1.1 docsIfBaseObjects ......................................... 6
        3.1.2 docsIfCmObjects ........................................... 6
        3.1.3 docsIfCmtsObjects ......................................... 7
        3.2 Relationship to the Interfaces MIB .......................... 7
        3.2.1 Layering Model ............................................ 7
        3.2.2 Virtual Circuits .......................................... 9
        3.2.3 ifTestTable ............................................... 9
        3.2.4 ifRcvAddressTable ......................................... 9
        3.2.5 ifEntry ................................................... 9
        3.2.5.1 ifEntry for Downstream interfaces ....................... 9
        3.2.5.1.1 ifEntry for Downstream interfaces in Cable Modem
             Termination Systems ........................................ 9
        3.2.5.1.2 ifEntry for Downstream interfaces in Cable Modems .... 11
        3.2.5.2 ifEntry for Upstream interfaces ........................ 13
        3.2.5.2.1  ifEntry for Upstream interfaces in Cable Modem
             Termination Systems ....................................... 13
        3.2.5.2.2 ifEntry for Upstream interfaces in Cable Modems ...... 15
        3.2.5.3 ifEntry for Upstream channels .......................... 16
        3.2.5.3.1 ifEntry for Upstream Channels in Cable Modem
     
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             Termination Systems ....................................... 16
        3.2.5.4 ifEntry for the MAC Layer .............................. 18
        4 Definitions .................................................. 20
        5 Acknowledgments ............................................. 118
        6 Revision History ............................................ 118
        7 Normative References ........................................ 118
        8 Informative References ...................................... 121
        9 Security Considerations ..................................... 121
        10 Changes from RFC2670 ....................................... 121
        11 Conflict Resolution with docsIfExt MIB ..................... 123
        12 Intellectual Property .......................................123
        13 Author's Address ........................................... 124
        14 Full Copyright Statement ................................... 124
     
     
     
     1. The Internet-Standard Management Framework
     
        For a detailed overview of the documents that describe the current
        Internet-Standard Management Framework, please refer to section 7
        of RFC 3410 [RFC3410].
     
        Managed objects are accessed via a virtual information store,
        termed the Management Information Base or MIB.  MIB objects are
        generally accessed through the Simple Network Management Protocol
        (SNMP).
     
        Objects in the MIB are defined using the mechanisms defined in the
        Structure of Management Information (SMI).  This memo specifies a
        MIB module that is compliant to the SMIv2, which is described in
        STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58,
        RFC 2580 [RFC2580].
     
     
     2.  Glossary
     
        The terms in this document are derived either from normal cable
        system usage, or from the documents associated with the Data Over
        Cable Service Interface Specification process.
     
     2.1.  CATV
     
        Originally "Community Antenna Television", now used to refer to any
        cable or hybrid fiber and cable system used to deliver video signals
        to a community.
     
     2.2.  Channel
     
        A specific frequency allocation with an RF medium, specified by
        channel width in Hertz (cycles per second) and by center frequency.
        Within the US Cable Systems, upstream channels are generally
        allocated from the 5-42MHz range while down stream channels are
     
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        generally allocated from the 50-750MHz range depending on the
        capabilities of the given system.  The typical broadcast channel
        width in the US is 6MHz.  Upstream channel widths for DOCSIS vary.
     
        For European cable systems, upstream channels vary by country. The
        upper edge of upstream channel allocations vary between 25 MHz to 65
        MHz, and the lower edge of downstream channel allocations vary
        between 47 MHz and 87.5 MHz. The typical broadcast channel width in
        Europe is 8MHz. The actual parameters are of concern to systems
        deploying EuroDOCSIS technology.
     
     2.3.  CM   Cable Modem.
     
        A CM acts as a "slave" station in a DOCSIS compliant cable data
        system.
     
     2.4.  CMTS   Cable Modem Termination System.
     
        A generic term covering a cable bridge or cable router in a
        head-end. A CMTS acts as the master station in a DOCSIS compliant
        cable data system.  It is the only station that transmits
        downstream, and it controls the scheduling of upstream
        transmissions by its associated CMs.
     
     2.5.  Codeword
     
        A characteristic of the Forward Error Correction scheme used
        above the RF media layer.
     
        See "Data-Over-Cable Service Interface Specifications: Radio
        Frequency Interface Specification SP-RFIv2.0-I04-030730"
     
     2.6.  Data Packet
     
        The payload portion of the MAC Packet.
     
     2.7.  dBmV
     
        A measure of RF signal voltage amplitude, whose power level is
        determined by the characteristic impedance. A zero dB signal power
        is equivalent to 48.75 dBmV signal amplitude in a 75 Ohm system.
     
     2.8.  DOCSIS
     
        "Data Over Cable Service Interface Specification".  A term
        referring to the ITU-T J.112 Annex B standard for cable modem
        systems [7].
     
     2.9.  Downstream
     
        The direction from the head-end towards the subscriber.
     
     
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     2.10.  Head-end
     
        The origination point in most cable systems of the subscriber video
        signals.
     
     2.11.  MAC Packet
     
        A DOCSIS PDU.
     
     2.12.  MCNS
     
        "Multimedia Cable Network System".  Generally replaced in usage by
        DOCSIS.
     
     2.13.  Mini-slot
     
        In general, an interval of time which is allocated by the
        CMTS to a given CM for that CM to transmit in an upstream direction.
        See "Data-Over-Cable Service Interface Specifications: Radio
        Frequency Interface Specification SP-RFIv2.0-I04-030730",
     
     2.14.  QPSK   Quadrature Phase Shift Keying.
     
        A particular modulation scheme on an RF medium. See [6].
     
     2.15.  QAM   Quadrature Amplitude Modulation.
     
        A particular modulation scheme on RF medium.  Usually expressed
        with a number indicating the size of the modulation constellation
        (e.g. 16 QAM). See [6], or any other book on digital communications
        over RF for a complete explanation of this.
     
     2.16.  RF
     
        Radio Frequency.
     
     2.17.  Symbol-times
     
        A characteristic of the RF modulation scheme.
        See "Data-Over-Cable Service Interface Specifications: Radio
        Frequency Interface Specification SP-RFIv2.0-I04-030730"
     
     2.18.  Upstream
     
        The direction from the subscriber towards the head-end.
     
     
     3.  Overview
     
        This MIB provides a set of objects required for the management of
        MCNS/DOCSIS compliant Cable Modem (CM) and Cable Modem Termination
        System (CMTS) RF interfaces.  The specification is derived in part
     
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        from the parameters and protocols described in "Data-Over-Cable
        Service Interface Specifications: Radio Frequency Interface
        Specification SP-RFIv2.0-I04-030730".
     
     3.1.  Structure of the MIB
     
        This MIB is structured as three groups:
     
        o    Management information pertinent to both Cable Modems (CM) and
             Cable Modem Termination Systems (CMTS) (docsIfBaseObjects).
     
        o    Management information pertinent to Cable Modems only
             (docsIfCmObjects).
     
        o    Management information pertinent to Cable Modem Termination
             Systems only (docsIfCmtsObjects).
     
        Tables within each of these groups group objects functionally - e.g.
        Quality of Service, Channel characteristics, MAC layer management,
        etc.  Rows created automatically (e.g. by the device according to
        the hardware configuration) may and generally will have a mixture of
        configuration and status objects within them.  Rows that are meant
        to be created by the management station are generally restricted to
        configuration (read-create) objects.
     
     3.1.1.  docsIfBaseObjects
     
        docsIfDownstreamChannelTable - This table describes the active
        downstream channels for a CMTS and the received downstream channel
        for a CM.
     
        docsIfUpstreamChannelTable - This table describes the active
        upstream channels for a CMTS and the current upstream transmission
        channel for a CM.
     
        docsIfQosProfileTable - This table describes the valid Quality of
        Service profiles for the cable data system.
     
        docsIfSignalQualityTable - This table is used to monitor RF signal
        quality characteristics of received signals.
     
        docsIfDocsisBaseCapability  - This object is used to indicate the
        highest level of DOCSIS version a cable device can support.
     
     3.1.2.  docsIfCmObjects
     
        docsIfCmMacTable - This table is used to monitor the DOCSIS MAC
        interface and can be considered an extension to the ifEntry.
     
        docsIfCmStatusTable - This table maintains a number of status
        objects and counters for cable modems. There is a comparable table
        at the CMTS, docsIfCmtsCmStatusTable, which maintains similar
     
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        counters from the CMTS point of view.
     
        docsIfCmServiceTable - This table describes the upstream service
        queues available at this CM.  There is a comparable table at the
        CMTS, docsIfCmtsServiceEntry, which describes the service queues
        from the point of view of the CMTS.
     
     3.1.3.  docsIfCmtsObjects
     
        docsIfCmtsMacTable - Describes the attributes of each CMTS MAC
        interface.
     
        docsIfCmtsStatusTable - This table provides a set of aggregated
        counters which roll-up values and events that occur on the
        underlying sub-interfaces.
     
        docsIfCmtsCmStatusTable - This table is used to hold information
        about known (i.e. ranging, registered, and/or previously online)
        cable modems on the system serviced by this CMTS.
     
        docsIfCmtsServiceTable - This table provides access to the
        information related to upstream service queues.
     
        docsIfCmtsModulationTable - This table allows control over the
        modulation profiles for RF channels associated with this CMTS.
     
        docsIfCmtsMacToCmTable - This table allows fast access into the
        docsIfCmtsCmTable via a MAC address (of the CM) interface.
     
        docsIfCmtsChannelUtilizationTable - This table provides statistical
        load usage data for attached upstream and downstream physical
        channels.
     
        docsIfCmtsDownChannelCounterTable - This table provides statistical
        data for attached downstream channels, appropriate as input for load
        usage calculations.
     
        docsIfCmtsUpChannelCounterTable - This table provides statistical
        data for attached upstream channels, appropriate as input for load
        usage calculations.
     
     
     3.2.  Relationship to the Interfaces MIB
     
        This section clarifies the relationship of this MIB to the
        Interfaces MIB [RFC2863]. Several areas of correlation are addressed
        in the following subsections.  The implementer is referred to the
        Interfaces MIB document in order to understand the general intent of
        these areas.
     
     3.2.1.  Layering Model
     
     
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        An instance of ifEntry exists for each RF Downstream interface, for
        each RF Upstream interface, for each Upstream logical Channel and
        for each RF MAC layer.
        The ifStackTable [RFC2863] MUST be implemented to identify
        relationships among sub-interfaces.
     
        The following example illustrates a CMTS MAC interface with one
        downstream and two upstream interfaces.
     
                                   | <== to network layer
             +------------------ --+-------------------------------+
             |                     RF MAC                          |
             +--+------------------+------------------------+------+
                |                  |                        |
        +-------+-----+     +------+------+          +------+------+
        | Downstream1 |     |  Upstream1  |          |  Upstream2  |
        |             |     |             |          |             |
        +-------------+     ++-----------++          ++-----------++
                             |           |            |           |
                        +----+----+ +----+----+  +----+----+ +----+----+
                        |  Ch-1   | |  Ch-2   |  |  Ch-1   | |  Ch-2   |
                        |(A/TDMA) | |(S-CDMA) |  |(A/TDMA) | |(S-CDMA) |
                        +---------+ +---------+  +---------+ +---------+
     
     
        As can be seen from this example, the RF MAC interface is layered on
        top of the downstream and upstream interfaces, and the RF Upstream
        interface is layered on top of an Upstream Logical Channels.
     
        In this example, the assignment of index values could be as follows:
     
        ifIndex       ifType                     Description
     
           2    docsCableMaclayer(127)           CATV MAC Layer
           3    docsCableDownstream(128)         CATV Downstream interface
           4    docsCableUpstream(129)           CATV Upstream interface
           5    docsCableUpstream(129)           CATV Upstream interface
           6    docsCableUpstreamChannel(205)    CATV Upstream Channel
           7    docsCableUpstreamChannel(205)    CATV Upstream Channel
           8    docsCableUpstreamChannel(205)    CATV Upstream Channel
           9    docsCableUpstreamChannel(205)    CATV Upstream Channel
     
     
           The corresponding ifStack entries would then be:
     
                | IfStackHigherLayer | ifStackLowerLayer |
                |         0          |         2         |
                |         2          |         3         |
                |         2          |         4         |
                |         2          |         5         |
                |         4          |         6         |
                |         4          |         7         |
     
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                |         5          |         8         |
                |         5          |         9         |
                |         3          |         0         |
                |         6          |         0         |
                |         7          |         0         |
                |         8          |         0         |
                |         9          |         0         |
     
        The same interface model can also be used in Telephony or Telco
        Return systems.  A pure Telco Return system (Cable Modem as well as
        Cable Modem Termination System) would not have upstream, but only
        downstream cable channels.  Systems supporting both Telco Return and
        cable upstream channels can use the above model without
        modification.
     
        Telco Return Upstream channel(s) are handled by the appropriate
        MIBs, such as PPP or Modem MIBs.
     
     3.2.2.  Virtual Circuits
     
        This medium does not support virtual circuits and this area is not
        applicable to this MIB.
     
     3.2.3.  ifTestTable
     
        The ifTestTable is optional for Docsis CM/CMTS implementations, but
        is not specifically influenced by the RF mib.
     
     3.2.4.  ifRcvAddressTable
     
        The ifRcvAddressTable is optional for Docsis CM/CMTS
        implementations, but is not specifically influenced by the RF mib.
     
     3.2.5.  ifEntry
     
        This section documents only the differences from the requirements
        specified in the Interfaces MIB.  See that MIB for columns omitted
        from the descriptions below.
     
     3.2.5.1.  ifEntry for Downstream interfaces
     
        The ifEntry for Downstream interfaces supports the
        ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
        MIB.  This is an output only interface at the CMTS and all input
        status counters - ifIn* - will return zero.  This is an input only
        interface at the CM and all output status counters - ifOut* - will
        return zero.
     
     3.2.5.1.1.  ifEntry for Downstream interfaces in Cable Modem
        Termination Systems
     
        ifTable           Comments
     
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        ==============    ===========================================
        ifIndex           Each RF Cable Downstream interface is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableDownstream(128).
     
        ifSpeed           Return the speed of this downstream channel.
                          The returned value is the raw bandwidth in bits/s
                          of this interface. This is the symbol rate
                          multiplied with the number of bits per symbol.
     
        ifHighSpeed       Return the speed of this downstream channel.
                          The returned value is the raw bandwidth in
                          megabits/s of this interface. This is the symbol
                          rate multiplied with the number of bits per
                          symbol.
     
        ifPhysAddress     Return an empty string.
     
        ifAdminStatus     The administrative status of this interface.
     
        ifOperStatus      The current operational status of this interface.
     
        ifMtu             The size of the largest frame which can be
                          sent on this interface, specified in octets.
                          The value includes the length of the MAC header.
     
        ifInOctets        Return zero.
        ifHCInOctets
     
        ifInUcastPkts     Return zero.
        ifHCInUcastPkts
     
        ifInMulticastPkts Return zero.
        ifHCInMulticastPkts
     
        ifInBroadcastPkts Return zero.
        ifHCInBroadcastPkts
     
        ifInDiscards      Return zero.
     
        ifInErrors        Return zero.
     
        ifInUnknownProtos Return zero.
     
        ifOutOctets       The total number of octets transmitted on this
        ifHCOutOctets     interface. This includes MAC packets as well as
                          data packets, and includes the length of the MAC
                          header.
     
        ifOutUcastPkts    The number of Unicast packets transmitted on this
        ifHCOutUcastPkts  interface. This includes MAC packets as well as
     
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                          data packets.
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return the number of Multicast packets transmitted
                          on this interface.
                          This includes MAC packets as well as data packets.
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return the number of broadcast packets transmitted
                          on this interface.
                          This includes MAC packets as well as data packets.
     
        ifOutDiscards     The total number of outbound packets which
                          were discarded. Possible reasons are:
                          buffer shortage.
     
        ifOutErrors       The number of packets which could not be
                          transmitted due to errors.
     
        ifPromiscuousMode Return false.
     
     3.2.5.1.2.  ifEntry for Downstream interfaces in Cable Modems
     
        ifTable           Comments
        ==============    ===========================================
        ifIndex           Each RF Cable Downstream interface is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableDownstream(128).
     
        ifSpeed           Return the speed of this downstream channel.
                          The returned value the raw bandwidth in bits/s
                          of this interface. This is the symbol rate
                          multiplied with the number of bits per symbol.
     
        ifHighSpeed       Return the speed of this downstream channel.
                          The returned value the raw bandwidth in megabits/s
                          of this interface. This is the symbol rate
                          multiplied with the number of bits per symbol.
     
        ifPhysAddress     Return an empty string.
     
        ifAdminStatus     The administrative status of this interface.
     
        ifOperStatus      The current operational status of this interface.
     
        ifMtu             The size of the largest frame which can be
                          received from this interface, specified in octets.
                          The value includes the length of the MAC header.
     
     
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        ifInOctets        The total number of octets received on this
        ifHCInOctets      interface. This includes data packets as well as
                          MAC packets, and includes the length of the
                          MAC header.
     
        ifInUcastPkts     The number of Unicast packets received on this
        ifHCInUcastPkts   interface. This includes data packets as well as
                          MAC packets.
     
        ifInMulticastPkts
        ifHCInMulticastPkts
                          Return the number of Multicast packets received
                          on this interface. This includes data packets as
                          well as MAC packets.
     
        ifInBroadcastPkts
        ifHCInBroadcastPkts
                          Return the number of Broadcast packets received
                          on this interface. This includes data packets
                          as well as MAC packets.
     
        ifInDiscards      The total number of received packets that have
                          been discarded.
                          The possible reasons are: buffer shortage.
     
        ifInErrors        The number of inbound packets that contained
                          errors preventing them from being deliverable
                          to higher layers.
                          Possible reasons are: MAC FCS error.
     
        ifInUnknownProtos The number of frames with an unknown packet type.
                          These are MAC frames with an unknown packet type.
     
        ifOutOctets       Return zero.
        ifHCOutOctets
     
        ifOutUcastPkts    Return zero.
        ifHCOutUcastPkts
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return zero.
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return zero.
     
        ifOutDiscards     Return zero.
     
        ifOutErrors       Return zero.
     
        ifPromiscuousMode Refer to the Interfaces MIB.
     
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     3.2.5.2.  ifEntry for Upstream interfaces
     
        Each supported interface of the type docsCableUpstream(129) must
        have a corresponding ifEntry.
        The ifEntry for Upstream interfaces supports the
        ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
        MIB.  This is an input only interface at the CMTS and all output
        status counters - ifOut* - will return zero.  This is an output only
        interface at the CM and all input status counters - ifIn* - will
        return zero.
     
     3.2.5.2.1.  ifEntry for Upstream interfaces in Cable Modem Termination
                 Systems
     
        ifTable           Comments
        ==============    ===========================================
        ifIndex           Each RF Cable Upstream interface is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableUpstream (129).
     
        ifSpeed           Return the maximum channel throughput (not payload
                          throughput) supported by the interface.
                          The maximum throughput is calculated for the case
                          where upstream channels are configured to maximize
                          interface throughput.
     
        ifHighSpeed       Return the maximum channel throughput (not payload
                          throughput) supported by the interface.
                          The maximum throughput is calculated for the case
                          where upstream channels are configured to maximize
                          interface throughput. Units for this object are
                          (1/1 000 000) * IfSpeed.
     
        ifPhysAddress     Return an empty string.
     
        ifAdminStatus     The administrative status of this interface.
                          This reflect the total status of all the channels
                          under this interface. So if at least one channel
                          has a physical connection this interface has
                          connection. Any SNMP SET on this interface will
                          cause a SET to all the channels under this
                          interface.
     
     
        ifOperStatus      The current operational status of this interface.
                          This reflects the total status of all the channels
                          under this interface. So if at least one channel
                          has a physical connection this interface has
                          connection.
     
     
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        ifMtu             The size of the largest frame which can be
                          transmitted on this interface, specified in
                          octets. The value includes the length of the MAC
                          header. This is the maximum of all the ifMtu of
                          all the channels under this interface.
     
        ifInOctets
        ifHCInOctets      The total (sum) number of octets received on all
                          the Upstream channels under this
                          interface. This includes data packets as well as
                          MAC packets, and includes the length of the
                          MAC header.
     
        ifInUcastPkts
        ifHCInUcastPkts   The total number of Unicast packets received on
                          all the upstream channels under this
                          interface. This includes data packets as well as
                          MAC packets.
     
        ifInMulticastPkts
        ifHCInMulticastPkts
                          Return the total number of Multicast packets
                          received on all the Upstream channels under this
                          interface. This includes data packets as well as
                          MAC layer packets.
     
        ifInBroadcastPkts
        ifHCInBroadcastPkts
                          Return the total number of Broadcast packets
                          received on all the Upstream channels under this
                          interface. This includes data packets as well as
                          MAC packets.
     
        ifInDiscards      The total number of received packets, which have
                          been discarded on all the Upstream channels under
                          this interface.
                          The possible reasons are: buffer shortage.
     
        ifInErrors        The total number of inbound packets that contained
                          errors preventing them from being deliverable
                          to higher layers.
                          Possible reasons are: MAC FCS error.
     
        ifInUnknownProtos The total number of frames with an unknown packet
                          type. These are MAC frames with an unknown packet
                          type.
     
        ifOutOctets       Return zero.
        ifHCOutOctets
     
        ifOutUcastPkts    Return zero.
     
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        ifHCOutOctets
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return zero.
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return zero.
     
        ifOutDiscards     Return zero.
     
        ifOutErrors       Return zero.
     
     3.2.5.2.2.  ifEntry for Upstream interfaces in Cable Modems
     
        ifTable           Comments
        ==============    ===========================================
        ifIndex           Each RF Cable Upstream interface is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableUpstream (129).
     
        ifSpeed           Return the speed of this upstream interface.
                          The returned value is the raw bandwidth
                          in bits/s of this interface.
     
        ifHighSpeed       Return the speed of this upstream interface.
                          The returned value is the raw bandwidth
                          in megabits/s of this interface.
     
     
        ifPhysAddress     Return an empty string.
     
        ifAdminStatus     The administrative status of this interface.
     
        ifOperStatus      The current operational status of this interface.
     
        ifMtu             The size of the largest frame which can be
                          transmitted on this interface, specified in
                          octets. The value includes the length of the MAC
                          header.
     
        ifInOctets        Return zero.
        ifHCInOctets
     
        ifInUcastPkts     Return zero.
        ifHCInUcastPkts
     
        ifInMulticastPkts Return zero.
        ifHCInMulticastPkts
     
     
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        ifInBroadcastPkts Return zero.
        ifHCInBroadcastPkts
     
        ifInDiscards      Return zero.
     
        ifInErrors        Return zero.
     
        ifInUnknownProtos Return zero.
     
        ifOutOctets       The total number of octets transmitted on this
        ifHCOutOctets     interface. This includes MAC packets as well as
                          data packets, and includes the length of the MAC
                          header.
     
        ifOutUcastPkts    The number of Unicast packets transmitted on this
        ifHCOutUcastPkts  interface. This includes MAC packets as well as
                          data packets.
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return the number of Multicast packets transmitted
                          on this interface.
                          This includes MAC packets as well as data packets.
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return the number of broadcast packets transmitted
                          on this interface.
                          This includes MAC packets as well as data packets.
     
        ifOutDiscards     The total number of outbound packets which
                          were discarded. Possible reasons are:
                          buffer shortage.
     
        ifOutErrors       The number of packets which could not be
                          transmitted due to errors.
     
        ifPromiscuousMode Return false.
     
     3.2.5.3.  ifEntry for Upstream channels
     
        Each supported channel of the type docsCableUpstreamChannel(205)
        must have a corresponding ifEntry.
     
        The ifEntry for Upstream channels supports the
        ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
        MIB.  This is an input only interface at the CMTS and all output
        status counters - ifOut* - will return zero. At the time of this mib
        creation, DOCSIS CMs are not required to support logical upstream
        channels.
     
     3.2.5.3.1.  ifEntry for Upstream Channels in Cable Modem Termination
     
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                 Systems
     
        ifTable           Comments
        ==============    ===========================================
        ifIndex           Each RF Cable Upstream channel is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableUpstreamChannel (205).
     
        ifSpeed           Return the speed of this upstream channel.
                          The returned value is the raw bandwidth
                          in bits/s of this channel.
     
        ifHighSpeed       Return the speed of this upstream channel.
                          The returned value is the raw bandwidth
                          in megabits/s of this channel.
     
     
        ifPhysAddress     Return an empty string.
     
        ifAdminStatus     The administrative status of this interface.
     
        ifOperStatus      The current operational status of this interface.
     
        ifMtu             The size of the largest frame which can be
                          received on this interface, specified in octets.
                          The value includes the length of the MAC header.
     
        ifInOctets        The total number of octets received on this
                          interface. This includes data packets as well as
                          MAC packets, and includes the length of the
                          MAC header.
     
        ifInUcastPkts     The number of Unicast packets received on this
        ifHCInUcastPkts   interface. This includes data packets as well as
                          MAC packets.
     
        ifInMulticastPkts
        ifHCInMulticastPkts
                          Return the number of Multicast packets received
                          on this interface. This includes data packets as
                          well as MAC layer packets.
     
        ifInBroadcastPkts
        ifHCInBroadcastPkts
                          Return the number of Broadcast packets received
                          on this interface. This includes data packets
                          as well as MAC packets.
     
        ifInDiscards      The total number of received packets that have
                          been discarded.
                          The possible reasons are: buffer shortage.
     
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        ifInErrors        The number of inbound packets that contained
                          errors preventing them from being deliverable
                          to higher layers.
                          Possible reasons are: MAC FCS error.
     
        ifInUnknownProtos The number of frames with an unknown packet type.
                          These are MAC frames with an unknown packet type.
     
        ifOutOctets       Return zero.
        ifHCOutOctets
     
        ifOutUcastPkts    Return zero.
        ifHCOutUcastPkts
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return zero.
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return zero.
     
        ifOutDiscards     Return zero.
     
        ifOutErrors       Return zero.
     
     3.2.5.4.  ifEntry for the MAC Layer
     
        The ifEntry for the MAC Layer supports the ifGeneralInformationGroup
        and the ifPacketGroup of the Interfaces MIB.  This interface
        provides an aggregate view of status for the lower level Downstream
        and Upstream interfaces.
     
        ifTable           Comments
        ==============    ===========================================
        ifIndex           Each RF Cable MAC layer entity is represented
                          by an ifEntry.
     
        ifType            The IANA value of docsCableMaclayer(127).
     
        ifSpeed           Return zero.
     
        ifPhysAddress     Return the physical address of this interface.
     
        ifAdminStatus     The administrative status of this interface.
     
        ifOperStatus      The current operational status of the MAC
                          layer interface.
     
        ifHighSpeed       Return zero.
     
     
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        ifMtu             Return 1500.
     
        ifInOctets        The total number of data octets received on this
        ifHCInOctets      interface, targeted for upper protocol layers.
     
        ifInUcastPkts     The number of Unicast packets received on this
        ifHCInUcastPkts   interface, targeted for upper protocol layers.
     
        ifInMulticastPkts
        ifHCInMulticastPkts
                          Return the number of Multicast packets received
                          on this interface, targeted for upper protocol
                          layers.
     
        ifInBroadcastPkts
        ifHCInBroadcastPkts
                          Return the number of Broadcast packets received
                          on this interface, targeted for upper protocol
                          layers.
     
        ifInDiscards      The total number of received packets that have
                          been discarded.
                          The possible reasons are: buffer shortage.
     
        ifInErrors        The number of inbound packets that contained
                          errors preventing them from being deliverable
                          to higher layers.
                          Possible reasons are: data packet FCS error,
                          invalid MAC header.
     
        ifInUnknownProtos The number of frames with an unknown packet type.
                          This is the number of data packets targeted for
                          upper protocol layers with an unknown packet type.
     
        ifOutOctets       The total number of octets, received from upper
        ifHCOutOctets     protocol layers and transmitted on this interface.
     
        ifOutUcastPkts    The number of Unicast packets, received from upper
        ifHCOutUcastPkts  protocol layers and transmitted on this interface.
     
        ifOutMulticastPkts
        ifHCOutMulticastPkts
                          Return the number of Multicast packets received
                          from upper protocol layers and transmitted on this
                          interface.
     
     
     
        ifOutBroadcastPkts
        ifHCOutBroadcastPkts
                          Return the number of broadcast packets received
                          from upper protocol layers and transmitted on this
     
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                          interface.
     
        ifOutDiscards     The total number of outbound packets which
                          were discarded. Possible reasons are:
                          buffer shortage.
     
        ifOutErrors       The number of packets which could not be
                          transmitted due to errors.
     
        ifPromiscuousMode Refer to the Interfaces MIB.
     
     
     4.  Definitions
     
     DOCS-IF-MIB DEFINITIONS ::= BEGIN
     
       IMPORTS
             MODULE-IDENTITY,
             OBJECT-TYPE,
       -- do not import        BITS,
             Unsigned32,
             Integer32,
             Counter32,
             Counter64,
             TimeTicks,
             IpAddress,
             transmission
                     FROM SNMPv2-SMI
             TEXTUAL-CONVENTION,
             MacAddress,
             RowStatus,
             TruthValue,
             TimeInterval,
             TimeStamp
                     FROM SNMPv2-TC
             OBJECT-GROUP,
     
             MODULE-COMPLIANCE
                     FROM SNMPv2-CONF
             ifIndex, InterfaceIndexOrZero
                     FROM IF-MIB
             InetAddressType,
             InetAddress
                     FROM INET-ADDRESS-MIB
             IANAifType
                     FROM IANAifType-MIB;
     
     docsIfMib MODULE-IDENTITY
             LAST-UPDATED    "200309100000Z" -- September 10, 2003
             ORGANIZATION    "IETF IPCDN Working Group"
             CONTACT-INFO
                 "        David Raftus
     
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                  Postal: Terayon Communications
                          340 Terry Fox Drive, Suite 202
                          Ottawa Ontario
                          Canada
                  Phone:  +1 613 592 1052 ext.222
                  E-mail: david.raftus@terayon.com
     
                  IETF IPCDN Working Group
                  General Discussion: ipcdn@ietf.org
                  Subscribe: http://www.ietf.org/mailman/listinfo/ipcdn
                  Archive: ftp://ftp.ietf.org/ietf-mail-archive/ipcdn
                  Co-chairs: Richard Woundy, Richard_Woundy@cable.comcast.com
                             Jean-Francois Mule, jf.mule@cablelabs.com"
             DESCRIPTION
                 "This is the MIB Module for DOCSIS 2.0 compliant Radio
                  Frequency (RF) interfaces in Cable Modems (CM) and
                  Cable Modem Termination Systems (CMTS)."
             REVISION "200309100000Z"
             DESCRIPTION
                 "pre-RFC draft v7:
                  Modified by David Raftus to return name to pre v6 title
                  DOCS-IF-MIB, to clarify descriptive wording of various
                  objects, tables and methodologies, to add new objects to
                  count UCC transactions, to add enumeration values to
                  docsIfCmtsModPreambleType and docsIfCmtsCmStatusValue, to
                  to add new object to indicate the last update time of
                  docsIfCmtsCmStatusValueLastUpdate, to update references to
                  the latest Docsis versions.
                  pre-RFC draft v6:
                  Modified by David Raftus to update references, boilerplate
                  to format suggested by IPCDN workgroup. Also clarified
                  descriptions of some objects, added size constraints to
                  selected objects to fix compiler warnings.
                  pre-RFC draft v5:
                  Modified by David Raftus to add channel utilization
                  related objects, upstream channel equalization related
                  objects, a cmts upstream minislot counter table, a cmts
                  downstream byte counter table, 64 bit versions of existing
                  32 bit docsIfSigQTable objects, and perform some editorial
                  adjustments.
                  pre-RFC draft v4:
                  Modified by David Raftus to fix docsIfUpChannelWidth range
                  in  compliance statements to accommodate 6.4Mhz channel at
                  5.12 Msymbol/sec. Also adjusted description of
                  docsIfUpChannelStatus to use correct rowStatus
                  terminology.
                  pre-RFC draft v3:
                  Modified by David Raftus to add new textual convention
                  describing upstream modulation status. Also clarified
                  some object descriptions, fixed error in
                  docsIfSignalQualityEntry, fixed upstreamTable compliance
                  statements.
     
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                  pre-RFC draft v2:
                  Modified by David Raftus to add capability to adjust
                  and verify upstream channel parameters as a group.
                  Also adjusted syntax and clarified descriptions of
                  selected objects.
                  pre-RFC draft v1:
                  Modified by Aviv Goren and David Raftus to accommodate
                  Docsis 2.0 Advanced Phy capabilities, as well as to
                  incorporate objects from the docsIfExt mib.
                  Modified by Rich Woundy to use IPv6-friendly
                  address objects, to accommodate EuroDOCSIS, and
                  to correct the SYNTAX of various objects."
             REVISION "199908190000Z"
             DESCRIPTION
                 "Initial Version, published as RFC 2670.
                  Modified by Mike StJohns to fix problems identified by
                  the first pass of the MIB doctor.  Of special note,
                  docsIfRangingResp and docsIfCmtsInsertionInterval were
                  obsoleted and replaced by other objects with the same
                  functionality, but more appropriate SYNTAX."
             ::= { transmission 127 }
     
     
     
     -- Textual Conventions
     
     TenthdBmV ::= TEXTUAL-CONVENTION
             DISPLAY-HINT "d-1"
             STATUS       current
             DESCRIPTION
                 "This data type represents power levels that are normally
                  expressed in dBmV. Units are in tenths of a dBmV;
                  for example, 5.1 dBmV will be represented as 51."
             SYNTAX       Integer32
     
     TenthdB ::= TEXTUAL-CONVENTION
             DISPLAY-HINT "d-1"
             STATUS       current
             DESCRIPTION
                 "This data type represents power levels that are normally
                  expressed in dB. Units are in tenths of a dB;
                  for example, 5.1 dB will be represented as 51."
             SYNTAX       Integer32
     
     DocsisVersion ::= TEXTUAL-CONVENTION
            STATUS          current
            DESCRIPTION     "Indicates the DOCSIS version number."
            SYNTAX          INTEGER {
                docsis10 (1),
                docsis11 (2),
                docsis20 (3)
            }
     
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     DocsisQosVersion ::= TEXTUAL-CONVENTION
            STATUS          current
            DESCRIPTION     "Indicates the quality of service level."
            SYNTAX          INTEGER {
                docsis10 (1),
                docsis11 (2)
            }
     
     DocsisUpstreamType ::= TEXTUAL-CONVENTION
            STATUS          current
            DESCRIPTION     "Indicates the DOCSIS Upstream Channel Type."
            SYNTAX          INTEGER {
                unknown (0),
                tdma (1),
                atdma (2),
                scdma (3),
                tdmaAndAtdma (4)
            }
     
     DocsisUpstreamTypeStatus ::= TEXTUAL-CONVENTION
            STATUS          current
            DESCRIPTION
                "Indicates the DOCSIS Upstream Channel Type Status.
                 The shared channel indicator type is not valid, since
                 this type is used to specifically identify PHY mode."
            SYNTAX          INTEGER {
                unknown (0),
                tdma (1),
                atdma (2),
                scdma (3)
            }
     
     
     docsIfMibObjects  OBJECT IDENTIFIER ::= { docsIfMib 1 }
     docsIfBaseObjects OBJECT IDENTIFIER ::= { docsIfMibObjects 1 }
     docsIfCmObjects   OBJECT IDENTIFIER ::= { docsIfMibObjects 2 }
     docsIfCmtsObjects OBJECT IDENTIFIER ::= { docsIfMibObjects 3 }
     
     --
     -- BASE GROUP
     --
     
     --
     -- The following table is implemented on both the Cable Modem (CM)
     -- and the Cable Modem Termination System (CMTS). This table is
     -- read only for the CM.
     --
     
     
     docsIfDownstreamChannelTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfDownstreamChannelEntry
     
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             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "This table describes the attributes of downstream
                  channels (frequency bands)."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-12 and Table 6-13."
             ::= { docsIfBaseObjects 1 }
     
     docsIfDownstreamChannelEntry OBJECT-TYPE
             SYNTAX      DocsIfDownstreamChannelEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "An entry provides a list of attributes for a single
                  Downstream channel.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableDownstream(128)."
             INDEX { ifIndex }
             ::= { docsIfDownstreamChannelTable 1 }
     
     DocsIfDownstreamChannelEntry ::= SEQUENCE {
                 docsIfDownChannelId               Integer32,
                 docsIfDownChannelFrequency        Integer32,
                 docsIfDownChannelWidth            Integer32,
                 docsIfDownChannelModulation       INTEGER,
                 docsIfDownChannelInterleave       INTEGER,
                 docsIfDownChannelPower            TenthdBmV,
                 docsIfDownChannelAnnex            INTEGER
             }
     
     docsIfDownChannelId OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The Cable Modem Termination System (CMTS) identification
                  of the downstream channel within this particular MAC
                  interface. If the interface is down, the object returns
                  the most current value. If the downstream channel ID is
                  unknown, this object returns a value of 0."
             ::= { docsIfDownstreamChannelEntry 1 }
     
     docsIfDownChannelFrequency  OBJECT-TYPE
             SYNTAX      Integer32 (0..1000000000)
             UNITS       "hertz"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The center of the downstream frequency associated with
     
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                  this channel. This object will return the current tuner
                  frequency. If a CMTS provides IF output, this object
                  will return 0, unless this CMTS is in control of the
                  final downstream RF frequency.  See the associated
                  compliance object for a description of valid frequencies
                  that may be written to this object."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Tables 4-1, 6-14."
             ::= { docsIfDownstreamChannelEntry 2 }
     
     docsIfDownChannelWidth  OBJECT-TYPE
             SYNTAX      Integer32 (0..16000000)
             UNITS       "hertz"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The bandwidth of this downstream channel. Most
                  implementations are expected to support a channel width
                  of 6 MHz (North America) and/or 8 MHz (Europe).  See the
                  associated compliance object for a description of the
                  valid channel widths for this object."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-14."
             ::= { docsIfDownstreamChannelEntry 3 }
     
     docsIfDownChannelModulation OBJECT-TYPE
             SYNTAX      INTEGER {
                 unknown(1),
                 other(2),
                 qam64(3),
                 qam256(4)
             }
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The modulation type associated with this downstream
                  channel. If the interface is down, this object either
                  returns the configured value (CMTS), the most current
                  value (CM), or the value of unknown(1).  See the
                  associated conformance object for write conditions and
                  limitations. See the reference for specifics on the
                  modulation profiles implied by qam64 and qam256."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-14."
             ::= { docsIfDownstreamChannelEntry 4 }
     
     
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     docsIfDownChannelInterleave OBJECT-TYPE
             SYNTAX      INTEGER {
                 unknown(1),
                 other(2),
                 taps8Increment16(3),
                 taps16Increment8(4),
                 taps32Increment4(5),
                 taps64Increment2(6),
                 taps128Increment1(7),
                 taps12increment17(8)
             }
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The Forward Error Correction (FEC) interleaving used
                  for this downstream channel.
                  Values are defined as follows:
                  taps8Increment16(3):   protection 5.9/4.1 usec,
                                         latency .22/.15 msec
                  taps16Increment8(4):   protection 12/8.2 usec,
                                         latency .48/.33 msec
                  taps32Increment4(5):   protection 24/16 usec,
                                         latency .98/.68 msec
                  taps64Increment2(6):   protection 47/33 usec,
                                         latency 2/1.4 msec
                  taps128Increment1(7):  protection 95/66 usec,
                                         latency 4/2.8 msec
                  taps12increment17(8):  protection 18/14 usec,
                                         latency 0.43/0.32 msec
                                         taps12increment17 is implemented in
                                         conformance with EuroDOCSIS
                                         document 'Adapted MIB-definitions -
                                         and a clarification for
                                         MPEG-related issues - for
                                         EuroDOCSIS cable modem systems' by
                                         tComLabs and should only be used
                                         for a EuroDOCSIS MAC interface.
     
                  If the interface is down, this object either returns
                  the configured value (CMTS), the most current value (CM),
                  or the value of unknown(1).
                  The value of other(2) is returned if the interleave
                  is known but not defined in the above list.
                  See the associated conformance object for write
                  conditions and limitations. See the reference for the FEC
                  configuration described by the setting of this object."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-13."
             ::= { docsIfDownstreamChannelEntry 5 }
     
     
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     docsIfDownChannelPower OBJECT-TYPE
             SYNTAX      TenthdBmV
             UNITS       "dBmV"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "At the CMTS, the operational transmit power. At the CM,
                  the received power level.
                  If the interface is down, this object either returns
                  the configured value (CMTS), the most current value (CM)
                  or the value of 0. See the associated conformance object
                  for write conditions and limitations. See the reference
                  for recommended and required power levels."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-15."
             ::= { docsIfDownstreamChannelEntry 6 }
     
     docsIfDownChannelAnnex OBJECT-TYPE
             SYNTAX      INTEGER {
                 unknown(1),
                 other(2),
                 annexA(3),
                 annexB(4),
                 annexC(5)
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The value of this object indicates the conformance of
                  the implementation to important regional cable standards.
                  annexA : Annex A from ITU-J83 is used.
                  annexB : Annex B from ITU-J83 is used.
                  annexC : Annex C from ITU-J83 is used.
                  AnnexB is used for DOCSIS implementations"
             REFERENCE
                 "Document Adapted MIB-definitions and a clarification for
                  MPEG-related issues for EuroDOCSIS cable modem systems
                  v1.01, tComLabs, May 2000, Section 2.2"
             ::= { docsIfDownstreamChannelEntry 7 }
     
     --
     -- The following table is implemented on both the CM and the CMTS.
     -- For the CM, only attached channels appear in the table.  For the
     -- CM, this table is read only as well.
     --
     
     docsIfUpstreamChannelTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfUpstreamChannelEntry
             MAX-ACCESS  not-accessible
             STATUS      current
     
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             DESCRIPTION
                 "This table describes the attributes of attached upstream
                  channels."
             ::= { docsIfBaseObjects 2 }
     
     docsIfUpstreamChannelEntry OBJECT-TYPE
             SYNTAX      DocsIfUpstreamChannelEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "List of attributes for a single upstream channel. For
                  Docsis 2.0 CMTSs, an entry in this table exists for
                  each ifEntry with an ifType of docsCableUpstreamChannel
                  (205).
                  For Docsis 1.x CM/CMTSs and Docsis 2.0 CMs, an entry in
                  this table exists for each ifEntry with an ifType of
                  docsCableUpstreamInterface (129)."
             INDEX { ifIndex }
             ::= { docsIfUpstreamChannelTable 1 }
     
     DocsIfUpstreamChannelEntry ::= SEQUENCE {
                 docsIfUpChannelId                     Integer32,
                 docsIfUpChannelFrequency              Integer32,
                 docsIfUpChannelWidth                  Integer32,
                 docsIfUpChannelModulationProfile      Unsigned32,
                 docsIfUpChannelSlotSize               Unsigned32,
                 docsIfUpChannelTxTimingOffset         Unsigned32,
                 docsIfUpChannelRangingBackoffStart    Integer32,
                 docsIfUpChannelRangingBackoffEnd      Integer32,
                 docsIfUpChannelTxBackoffStart         Integer32,
                 docsIfUpChannelTxBackoffEnd           Integer32,
                 docsIfUpChannelScdmaActiveCodes       Unsigned32,
                 docsIfUpChannelScdmaCodesPerSlot      Integer32,
                 docsIfUpChannelScdmaFrameSize         Unsigned32,
                 docsIfUpChannelScdmaHoppingSeed       Unsigned32,
                 docsIfUpChannelType                   DocsisUpstreamType,
                 docsIfUpChannelCloneFrom              InterfaceIndexOrZero,
                 docsIfUpChannelUpdate                 TruthValue,
                 docsIfUpChannelStatus                 RowStatus,
                 docsIfUpChannelPreEqEnable            TruthValue
             }
     
     docsIfUpChannelId OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The CMTS identification of the upstream channel."
             ::= { docsIfUpstreamChannelEntry 1 }
     
     docsIfUpChannelFrequency OBJECT-TYPE
             SYNTAX      Integer32 (0..1000000000)
     
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             UNITS       "hertz"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The center of the frequency band associated with this
                  upstream interface. This object returns 0 if the frequency
                  is undefined or unknown. Minimum permitted upstream
                  frequency is 5,000,000 Hz for current technology.  See
                  the associated conformance object for write conditions
                  and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 4-2."
             ::= { docsIfUpstreamChannelEntry 2 }
     
     docsIfUpChannelWidth OBJECT-TYPE
             SYNTAX      Integer32 (0..64000000)
             UNITS       "hertz"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The bandwidth of this upstream interface. This object
                  returns 0 if the interface width is undefined or unknown.
                  Minimum permitted interface width is 200,000 Hz currently.
                  See the associated conformance object for write conditions
                  and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-12."
             ::= { docsIfUpstreamChannelEntry 3 }
     
     
     docsIfUpChannelModulationProfile OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "An entry identical to the docsIfModIndex in the
                  docsIfCmtsModulationTable that describes this channel.
                  This channel is further instantiated there by a grouping
                  of interval usage codes which together fully describe the
                  channel modulation. This object returns 0 if the
                  docsIfCmtsModulationTable entry does not exist or
                  docsIfCmtsModulationTable is empty. See
                  the associated conformance object for write conditions
                  and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
     
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             ::= { docsIfUpstreamChannelEntry 4 }
     
     docsIfUpChannelSlotSize OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applicable to TDMA and ATDMA channel types only.
                  The number of 6.25 microsecond ticks in each upstream
                  mini-slot. Returns zero if the value is undefined, unknown
                  or in case of an SCDMA channel.
                  See the associated conformance object for write
                  conditions and limitations. "
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.1.2.4."
             ::= { docsIfUpstreamChannelEntry 5 }
     
     docsIfUpChannelTxTimingOffset OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CM, a measure of the current round trip time
                  obtained from the ranging offset (initial ranging offset +
                  ranging offset adjustments).
                  At the CMTS, the maximum of timing offset, among all the
                  CMs that are/were present on the channel, taking into
                  account all ( initial + periodic ) timing offset
                  corrections that were sent for each of the CMs. Generally,
                  these measurements are positive, but if the measurements
                  are negative, the value of this object is zero. Used for
                  timing of CM upstream transmissions to ensure synchronized
                  arrivals at the CMTS.
                  Units are in terms of (6.25 microseconds/64)."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.18."
             ::= { docsIfUpstreamChannelEntry 6 }
     
     docsIfUpChannelRangingBackoffStart OBJECT-TYPE
             SYNTAX      Integer32 (0..16)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The initial random backoff window to use when retrying
                  Ranging Requests. Expressed as a power of 2. A value of 16
                  at the CMTS indicates that a proprietary adaptive retry
                  mechanism is to be used. See the associated conformance
                  object for write conditions and limitations."
     
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             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.4."
             ::= { docsIfUpstreamChannelEntry 7 }
     
     docsIfUpChannelRangingBackoffEnd OBJECT-TYPE
             SYNTAX      Integer32 (0..16)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The final random backoff window to use when retrying
                  Ranging Requests. Expressed as a power of 2. A value of 16
                  at the CMTS indicates that a proprietary adaptive retry
                  mechanism is to be used. See the associated conformance
                  object for write conditions and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.4."
             ::= { docsIfUpstreamChannelEntry 8 }
     
     docsIfUpChannelTxBackoffStart OBJECT-TYPE
             SYNTAX      Integer32 (0..16)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The initial random backoff window to use when retrying
                  transmissions. Expressed as a power of 2. A value of 16
                  at the CMTS indicates that a proprietary adaptive retry
                  mechanism is to be used. See the associated conformance
                  object for write conditions and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.4."
             ::= { docsIfUpstreamChannelEntry 9 }
     
     docsIfUpChannelTxBackoffEnd OBJECT-TYPE
             SYNTAX      Integer32 (0..16)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The final random backoff window to use when retrying
                  transmissions. Expressed as a power of 2. A value of 16
                  at the CMTS indicates that a proprietary adaptive retry
                  mechanism is to be used. See the associated conformance
                  object for write conditions and limitations."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.4."
     
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             ::= { docsIfUpstreamChannelEntry 10 }
     
     docsIfUpChannelScdmaActiveCodes  OBJECT-TYPE
             SYNTAX     Unsigned32 (0 | 64..128)
             MAX-ACCESS read-create
             STATUS     current
             DESCRIPTION
                 "Applicable for SCDMA channel types only.
                  Number of active codes. Returns zero for
                  Non-SCDMA channel types. Note that legal
                  values from 64..128 MUST be non-prime."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.11.2.1."
             ::= { docsIfUpstreamChannelEntry 11 }
     
     docsIfUpChannelScdmaCodesPerSlot OBJECT-TYPE
             SYNTAX      Integer32(0 | 2..32)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applicable for SCDMA channel types only.
                  The number of SCDMA codes per mini-slot.
                  Returns zero if the value is undefined, unknown or in
                  case of a TDMA or ATDMA channel."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.11.2.1."
             ::= { docsIfUpstreamChannelEntry 12 }
     
     docsIfUpChannelScdmaFrameSize OBJECT-TYPE
             SYNTAX      Unsigned32 (0..32)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applicable for SCDMA channel types only.
                  SCDMA Frame size in units of spreading intervals.
                  This value returns zero for non SCDMA Profiles."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.12."
             ::= { docsIfUpstreamChannelEntry 13 }
     
     docsIfUpChannelScdmaHoppingSeed OBJECT-TYPE
             SYNTAX     Unsigned32 (0..32767)
             MAX-ACCESS read-create
             STATUS     current
             DESCRIPTION
                 "Applicable for SCDMA channel types only.
     
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                  15 bit seed used for code hopping sequence initialization.
                  Returns zero for non-SCDMA channel types."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.14.1."
             ::= { docsIfUpstreamChannelEntry 14 }
     
     docsIfUpChannelType OBJECT-TYPE
             SYNTAX      DocsisUpstreamType
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Defines the Upstream channel type.
                  Given the channel type, other channel attributes can be
                  checked for value validity at the time of entry creation
                  and update."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.1."
             ::= { docsIfUpstreamChannelEntry 15 }
     
     docsIfUpChannelCloneFrom OBJECT-TYPE
             SYNTAX      InterfaceIndexOrZero
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Intended for use when a temporary inactive upstream table
                  row is created for the purpose of manipulating parameters
                  for an active row. Refer to the descriptions of
                  docsIfUpChannelStatus and docsIfUpChannelUpdate for
                  details of this procedure. This object contains the
                  ifIndex value of the active upstream row whose parameters
                  are to be adjusted.
                  Although this object was created to facilitate SCDMA
                  parameter adjustment, it may also be used at the vendor's
                  discretion for non-SCDMA parameter adjustment.
                  This object must contain a value of zero for active
                  upstream rows."
             ::= { docsIfUpstreamChannelEntry 16 }
     
     docsIfUpChannelUpdate OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Used to perform the transfer of adjusted SCDMA parameters
                  from the temporary upstream row to the active upstream row
                  indicated by the docsIfUpChannelCloneFrom object. The
                  transfer is initiated through an SNMP SET of TRUE to this
                  object. The SNMP SET will fail with a GEN_ERROR (snmpv1)
     
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                  or COMMIT_FAILED_ERROR (snmpv2c/v3) if the adjusted
                  SCDMA parameter values are not compatible with each other.
                  Although this object was created to facilitate SCDMA
                  parameter adjustment, it may also be used at the vendor's
                  discretion for non-SCDMA parameter adjustment.
                  An SNMP GET of this object always returns FALSE."
             ::= { docsIfUpstreamChannelEntry 17 }
     
     
     docsIfUpChannelStatus OBJECT-TYPE
             SYNTAX      RowStatus
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "This object is generally intended to be used for the
                  creation of a temporary inactive upstream row for the
                  purpose of adjusting channel parameters of an active
                  upstream row.
                  The recommended procedure is:
                  1) Create an inactive row through an SNMP SET using
                     createAndWait(5). Use an ifIndex value outside the
                     operational range of the system.
                  2) Set the docsIfUpChannelCloneFrom field to the ifIndex
                     value of the active row whose parameters require
                     adjustment.
                  3) Adjust the parameter values using the new
                     temporary inactive row. Ensure all parameters contain
                     desired values before proceeding to step 4.
                  4) Update the active row by setting object
                     docsIfUpChannelUpdate to TRUE. This SET will fail if
                     the adjusted parameters are not compatible with
                     each other.
                  5) Delete the temporary row through an SNMP SET using
                     DELETE.
     
                  The following restrictions apply to this object:
                  1) This object must contain a value of active(1) for
                     active rows.
                  2) Temporary inactive rows must be created using
                     createAndWait(5).
                  3) The only possible status change of a row created using
                     createAndWait(5) (ie notInService(2)) is to destroy(6).
                     These temporary rows must never become active.
                  4) A status transition from active (1) to destroy (6) is
                     not permitted. Entries with docsIfUpChannelStatus set
                     to active(1) are logically linked to a physical
                     interface, not temporarily created to clone parameters.
                     The Interface MIB [RFC2863] ifAdminStatus should be
                     used to take an Upstream Channel offline.
     
                  Although this object was created to facilitate SCDMA
                  parameter adjustment, it may also be used at the vendor's
     
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                  discretion for non-SCDMA parameter adjustment."
             ::= { docsIfUpstreamChannelEntry 18 }
     
     
     docsIfUpChannelPreEqEnable OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "At the CMTS, used to enable or disable pre-equalization on
                  the upstream channel represented by this table instance.
                  At the CM, this object is read-only and reflects the
                  status of pre-equalization as represented in the RNG-RSP.
                  Pre-equalization is considered enabled at the CM if a
                  RNG-RSP with pre-equalization data has been received at
                  least once since the last mac reinit."
             ::= { docsIfUpstreamChannelEntry 19 }
     
     
     
     
     -- The following table describes the attributes of each class of
     -- service.  The entries in this table are referenced from the
     -- docsIfServiceEntries.  They exist as a separate table in order to
     -- reduce redundant information in docsIfServiceTable.
     --
     -- This table is implemented at both the CM and the CMTS.
     -- The CM need only maintain entries for the classes of service
     -- referenced by its docsIfServiceTable.
     --
     
     docsIfQosProfileTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfQosProfileEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes for each class of service."
             ::= { docsIfBaseObjects 3 }
     
     docsIfQosProfileEntry OBJECT-TYPE
             SYNTAX      DocsIfQosProfileEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes for a single class of service.
     
                  If implemented as read-create in the Cable Modem
                  Termination System, creation of entries in this table is
                  controlled by the value of
                  docsIfCmtsQosProfilePermissions.
     
                  If implemented as read-only, entries are created based
     
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                  on information in REG-REQ MAC messages received from
                  Cable Modems (Cable Modem Termination System
                  implementation), or based on information extracted from
                  the TFTP option file (Cable Modem implementation).
                  In the Cable Modem Termination system, read-only entries
                  are removed if no longer referenced by
                  docsIfCmtsServiceTable.
     
                  An entry in this table must not be removed while it is
                  referenced by an entry in docsIfCmServiceTable (Cable
                  Modem) or docsIfCmtsServiceTable (Cable Modem Termination
                  System).
     
                  An entry in this table should not be changeable while
                  it is referenced by an entry in docsIfCmtsServiceTable.
     
                  If this table is created automatically, there should only
                  be a single entry for each Class of Service. Multiple
                  entries with the same Class of Service parameters are not
                  recommended."
             INDEX { docsIfQosProfIndex }
             ::= { docsIfQosProfileTable 1 }
     
     DocsIfQosProfileEntry ::= SEQUENCE {
                 docsIfQosProfIndex                Integer32,
                 docsIfQosProfPriority             Integer32,
                 docsIfQosProfMaxUpBandwidth       Integer32,
                 docsIfQosProfGuarUpBandwidth      Integer32,
                 docsIfQosProfMaxDownBandwidth     Integer32,
                 docsIfQosProfMaxTxBurst           Integer32,  -- Deprecated
                 docsIfQosProfBaselinePrivacy      TruthValue,
                 docsIfQosProfStatus               RowStatus,
                 docsIfQosProfMaxTransmitBurst     Integer32
             }
     
     docsIfQosProfIndex OBJECT-TYPE
             SYNTAX      Integer32 (1..16383)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "The index value that uniquely identifies an entry
                  in the docsIfQosProfileTable."
             ::= { docsIfQosProfileEntry 1 }
     
     docsIfQosProfPriority  OBJECT-TYPE
             SYNTAX      Integer32 (0..7)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "A relative priority assigned to this service when
                  allocating bandwidth. Zero indicates lowest priority
                  and seven indicates highest priority.
     
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                  Interpretation of priority is device-specific.
                  MUST NOT be changed while this row is active."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Appendix C.1.1.4."
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 2 }
     
     docsIfQosProfMaxUpBandwidth OBJECT-TYPE
             SYNTAX      Integer32 (0..100000000)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The maximum upstream bandwidth, in bits per second,
                  allowed for a service with this service class.
                  Zero if there is no restriction of upstream bandwidth.
                  MUST NOT be changed while this row is active."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Appendix C.1.1.4."
     
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 3 }
     
     docsIfQosProfGuarUpBandwidth OBJECT-TYPE
             SYNTAX      Integer32 (0..100000000)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Minimum guaranteed upstream bandwidth, in bits per second,
                  allowed for a service with this service class.
                  MUST NOT be changed while this row is active."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Appendix C.1.1.4."
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 4 }
     
     docsIfQosProfMaxDownBandwidth OBJECT-TYPE
             SYNTAX      Integer32 (0..100000000)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The maximum downstream bandwidth, in bits per second,
                  allowed for a service with this service class.
                  Zero if there is no restriction of downstream bandwidth.
                  MUST NOT be changed while this row is active."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
     
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                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Appendix C.1.1.4."
     
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 5 }
     
     docsIfQosProfMaxTxBurst OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-create
             STATUS      deprecated
             DESCRIPTION
                 "The maximum number of mini-slots that may be requested
                  for a single upstream transmission.
                  A value of zero means there is no limit.
                  MUST NOT be changed while this row is active.
                  This object has been deprecated and replaced by
                  docsIfQosProfMaxTransmitBurst, to fix a mismatch
                  of the units and value range with respect to the DOCSIS
                  Maximum Upstream Channel Transmit Burst Configuration
                  Setting."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  C.1.1.4."
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 6 }
     
     docsIfQosProfBaselinePrivacy  OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Indicates whether Baseline Privacy is enabled for this
                  service class.
                  MUST NOT be changed while this row is active."
             DEFVAL { false }
             ::= { docsIfQosProfileEntry 7 }
     
     docsIfQosProfStatus OBJECT-TYPE
             SYNTAX      RowStatus
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "This is object is to used to create or delete rows in
                  this table.  This object MUST NOT be changed from active
                  while the row is referenced by the any entry in either
                  docsIfCmServiceTable (on the CM), or the
                  docsIfCmtsServiceTable (on the CMTS)."
             ::= { docsIfQosProfileEntry 8 }
     
     docsIfQosProfMaxTransmitBurst OBJECT-TYPE
             SYNTAX      Integer32 (0..65535)
     
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             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The maximum number of bytes that may be requested for a
                  single upstream transmission. A value of zero means there
                  is no limit. Note: This value does not include any
                  physical layer overhead.
                  MUST NOT be changed while this row is active."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Appendix C.1.1.4."
             DEFVAL { 0 }
             ::= { docsIfQosProfileEntry 9 }
     
     docsIfSignalQualityTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfSignalQualityEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "At the CM, describes the PHY signal quality of downstream
                  channels. At the CMTS, describes the PHY signal quality of
                  upstream channels. At the CMTS, this table may exclude
                  contention intervals."
             ::= { docsIfBaseObjects 4 }
     
     docsIfSignalQualityEntry OBJECT-TYPE
             SYNTAX      DocsIfSignalQualityEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "At the CM, describes the PHY characteristics of a
                  downstream channel. At the CMTS, describes the PHY signal
                  quality of an upstream channel.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableDownstream(128) for Cable Modems.
                  For Docsis 1.1 Cable Modem Termination Systems, an entry
                  exists for each ifEntry with an ifType of
                  docsCableUpstream (129).
                  For Docsis 2.0 Cable Modem Termination Systems, an entry
                  exists for each ifEntry with an ifType of
                  docsCableUpstreamChannel (205)."
             INDEX { ifIndex }
             ::= { docsIfSignalQualityTable 1 }
     
     DocsIfSignalQualityEntry ::= SEQUENCE {
                 docsIfSigQIncludesContention  TruthValue,
                 docsIfSigQUnerroreds          Counter32,
                 docsIfSigQCorrecteds          Counter32,
                 docsIfSigQUncorrectables      Counter32,
                 docsIfSigQSignalNoise         TenthdB,
                 docsIfSigQMicroreflections    Integer32,
     
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                 docsIfSigQEqualizationData    OCTET STRING,
                 docsIfSigQExtUnerroreds       Counter64,
                 docsIfSigQExtCorrecteds       Counter64,
                 docsIfSigQExtUncorrectables   Counter64
             }
     
     docsIfSigQIncludesContention OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "true(1) if this CMTS includes contention intervals in
                  the counters in this table. Always false(2) for CMs."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4.1"
             ::= { docsIfSignalQualityEntry 1 }
     
     docsIfSigQUnerroreds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel without error.
                  This includes all codewords, whether or not they
                  were part of frames destined for this device.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 2 }
     
     docsIfSigQCorrecteds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel with correctable
                  errors. This includes all codewords, whether or not
                  they were part of frames destined for this device.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
     
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                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 3 }
     
     docsIfSigQUncorrectables OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel with uncorrectable
                  errors. This includes all codewords, whether or not
                  they were part of frames destined for this device.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 4 }
     
     docsIfSigQSignalNoise OBJECT-TYPE
             SYNTAX      TenthdB
             UNITS       "dB"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Signal/Noise ratio as perceived for this channel.
                  At the CM, describes the Signal/Noise of the downstream
                  channel.  At the CMTS, describes the average Signal/Noise
                  of the upstream channel."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Tables 4-1 and 4-2"
             ::= { docsIfSignalQualityEntry 5 }
     
     docsIfSigQMicroreflections OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             UNITS       "dBc"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total microreflections including in-channel response
                  as perceived on this interface, measured in dBc below
                  the signal level.
                  This object is not assumed to return an absolutely
                  accurate value, but should give a rough indication
                  of microreflections received on this interface.
                  It is up to the implementer to provide information
                  as accurate as possible.
                  Discontinuities in the value of this counter can occur
     
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                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Tables 4-1 and 4-2"
             ::= { docsIfSignalQualityEntry 6 }
     
     docsIfSigQEqualizationData OBJECT-TYPE
             SYNTAX      OCTET STRING (SIZE (0..512))
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CM, returns the equalization data for the
                  downstream channel. At the CMTS, returns the average
                  equalization data for the upstream channel. Returns an
                  empty string if the value is unknown or if there is no
                  equalization data available or defined."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.3.2."
             ::= { docsIfSignalQualityEntry 7 }
     
     docsIfSigQExtUnerroreds OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel without error.
                  This includes all codewords, whether or not they
                  were part of frames destined for this device.
                  This is the 64 bit version of docsIfSigQUnerroreds.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 8 }
     
     docsIfSigQExtCorrecteds OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel with correctable
                  errors. This includes all codewords, whether or not
                  they were part of frames destined for this device.
     
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                  This is the 64 bit version of docsIfSigQCorrecteds.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 9 }
     
     docsIfSigQExtUncorrectables OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received on this channel with uncorrectable
                  errors. This includes all codewords, whether or not
                  they were part of frames destined for this device.
                  This is the 64 bit version of docsIfSigQUncorrectables.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfSignalQualityEntry 10 }
     
     
     --
     -- DOCSIS Version of the device
     --
     
     docsIfDocsisBaseCapability  OBJECT-TYPE
                SYNTAX      DocsisVersion
                MAX-ACCESS  read-only
                STATUS      current
                DESCRIPTION
                     "Indication of the DOCSIS capability of the device.
                      This object mirrors docsIfDocsisCapability from the
                      DocsIfExt mib."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Annex G."
                ::= { docsIfBaseObjects 5 }
     
     
     --
     -- CABLE MODEM GROUP
     
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     --
     
     -- #######
     
     
     --
     -- The CM MAC Table
     --
     
     docsIfCmMacTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmMacEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of each CM MAC interface,
                  extending the information available from ifEntry."
             ::= { docsIfCmObjects 1 }
     
     docsIfCmMacEntry OBJECT-TYPE
             SYNTAX      DocsIfCmMacEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "An entry containing objects describing attributes of
                  each MAC entry, extending the information in ifEntry.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableMaclayer(127)."
             INDEX { ifIndex }
             ::= { docsIfCmMacTable 1 }
     
     DocsIfCmMacEntry ::= SEQUENCE {
                 docsIfCmCmtsAddress           MacAddress,
                 docsIfCmCapabilities          BITS,
                 docsIfCmRangingRespTimeout    TimeTicks,
                 docsIfCmRangingTimeout        TimeInterval
              }
     
     docsIfCmCmtsAddress OBJECT-TYPE
             SYNTAX      MacAddress
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Identifies the CMTS that is believed to control this MAC
                  domain. At the CM, this will be the source address from
                  SYNC, MAP, and other MAC-layer messages. If the CMTS is
                  unknown, returns 00-00-00-00-00-00."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.2.2."
             ::= { docsIfCmMacEntry 1 }
     
     
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     docsIfCmCapabilities OBJECT-TYPE
             SYNTAX      BITS {
                 atmCells(0),
                 concatenation(1)
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Identifies the capabilities of the MAC implementation
                  at this interface. Note that packet transmission is
                  always supported. Therefore, there is no specific bit
                  required to explicitly indicate this capability.
                  Note that BITS objects are encoded most significant bit
                  first. For example, if bit 1 is set, the value of this
                  object is the octet string '40'H."
             ::= { docsIfCmMacEntry 2 }
     
     
     -- This object has been obsoleted and replaced by
     -- docsIfCmRangingTimeout to correct the typing to TimeInterval. New
     -- implementations of the MIB should use docsIfCmRangingTimeout
     -- instead.
     
     docsIfCmRangingRespTimeout OBJECT-TYPE
             SYNTAX      TimeTicks
             MAX-ACCESS  read-write
             STATUS      obsolete
             DESCRIPTION
                 "Waiting time for a Ranging Response packet."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.1.6."
             DEFVAL { 20 }
             ::= { docsIfCmMacEntry 3 }
     
     docsIfCmRangingTimeout OBJECT-TYPE
             SYNTAX      TimeInterval
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "Waiting time for a Ranging Response packet."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.1.6, timer T3."
             DEFVAL { 20 }
             ::= { docsIfCmMacEntry 4 }
     
     --
     -- CM status table.
     -- This table is implemented only at the CM.
     
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     --
     
     docsIfCmStatusTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmStatusEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "This table maintains a number of status objects
                  and counters for Cable Modems."
             ::= { docsIfCmObjects 2 }
     
     docsIfCmStatusEntry OBJECT-TYPE
             SYNTAX      DocsIfCmStatusEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "A set of status objects and counters for a single MAC
                  layer instance in a Cable Modem.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableMaclayer(127)."
             INDEX { ifIndex }
             ::= { docsIfCmStatusTable 1 }
     
     DocsIfCmStatusEntry ::= SEQUENCE {
                 docsIfCmStatusValue               INTEGER,
                 docsIfCmStatusCode                OCTET STRING,
                 docsIfCmStatusTxPower             TenthdBmV,
                 docsIfCmStatusResets              Counter32,
                 docsIfCmStatusLostSyncs           Counter32,
                 docsIfCmStatusInvalidMaps         Counter32,
                 docsIfCmStatusInvalidUcds         Counter32,
                 docsIfCmStatusInvalidRangingResponses   Counter32,
                 docsIfCmStatusInvalidRegistrationResponses Counter32,
                 docsIfCmStatusT1Timeouts          Counter32,
                 docsIfCmStatusT2Timeouts          Counter32,
                 docsIfCmStatusT3Timeouts          Counter32,
                 docsIfCmStatusT4Timeouts          Counter32,
                 docsIfCmStatusRangingAborteds     Counter32,
                 docsIfCmStatusDocsisOperMode      DocsisQosVersion,
                 docsIfCmStatusModulationType      DocsisUpstreamTypeStatus,
                 docsIfCmStatusEqualizationData    OCTET STRING,
                 docsIfCmStatusUCCs                Counter32,
                 docsIfCmStatusUCCFails            Counter32
             }
     
     
     docsIfCmStatusValue OBJECT-TYPE
             SYNTAX      INTEGER {
                 other(1),
                 notReady(2),
                 notSynchronized(3),
                 phySynchronized(4),
     
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                 usParametersAcquired(5),
                 rangingComplete(6),
                 ipComplete(7),
                 todEstablished(8),
                 securityEstablished(9),
                 paramTransferComplete(10),
                 registrationComplete(11),
                 operational(12),
                 accessDenied(13)
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current Cable Modem connectivity state, as specified
                  in the RF Interface Specification. Interpretations for
                  state values 1-12 are clearly outlined in the SP-RFI
                  reference given below.
                  As stated in the description for object
                  docsIfCmtsCmStatusValue, accessDenied(13)indicates the
                  CMTS has sent a Registration Aborted message to the CM."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 11.2.
                  Data-Over-Cable Service Interface Specifications:
                  Operations Support System Interface Specification
                  SP-OSSIv2.0-IO4-030730, Section 6.3.4.2."
             ::= { docsIfCmStatusEntry 1 }
     
     docsIfCmStatusCode OBJECT-TYPE
             SYNTAX      OCTET STRING (SIZE (0..16))
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Status code for this Cable Modem as defined in the
                  OSSI Specification. The status code consists
                  of a single character indicating error groups, followed
                  by a two- or three-digit number indicating the status
                  condition, followed by a decimal."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications:
                  Operations Support System Interface Specification
                  SP-OSSIv2.0-I04-030730, Annex D."
             ::= { docsIfCmStatusEntry 2 }
     
     docsIfCmStatusTxPower OBJECT-TYPE
             SYNTAX      TenthdBmV
             UNITS       "dBmV"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The operational transmit power for the attached upstream
     
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                  channel."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.18."
             ::= { docsIfCmStatusEntry 3 }
     
     docsIfCmStatusResets OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM reset or initialized this
                  interface."
             ::= { docsIfCmStatusEntry 4 }
     
     docsIfCmStatusLostSyncs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM lost synchronization with
                  the downstream channel.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.2."
             ::= { docsIfCmStatusEntry 5 }
     
     
     docsIfCmStatusInvalidMaps OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM received invalid MAP messages.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.4."
             ::= { docsIfCmStatusEntry 6 }
     
     docsIfCmStatusInvalidUcds OBJECT-TYPE
             SYNTAX      Counter32
     
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             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM received invalid UCD messages.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.3."
             ::= { docsIfCmStatusEntry 7 }
     
     docsIfCmStatusInvalidRangingResponses OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM received invalid ranging response
                  messages.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.6."
             ::= { docsIfCmStatusEntry 8 }
     
     docsIfCmStatusInvalidRegistrationResponses OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the CM received invalid registration
                  response messages.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.8."
             ::= { docsIfCmStatusEntry 9 }
     
     docsIfCmStatusT1Timeouts OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
     
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             DESCRIPTION
                 "Number of times counter T1 expired in the CM.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 9-2."
             ::= { docsIfCmStatusEntry 10 }
     
     docsIfCmStatusT2Timeouts OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times counter T2 expired in the CM.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 9-2."
             ::= { docsIfCmStatusEntry 11 }
     
     docsIfCmStatusT3Timeouts OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times counter T3 expired in the CM.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 9-2."
             ::= { docsIfCmStatusEntry 12 }
     
     docsIfCmStatusT4Timeouts OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times counter T4 expired in the CM.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
     
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                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 9-2."
             ::= { docsIfCmStatusEntry 13 }
     
     docsIfCmStatusRangingAborteds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of times the ranging process was aborted
                  by the CMTS.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.3.3."
             ::= { docsIfCmStatusEntry 14 }
     
     docsIfCmStatusDocsisOperMode OBJECT-TYPE
             SYNTAX      DocsisQosVersion
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                  "Indication whether the device has registered using 1.0
                   Class of Service or 1.1 Quality of Service.
                   An unregistered CM should indicate 1.1 QOS for a
                   docsIfDocsisBaseCapability value of Docsis 1.1/2.0. An
                   unregistered CM should indicate 1.0 COS for a
                   docsIfDocsisBaseCapability value of Docsis 1.0.
                   This object mirrors docsIfCmDocsisOperMode from the
                   docsIfExt mib."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Annex G."
             ::= { docsIfCmStatusEntry 15 }
     
     docsIfCmStatusModulationType OBJECT-TYPE
              SYNTAX      DocsisUpstreamTypeStatus
              MAX-ACCESS  read-only
              STATUS      current
              DESCRIPTION
                  "Indicates modulation type status currently used by the
                   CM. Since this object specifically identifies PHY mode,
                   the shared upstream channel type is not permitted."
     
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             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.1."
     
              ::= { docsIfCmStatusEntry 16 }
     
     docsIfCmStatusEqualizationData OBJECT-TYPE
             SYNTAX      OCTET STRING (SIZE (0..512))
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Pre-equalization data for this CM after convolution with
                  data indicated in the RNG-RSP. This data is valid when
                  docsIfUpChannelPreEqEnable is set to true. The
                  value should be formatted as defined in the following
                  REFERENCE, beginning with the main tap location field.
                  The type and length fields shown in the referenced figure
                  must not be included.
                  Returns an empty string if the value is unknown or if
                  there is no equalization data available or defined."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 8-23."
             ::= { docsIfCmStatusEntry 17 }
     
     docsIfCmStatusUCCs OBJECT-TYPE
             SYNTAX          Counter32
             MAX-ACCESS      read-only
             STATUS          current
             DESCRIPTION
                 "The number of successful Upstream Channel Change
                  transactions.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmStatusEntry 18 }
     
     
     docsIfCmStatusUCCFails OBJECT-TYPE
             SYNTAX          Counter32
             MAX-ACCESS      read-only
             STATUS          current
             DESCRIPTION
                 "The number of failed Upstream Channel Change
                  transactions.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
     
     
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                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmStatusEntry 19 }
     
     
     
     
     --
     -- The Cable Modem Service Table
     --
     
     docsIfCmServiceTable  OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmServiceEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of each upstream service queue
                  on a CM."
             ::= { docsIfCmObjects 3 }
     
     docsIfCmServiceEntry OBJECT-TYPE
             SYNTAX      DocsIfCmServiceEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of an upstream bandwidth service
                  queue.
                  An entry in this table exists for each Service ID.
                  The primary index is an ifIndex with an ifType of
                  docsCableMaclayer(127)."
             INDEX { ifIndex, docsIfCmServiceId }
             ::= { docsIfCmServiceTable 1 }
     
     DocsIfCmServiceEntry ::= SEQUENCE {
                 docsIfCmServiceId               Integer32,
                 docsIfCmServiceQosProfile       Integer32,
                 docsIfCmServiceTxSlotsImmed     Counter32,
                 docsIfCmServiceTxSlotsDed       Counter32,
                 docsIfCmServiceTxRetries        Counter32,
                 docsIfCmServiceTxExceededs      Counter32,
                 docsIfCmServiceRqRetries        Counter32,
                 docsIfCmServiceRqExceededs      Counter32,
                 docsIfCmServiceExtTxSlotsImmed  Counter64,
                 docsIfCmServiceExtTxSlotsDed    Counter64
              }
     
     docsIfCmServiceId OBJECT-TYPE
             SYNTAX      Integer32 (1..16383)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Identifies a service queue for upstream bandwidth. The
                  attributes of this service queue are shared between the
     
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                  CM and the CMTS. The CMTS allocates upstream bandwidth
                  to this service queue based on requests from the CM and
                  on the class of service associated with this queue."
             ::= { docsIfCmServiceEntry 1 }
     
     docsIfCmServiceQosProfile OBJECT-TYPE
             SYNTAX      Integer32 (0..16383)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The index in docsIfQosProfileTable describing the quality
                  of service attributes associated with this particular
                  service. If no associated entry in docsIfQosProfileTable
                  exists, this object returns a value of zero."
             ::= { docsIfCmServiceEntry 2 }
     
     docsIfCmServiceTxSlotsImmed OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of upstream mini-slots which have been used to
                  transmit data PDUs in immediate (contention) mode. This
                  includes only those PDUs that are presumed to have
                  arrived at the headend (i.e., those which were explicitly
                  acknowledged.) It does not include retransmission attempts
                  or mini-slots used by Requests.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 3 }
     
     docsIfCmServiceTxSlotsDed OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of upstream mini-slots which have been used to
                  transmit data PDUs in dedicated mode (i.e., as a result
                  of a unicast Data Grant).
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
     
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                  Section 9.4."
             ::= { docsIfCmServiceEntry 4 }
     
     docsIfCmServiceTxRetries OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of attempts to transmit data PDUs containing
                  requests for acknowledgment that did not result in
                  acknowledgment.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 5 }
     
     docsIfCmServiceTxExceededs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of data PDUs transmission failures due to
                  excessive retries without acknowledgment.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 6 }
     
     docsIfCmServiceRqRetries OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of attempts to transmit bandwidth requests
                  which did not result in acknowledgment.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
     
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                  Section 9.4."
             ::= { docsIfCmServiceEntry 7 }
     
     
     docsIfCmServiceRqExceededs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of requests for bandwidth which failed due to
                  excessive retries without acknowledgment.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 8 }
     
     docsIfCmServiceExtTxSlotsImmed OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of upstream mini-slots which have been used to
                  transmit data PDUs in immediate (contention) mode. This
                  includes only those PDUs that are presumed to have
                  arrived at the headend (i.e., those which were explicitly
                  acknowledged.) It does not include retransmission attempts
                  or mini-slots used by Requests.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 9 }
     
     docsIfCmServiceExtTxSlotsDed OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of upstream mini-slots which have been used to
                  transmit data PDUs in dedicated mode (i.e., as a result
                  of a unicast Data Grant).
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
     
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                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.4."
             ::= { docsIfCmServiceEntry 10 }
     
     
     
     --
     -- CMTS GROUP
     --
     
     --
     -- The CMTS MAC Table
     --
     
     docsIfCmtsMacTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsMacEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of each CMTS MAC interface,
                  extending the information available from ifEntry.
                  Mandatory for all CMTS devices."
             ::= { docsIfCmtsObjects 1 }
     
     docsIfCmtsMacEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsMacEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "An entry containing objects describing attributes of each
                  MAC entry, extending the information in ifEntry.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableMaclayer(127)."
             INDEX { ifIndex }
             ::= { docsIfCmtsMacTable 1 }
     
     DocsIfCmtsMacEntry ::= SEQUENCE {
                 docsIfCmtsCapabilities            BITS,
                 docsIfCmtsSyncInterval            Integer32,
                 docsIfCmtsUcdInterval             Integer32,
                 docsIfCmtsMaxServiceIds           Integer32,
                 docsIfCmtsInsertionInterval       TimeTicks,   -- Obsolete
                 docsIfCmtsInvitedRangingAttempts  Integer32,
                 docsIfCmtsInsertInterval          TimeInterval
             }
     
     
     docsIfCmtsCapabilities OBJECT-TYPE
     
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             SYNTAX      BITS {
                 atmCells(0),
                 concatenation(1)
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Identifies the capabilities of the CMTS MAC
                  implementation at this interface. Note that packet
                  transmission is always supported. Therefore, there
                  is no specific bit required to explicitly indicate
                  this capability.
                  Note that BITS objects are encoded most significant bit
                  first. For example, if bit 1 is set, the value of this
                  object is the octet string '40'H."
             ::= { docsIfCmtsMacEntry 1 }
     
     docsIfCmtsSyncInterval OBJECT-TYPE
             SYNTAX      Integer32 (1..200)
             UNITS       "Milliseconds"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The interval between CMTS transmission of successive SYNC
                  messages at this interface."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.3."
             ::= { docsIfCmtsMacEntry 2 }
     
     docsIfCmtsUcdInterval OBJECT-TYPE
             SYNTAX      Integer32 (1..2000)
             UNITS       "Milliseconds"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The interval between CMTS transmission of successive
                  Upstream Channel Descriptor messages for each upstream
                  channel at this interface."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.3"
             ::= { docsIfCmtsMacEntry 3 }
     
     docsIfCmtsMaxServiceIds OBJECT-TYPE
             SYNTAX     Integer32 (1..16383)
             MAX-ACCESS read-only
             STATUS     current
             DESCRIPTION
                 "The maximum number of service IDs that may be
     
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                  simultaneously active."
             ::= { docsIfCmtsMacEntry 4 }
     
     -- This object has been obsoleted and replaced by
     -- docsIfCmtsInsertInterval to fix a SYNTAX typing problem.  New
     -- implementations of this MIB should use that object instead.
     docsIfCmtsInsertionInterval OBJECT-TYPE
             SYNTAX      TimeTicks
             MAX-ACCESS  read-write
             STATUS      obsolete
             DESCRIPTION
                 "The amount of time to elapse between each broadcast
                  initial maintenance grant. Broadcast initial maintenance
                  grants are used to allow new cable modems to join the
                  network. Zero indicates that a vendor-specific algorithm
                  is used instead of a fixed time. Maximum amount of time
                  permitted by the specification is 2 seconds."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Annex B."
             ::= { docsIfCmtsMacEntry 5 }
     
     docsIfCmtsInvitedRangingAttempts OBJECT-TYPE
             SYNTAX      Integer32 (0..1024)
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The maximum number of attempts to make on invitations
                  for ranging requests. A value of zero means the system
                  should attempt to range forever."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 9.3.3 and Annex B."
             ::= { docsIfCmtsMacEntry 6 }
     
     docsIfCmtsInsertInterval OBJECT-TYPE
             SYNTAX      TimeInterval
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The amount of time to elapse between each broadcast
                  initial maintenance grant. Broadcast initial maintenance
                  grants are used to allow new cable modems to join the
                  network. Zero indicates that a vendor-specific algorithm
                  is used instead of a fixed time. Maximum amount of time
                  permitted by the specification is 2 seconds."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Annex B."
     
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             ::= { docsIfCmtsMacEntry 7 }
     
     
     --
     --
     -- CMTS status table.
     --
     
     docsIfCmtsStatusTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsStatusEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "For the MAC layer, this group maintains a number of
                  status objects and counters."
             ::= { docsIfCmtsObjects 2 }
     
     docsIfCmtsStatusEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsStatusEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                "Status entry for a single MAC layer.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableMaclayer(127)."
             INDEX { ifIndex }
             ::= { docsIfCmtsStatusTable 1 }
     
     DocsIfCmtsStatusEntry ::= SEQUENCE {
                 docsIfCmtsStatusInvalidRangeReqs        Counter32,
                 docsIfCmtsStatusRangingAborteds         Counter32,
                 docsIfCmtsStatusInvalidRegReqs          Counter32,
                 docsIfCmtsStatusFailedRegReqs           Counter32,
                 docsIfCmtsStatusInvalidDataReqs         Counter32,
                 docsIfCmtsStatusT5Timeouts              Counter32
             }
     
     docsIfCmtsStatusInvalidRangeReqs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts invalid RNG-REQ messages received on
                  this interface.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.5."
     
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             ::= { docsIfCmtsStatusEntry 1 }
     
     docsIfCmtsStatusRangingAborteds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts ranging attempts that were explicitly
                  aborted by the CMTS.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.6."
             ::= { docsIfCmtsStatusEntry 2 }
     
     docsIfCmtsStatusInvalidRegReqs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts invalid REG-REQ messages received on
                  this interface. That is, syntax, out of range parameters,
                  or erroneous requests.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.7."
             ::= { docsIfCmtsStatusEntry 3 }
     
     docsIfCmtsStatusFailedRegReqs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts failed registration attempts. Included
                  are docsIfCmtsStatusInvalidRegReqs, authentication and
                  class of service failures.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
     
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                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.3.7."
             ::= { docsIfCmtsStatusEntry 4 }
     
     docsIfCmtsStatusInvalidDataReqs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts invalid data request messages
                  received on this interface.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsStatusEntry 5 }
     
     docsIfCmtsStatusT5Timeouts OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "This object counts the number of times counter T5
                  expired on this interface.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 9-2."
             ::= { docsIfCmtsStatusEntry 6 }
     
     
     --
     -- CM status table (within CMTS).
     -- This table is implemented only at the CMTS.
     -- It contains per CM status information available in the CMTS.
     --
     
     docsIfCmtsCmStatusTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsCmStatusEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "A set of objects in the CMTS, maintained for each
                  Cable Modem connected to this CMTS."
             ::= { docsIfCmtsObjects 3 }
     
     docsIfCmtsCmStatusEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsCmStatusEntry
     
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             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Status information for a single Cable Modem.
                  An entry in this table exists for each Cable Modem
                  that is connected to the CMTS implementing this table."
             INDEX { docsIfCmtsCmStatusIndex }
             ::= { docsIfCmtsCmStatusTable 1 }
     
     DocsIfCmtsCmStatusEntry ::= SEQUENCE {
                 docsIfCmtsCmStatusIndex               Integer32,
                 docsIfCmtsCmStatusMacAddress          MacAddress,
                 docsIfCmtsCmStatusIpAddress       IpAddress,  -- Deprecated
                 docsIfCmtsCmStatusDownChannelIfIndex  InterfaceIndexOrZero,
                 docsIfCmtsCmStatusUpChannelIfIndex    InterfaceIndexOrZero,
                 docsIfCmtsCmStatusRxPower             TenthdBmV,
                 docsIfCmtsCmStatusTimingOffset        Unsigned32,
                 docsIfCmtsCmStatusEqualizationData    OCTET STRING,
                 docsIfCmtsCmStatusValue               INTEGER,
                 docsIfCmtsCmStatusUnerroreds          Counter32,
                 docsIfCmtsCmStatusCorrecteds          Counter32,
                 docsIfCmtsCmStatusUncorrectables      Counter32,
                 docsIfCmtsCmStatusSignalNoise         TenthdB,
                 docsIfCmtsCmStatusMicroreflections    Integer32,
                 docsIfCmtsCmStatusExtUnerroreds       Counter64,
                 docsIfCmtsCmStatusExtCorrecteds       Counter64,
                 docsIfCmtsCmStatusExtUncorrectables   Counter64,
                 docsIfCmtsCmStatusDocsisRegMode       DocsisQosVersion,
                 docsIfCmtsCmStatusModulationType  DocsisUpstreamTypeStatus,
                 docsIfCmtsCmStatusInetAddressType     InetAddressType,
                 docsIfCmtsCmStatusInetAddress         InetAddress,
                 docsIfCmtsCmStatusValueLastUpdate     TimeStamp,
                 docsIfCmtsCmStatusHighResolutionTimingOffset Unsigned32
             }
     
     docsIfCmtsCmStatusIndex OBJECT-TYPE
             SYNTAX      Integer32 (1..2147483647)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Index value to uniquely identify an entry in this table.
                  For an individual Cable Modem, this index value should
                  not change during CMTS uptime."
             ::= { docsIfCmtsCmStatusEntry 1 }
     
     docsIfCmtsCmStatusMacAddress OBJECT-TYPE
             SYNTAX      MacAddress
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "MAC address of this Cable Modem. If the Cable Modem has
                  multiple MAC addresses, this is the MAC address associated
     
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                  with the Cable interface."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 8.2.2."
             ::= { docsIfCmtsCmStatusEntry 2 }
     
     docsIfCmtsCmStatusIpAddress OBJECT-TYPE
             SYNTAX      IpAddress
             MAX-ACCESS  read-only
             STATUS      deprecated
             DESCRIPTION
                 "IP address of this Cable Modem. If the Cable Modem has no
                  IP address assigned, or the IP address is unknown, this
                  object returns a value of 0.0.0.0. If the Cable Modem has
                  multiple IP addresses, this object returns the IP address
                  associated with the Cable interface.
                  This object has been deprecated and replaced by
                  docsIfCmtsCmStatusInetAddressType and
                  docsIfCmtsCmStatusInetAddress, to enable IPv6 addressing
                  in the future."
             ::= { docsIfCmtsCmStatusEntry 3 }
     
     docsIfCmtsCmStatusDownChannelIfIndex OBJECT-TYPE
             SYNTAX      InterfaceIndexOrZero
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "IfIndex of the downstream channel this CM is connected
                  to. If the downstream channel is unknown, this object
                  returns a value of zero."
             ::= { docsIfCmtsCmStatusEntry 4 }
     
     docsIfCmtsCmStatusUpChannelIfIndex OBJECT-TYPE
             SYNTAX      InterfaceIndexOrZero
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "IfIndex of the upstream channel this CM is connected
                  to. If the upstream channel is unknown, this object
                  returns a value of zero."
             ::= { docsIfCmtsCmStatusEntry 5 }
     
     docsIfCmtsCmStatusRxPower OBJECT-TYPE
             SYNTAX      TenthdBmV
             UNITS       "dBmV"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The receive power as perceived for upstream data from
                  this Cable Modem.
                  If the receive power is unknown, this object returns
     
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                  a value of zero."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 6-11."
             ::= { docsIfCmtsCmStatusEntry 6 }
     
     docsIfCmtsCmStatusTimingOffset OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "A measure of the current round trip time for this CM.
                  Used for timing of CM upstream transmissions to ensure
                  synchronized arrivals at the CMTS. Units are in terms
                  of (6.25 microseconds/64). Returns zero if the value
                  is unknown.
                  For channels requiring finer resolution, please refer to
                  object docsIfCmtsCmStatusHighResolutionTimingOffset."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.17."
             ::= { docsIfCmtsCmStatusEntry 7 }
     
     docsIfCmtsCmStatusEqualizationData OBJECT-TYPE
             SYNTAX      OCTET STRING (SIZE (0..512))
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Equalization data for this CM. Returns an empty string
                  if the value is unknown or if there is no equalization
                  data available or defined."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Figure 8-23."
             ::= { docsIfCmtsCmStatusEntry 8 }
     
     docsIfCmtsCmStatusValue OBJECT-TYPE
             SYNTAX      INTEGER {
                 other(1),
                 ranging(2),
                 rangingAborted(3),
                 rangingComplete(4),
                 ipComplete(5),
                 registrationComplete(6),
                 accessDenied(7),
                 operational(8), -- deprecated
                 registeredBPIInitializing(9)
             }
             MAX-ACCESS  read-only
     
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             STATUS      current
             DESCRIPTION
                 "Current Cable Modem connectivity state, as specified
                  in the RF Interface Specification. Returned status
                  information is the CM status as assumed by the CMTS,
                  and indicates the following events:
                  other(1)
                     Any state other than below.
                  ranging(2)
                     The CMTS has received an Initial Ranging Request
                     message from the CM, and the ranging process is not
                     yet complete.
                  rangingAborted(3)
                     The CMTS has sent a Ranging Abort message to the CM.
                  rangingComplete(4)
                     The CMTS has sent a Ranging Complete message to the CM.
                  ipComplete(5)
                     The CMTS has received a DHCP reply message and
                     forwarded it to the CM.
                  registrationComplete(6)
                     The CMTS has sent a Registration Response message to
                     the CM.
                  accessDenied(7)
                     The CMTS has sent a Registration Aborted message
                     to the CM.
                  operational(8) -- deprecated value
                     This value has been deprecated in favor of the more
                     Specific registeredBPIInitializing(9).
                  registeredBPIInitializing(9)
                     Baseline Privacy (BPI) is enabled and the CMTS is in the
                     process of completing BPI initialization. This state may
                     last for a significant length of time if failures occur
                     during the initialization process. After completion of
                     BPI initialization, the CMTS will report
                     registrationComplete(6).
                  The CMTS only needs to report states it is able to
                  detect."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 11.2."
             ::= { docsIfCmtsCmStatusEntry 9 }
     
     docsIfCmtsCmStatusUnerroreds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received without error from this Cable Modem.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
     
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                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 10 }
     
     docsIfCmtsCmStatusCorrecteds OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received with correctable errors from this
                  Cable Modem.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 11 }
     
     docsIfCmtsCmStatusUncorrectables OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received with uncorrectable errors from this
                  Cable Modem.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 12 }
     
     docsIfCmtsCmStatusSignalNoise OBJECT-TYPE
             SYNTAX      TenthdB
             UNITS       "dB"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Signal/Noise ratio as perceived for upstream data from
                  this Cable Modem.
                  If the Signal/Noise is unknown, this object returns
                  a value of zero."
             REFERENCE
     
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                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Tables 4-1 and 4-2."
             ::= { docsIfCmtsCmStatusEntry 13 }
     
     docsIfCmtsCmStatusMicroreflections OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             UNITS       "dBc"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total microreflections including in-channel response
                  as perceived on this interface, measured in dBc below
                  the signal level.
                  This object is not assumed to return an absolutely
                  accurate value, but should give a rough indication
                  of microreflections received on this interface.
                  It is up to the implementer to provide information
                  as accurate as possible.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Tables 4-1 and 4-2"
             ::= { docsIfCmtsCmStatusEntry 14 }
     
     docsIfCmtsCmStatusExtUnerroreds OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received without error from this Cable Modem.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 15 }
     
     docsIfCmtsCmStatusExtCorrecteds OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received with correctable errors from this
                  Cable Modem.
     
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                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 16 }
     
     docsIfCmtsCmStatusExtUncorrectables OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Codewords received with uncorrectable errors from this
                  Cable Modem.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.5."
             ::= { docsIfCmtsCmStatusEntry 17 }
     
     docsIfCmtsCmStatusDocsisRegMode OBJECT-TYPE
                SYNTAX      DocsisQosVersion
                MAX-ACCESS  read-only
                STATUS      current
                DESCRIPTION
                    " Indication whether the CM has registered using 1.0
                      Class of Service or 1.1 Quality of Service.
                      This object mirrors docsIfCmtsCmStatusDocsisMode from
                      the docsIfExt mib."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Annex G."
             ::= { docsIfCmtsCmStatusEntry 18 }
     
     docsIfCmtsCmStatusModulationType OBJECT-TYPE
              SYNTAX      DocsisUpstreamTypeStatus
              MAX-ACCESS  read-only
              STATUS      current
              DESCRIPTION
                  "Indicates modulation type currently used by the CM. Since
                   this object specifically identifies PHY mode, the shared
                   type is not permitted. If the upstream channel is
                   unknown, this object returns a value of zero."
             REFERENCE
     
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                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
              ::= { docsIfCmtsCmStatusEntry 19 }
     
     docsIfCmtsCmStatusInetAddressType OBJECT-TYPE
                SYNTAX      InetAddressType
                MAX-ACCESS  read-only
                STATUS      current
                DESCRIPTION
                    "The type of internet address of
                     docsIfCmtsCmStatusInetAddress. If the cable modem
                     Internet address is unassigned or unknown, then the
                     value of this object is unknown(0)."
                ::= { docsIfCmtsCmStatusEntry 20 }
     
     docsIfCmtsCmStatusInetAddress OBJECT-TYPE
                SYNTAX      InetAddress
                MAX-ACCESS  read-only
                STATUS      current
                DESCRIPTION
                    "Internet address of this Cable Modem. If the Cable
                     Modem has no Internet address assigned, or the Internet
                     address is unknown, the value of this object is the
                     empty string. If the Cable Modem has multiple Internet
                     addresses, this object returns the Internet address
                     associated with the Cable (i.e. RF MAC) interface."
                ::= { docsIfCmtsCmStatusEntry 21 }
     
     docsIfCmtsCmStatusValueLastUpdate OBJECT-TYPE
                SYNTAX      TimeStamp
                MAX-ACCESS  read-only
                STATUS      current
                DESCRIPTION
                    "The value of sysUpTime when docsIfCmtsCmStatusValue
                     was last updated."
                ::= { docsIfCmtsCmStatusEntry 22 }
     
     docsIfCmtsCmStatusHighResolutionTimingOffset OBJECT-TYPE
             SYNTAX      Unsigned32 (0..4294967295)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "A measure of the current round trip time for this CM.
                  Used for timing of CM upstream transmissions to ensure
                  synchronized arrivals at the CMTS. Units are in terms
                  of (6.25 microseconds/(64*256)). Returns zero if the value
                  is unknown.
                  This is the high resolution version of object
                  docsIfCmtsCmStatusTimingOffset, for channels requiring
                  finer resolution."
             REFERENCE
     
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                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Section 6.2.17."
             ::= { docsIfCmtsCmStatusEntry 23 }
     
     
     --
     -- The CMTS Service Table.
     --
     
     docsIfCmtsServiceTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsServiceEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of upstream service queues
                  in a Cable Modem Termination System."
             ::= { docsIfCmtsObjects 4 }
     
     docsIfCmtsServiceEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsServiceEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes the attributes of a single upstream bandwidth
                  service queue.
                  Entries in this table exist for each ifEntry with an
                  ifType of docsCableMaclayer(127), and for each service
                  queue (Service ID) within this MAC layer.
                  Entries in this table are created with the creation of
                  individual Service IDs by the MAC layer and removed
                  when a Service ID is removed."
             INDEX { ifIndex, docsIfCmtsServiceId }
             ::= { docsIfCmtsServiceTable 1 }
     
     DocsIfCmtsServiceEntry ::= SEQUENCE {
                 docsIfCmtsServiceId               Integer32,
                 docsIfCmtsServiceCmStatusIndex    Integer32,  -- Deprecated
                 docsIfCmtsServiceAdminStatus      INTEGER,
                 docsIfCmtsServiceQosProfile       Integer32,
                 docsIfCmtsServiceCreateTime       TimeStamp,
                 docsIfCmtsServiceInOctets         Counter32,
                 docsIfCmtsServiceInPackets        Counter32,
                 docsIfCmtsServiceNewCmStatusIndex Integer32
             }
     
     docsIfCmtsServiceId OBJECT-TYPE
             SYNTAX      Integer32 (1..16383)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Identifies a service queue for upstream bandwidth. The
     
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                  attributes of this service queue are shared between the
                  Cable Modem and the Cable Modem Termination System.
                  The CMTS allocates upstream bandwidth to this service
                  queue based on requests from the CM and on the class of
                  service associated with this queue."
             ::= { docsIfCmtsServiceEntry 1 }
     
     docsIfCmtsServiceCmStatusIndex OBJECT-TYPE
             SYNTAX      Integer32 (0..65535)
             MAX-ACCESS  read-only
             STATUS      deprecated
             DESCRIPTION
                 "Pointer to an entry in docsIfCmtsCmStatusTable identifying
                  the Cable Modem using this Service Queue. If multiple
                  Cable Modems are using this Service Queue, the value of
                  this object is zero.
                  This object has been deprecated and replaced by
                  docsIfCmtsServiceNewCmStatusIndex, to fix a mismatch
                  of the value range with respect to docsIfCmtsCmStatusIndex
                  (1..2147483647)."
             ::= { docsIfCmtsServiceEntry 2 }
     
     docsIfCmtsServiceAdminStatus OBJECT-TYPE
             SYNTAX      INTEGER {
                 enabled(1),
                 disabled(2),
                 destroyed(3) }
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "Allows a service class for a particular modem to be
                  suppressed, (re-)enabled, or deleted altogether."
             ::= { docsIfCmtsServiceEntry 3 }
     
     docsIfCmtsServiceQosProfile OBJECT-TYPE
             SYNTAX      Integer32 (0..16383)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The index in docsIfQosProfileTable describing the quality
                  of service attributes associated with this particular
                  service. If no associated docsIfQosProfileTable entry
                  exists, this object returns a value of zero."
             ::= { docsIfCmtsServiceEntry 4 }
     
     docsIfCmtsServiceCreateTime OBJECT-TYPE
     
             SYNTAX      TimeStamp
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The value of sysUpTime when this entry was created."
     
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             ::= { docsIfCmtsServiceEntry 5 }
     
     docsIfCmtsServiceInOctets OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The cumulative number of Packet Data octets received
                  on this Service ID. The count does not include the
                  size of the Cable MAC header.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsServiceEntry 6 }
     
     docsIfCmtsServiceInPackets OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The cumulative number of Packet Data packets received
                  on this Service ID.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsServiceEntry 7 }
     
     docsIfCmtsServiceNewCmStatusIndex OBJECT-TYPE
             SYNTAX      Integer32 (0..2147483647)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Pointer (via docsIfCmtsCmStatusIndex) to an entry in
                  docsIfCmtsCmStatusTable identifying the Cable Modem
                  using this Service Queue. If multiple Cable Modems are
                  using this Service Queue, the value of this object is
                  zero."
             ::= { docsIfCmtsServiceEntry 8 }
     
     --
     -- The following table provides upstream channel modulation profiles.
     -- Entries in this table can be
     -- re-used by one or more upstream channels. An upstream channel will
     -- have a modulation profile
     -- for each value of docsIfModIntervalUsageCode.
     --
     
     
     docsIfCmtsModulationTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsModulationEntry
     
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             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes a modulation profile associated with one or more
                  upstream channels."
             ::= { docsIfCmtsObjects 5 }
     
     docsIfCmtsModulationEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsModulationEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Describes a modulation profile for an Interval Usage Code
                  for one or more upstream channels.
                  Entries in this table are created by the operator. Initial
                  default entries may be created at system initialization
                  time. No individual objects have to be specified in order
                  to create an entry in this table.
                  Note that some objects do not have DEFVALs, but do have
                  calculated defaults and need not be specified during row
                  creation.
                  There is no restriction on the changing of values in this
                  table while their associated rows are active."
             INDEX { docsIfCmtsModIndex, docsIfCmtsModIntervalUsageCode}
             ::= { docsIfCmtsModulationTable 1 }
     
     DocsIfCmtsModulationEntry ::= SEQUENCE {
                 docsIfCmtsModIndex                    Integer32,
                 docsIfCmtsModIntervalUsageCode        INTEGER,
                 docsIfCmtsModControl                  RowStatus,
                 docsIfCmtsModType                     INTEGER,
                 docsIfCmtsModPreambleLen              Integer32,
                 docsIfCmtsModDifferentialEncoding     TruthValue,
                 docsIfCmtsModFECErrorCorrection       Integer32,
                 docsIfCmtsModFECCodewordLength        Integer32,
                 docsIfCmtsModScramblerSeed            Integer32,
                 docsIfCmtsModMaxBurstSize             Integer32,
                 docsIfCmtsModGuardTimeSize            Unsigned32,
                 docsIfCmtsModLastCodewordShortened    TruthValue,
                 docsIfCmtsModScrambler                TruthValue,
                 docsIfCmtsModByteInterleaverDepth     Unsigned32,
                 docsIfCmtsModByteInterleaverBlockSize Unsigned32,
                 docsIfCmtsModPreambleType             INTEGER,
                 docsIfCmtsModTcmErrorCorrectionOn     TruthValue,
                 docsIfCmtsModScdmaInterleaverStepSize Unsigned32,
                 docsIfCmtsModScdmaSpreaderEnable      TruthValue,
                 docsIfCmtsModScdmaSubframeCodes       Unsigned32,
                 docsIfCmtsModChannelType              DocsisUpstreamType
             }
     
     docsIfCmtsModIndex OBJECT-TYPE
             SYNTAX       Integer32 (1..2147483647)
     
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             MAX-ACCESS   not-accessible
             STATUS      current
             DESCRIPTION
                  "An index into the Channel Modulation table representing
                   a group of Interval Usage Codes, all associated with the
                   same channel."
             ::= { docsIfCmtsModulationEntry 1 }
     
     docsIfCmtsModIntervalUsageCode OBJECT-TYPE
             SYNTAX       INTEGER {
                 request(1),
                 requestData(2),
                 initialRanging(3),
                 periodicRanging(4),
                 shortData(5),
                 longData(6),
                 advPhyShortData(9),
                 advPhyLongData(10),
                 ugs(11)
             }
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "An index into the Channel Modulation table which, when
                  grouped with other Interval Usage Codes, fully
                  instantiate all modulation sets for a given upstream
                  channel."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-20."
             ::= { docsIfCmtsModulationEntry 2 }
     
     docsIfCmtsModControl OBJECT-TYPE
             SYNTAX      RowStatus
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Controls and reflects the status of rows in this table."
             ::= { docsIfCmtsModulationEntry 3 }
     
     docsIfCmtsModType  OBJECT-TYPE
             SYNTAX      INTEGER {
                 other(1),
                 qpsk(2),
                 qam16(3),
                 qam8(4),
                 qam32(5),
                 qam64(6),
                 qam128(7)
             }
             MAX-ACCESS  read-create
     
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             STATUS      current
             DESCRIPTION
                 "The modulation type used on this channel. Returns
                  other(1) if the modulation type is neither
                  qpsk, qam16, qam8, qam32, qam64 or qam128.
                  Type qam128 is used for SCDMA channels only.
                  See the reference for the modulation profiles
                  implied by different modulation types."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { qpsk }
             ::= { docsIfCmtsModulationEntry 4 }
     
     docsIfCmtsModPreambleLen OBJECT-TYPE
             SYNTAX      Integer32 (0..1536)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The preamble length for this modulation profile in bits.
                  Default value is the minimum needed by the implementation
                  at the CMTS for the given modulation profile."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             ::= { docsIfCmtsModulationEntry 5 }
     
     docsIfCmtsModDifferentialEncoding OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Specifies whether or not differential encoding is used
                  on this channel."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { false }
             ::= { docsIfCmtsModulationEntry 6 }
     
     docsIfCmtsModFECErrorCorrection OBJECT-TYPE
             SYNTAX      Integer32 (0..16)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of correctable errored bytes (t) used in
                  forward error correction code. The value of 0 indicates
                  no correction is employed. The number of check bytes
                  appended will be twice this value."
     
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             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 0 }
             ::= { docsIfCmtsModulationEntry 7 }
     
     docsIfCmtsModFECCodewordLength OBJECT-TYPE
             SYNTAX      Integer32 (1..255)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of data bytes (k) in the forward error
                  correction codeword.
                  This object is not used if docsIfCmtsModFECErrorCorrection
                  is zero."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 32 }
             ::= { docsIfCmtsModulationEntry 8 }
     
     docsIfCmtsModScramblerSeed OBJECT-TYPE
             SYNTAX      Integer32 (0..32767)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The 15 bit seed value for the scrambler polynomial."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 0 }
             ::= { docsIfCmtsModulationEntry 9 }
     
     docsIfCmtsModMaxBurstSize OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The maximum number of mini-slots that can be transmitted
                  during this channel's burst time. Returns zero if the
                  burst length is bounded by the allocation MAP rather than
                  this profile.
                  Default value is 0 except for shortData, where it is 8."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             ::= { docsIfCmtsModulationEntry 10 }
     
     
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     docsIfCmtsModGuardTimeSize OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of symbol-times which must follow the end of
                  this channel's burst. Default value is the minimum time
                  needed by the implementation for this modulation profile."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             ::= { docsIfCmtsModulationEntry 11 }
     
     docsIfCmtsModLastCodewordShortened OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Indicates if the last FEC codeword is truncated."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { true }
             ::= { docsIfCmtsModulationEntry 12 }
     
     docsIfCmtsModScrambler OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Indicates if the scrambler is employed."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { false }
             ::= { docsIfCmtsModulationEntry 13 }
     
     docsIfCmtsModByteInterleaverDepth     OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "ATDMA Byte Interleaver Depth (Ir). This object returns 1
                  for non ATDMA profiles."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 1 }
     
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             ::= { docsIfCmtsModulationEntry 14 }
     
     docsIfCmtsModByteInterleaverBlockSize OBJECT-TYPE
             SYNTAX      Unsigned32
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "ATDMA Byte Interleaver Block size (Br). This object
                  returns zero for non ATDMA profiles "
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 18 }
             ::= { docsIfCmtsModulationEntry 15 }
     
     docsIfCmtsModPreambleType        OBJECT-TYPE
             SYNTAX       INTEGER {
                 unknown(0),
                 qpsk0(1),
                 qpsk1(2)
             }
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Preamble type for DOCSIS 2.0 bursts. The value
                  'unknown(0)' represents a row entry consisting only of
                  DOCSIS 1.x bursts"
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { qpsk0 }
             ::= { docsIfCmtsModulationEntry 16 }
     
     docsIfCmtsModTcmErrorCorrectionOn OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Trellis Code Modulation (TCM) On/Off. This value returns
                  false for non S-CDMA profiles."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { false }
             ::= { docsIfCmtsModulationEntry 17 }
     
     docsIfCmtsModScdmaInterleaverStepSize OBJECT-TYPE
             SYNTAX      Unsigned32 (0 | 1..32)
             MAX-ACCESS  read-create
     
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             STATUS      current
             DESCRIPTION
                 " S-CDMA Interleaver step size. This value returns zero
                   for non S-CDMA profiles."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
     
             DEFVAL { 1 }
             ::= { docsIfCmtsModulationEntry 18 }
     
     docsIfCmtsModScdmaSpreaderEnable      OBJECT-TYPE
             SYNTAX      TruthValue
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 " S-CDMA spreader. This value returns false for non S-CDMA
                   profiles. Default value for IUC 3 and 4 is OFF, for
                   all other IUCs it is ON."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             ::= { docsIfCmtsModulationEntry 19 }
     
     docsIfCmtsModScdmaSubframeCodes      OBJECT-TYPE
             SYNTAX      Unsigned32 (0 | 1..128)
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 " S-CDMA sub-frame size. This value returns zero
                   for non S-CDMA profiles."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { 1 }
             ::= { docsIfCmtsModulationEntry 20 }
     
     docsIfCmtsModChannelType              OBJECT-TYPE
             SYNTAX      DocsisUpstreamType
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Describes the modulation channel type for this modulation
                  entry."
             REFERENCE
                 "Data-Over-Cable Service Interface Specifications: Radio
                  Frequency Interface Specification SP-RFIv2.0-I04-030730,
                  Table 8-19."
             DEFVAL { tdma }
     
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             ::= { docsIfCmtsModulationEntry 21 }
     
     docsIfCmtsQosProfilePermissions OBJECT-TYPE
             SYNTAX      BITS {
                 createByManagement(0),
                 updateByManagement(1),
                 createByModems(2)
             }
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "This object specifies permitted methods of creating
                  entries in docsIfQosProfileTable.
                  CreateByManagement(0) is set if entries can be created
                  using SNMP. UpdateByManagement(1) is set if updating
                  entries using SNMP is permitted. CreateByModems(2)
                  is set if entries can be created based on information
                  in REG-REQ MAC messages received from Cable Modems.
                  Information in this object is only applicable if
                  docsIfQosProfileTable is implemented as read-create.
                  Otherwise, this object is implemented as read-only
                  and returns CreateByModems(2).
                  Either CreateByManagement(0) or CreateByModems(1)
                  must be set when writing to this object.
                  Note that BITS objects are encoded most significant bit
                  first. For example, if bit 2 is set, the value of this
                  object is the octet string '20'H."
             ::= { docsIfCmtsObjects 6 }
     
     docsIfCmtsMacToCmTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsMacToCmEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "This is a table to provide a quick access index into the
                  docsIfCmtsCmStatusTable. There is exactly one row in this
                  table for each row in the docsIfCmtsCmStatusTable. In
                  general, the management station should use this table only
                  to get a pointer into the docsIfCmtsCmStatusTable (which
                  corresponds to the CM's RF interface MAC address), and
                  should not iterate (e.g. GetNext through) this table."
             ::= { docsIfCmtsObjects 7 }
     
     docsIfCmtsMacToCmEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsMacToCmEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "A row in the docsIfCmtsMacToCmTable.
                  An entry in this table exists for each Cable Modem
                  that is connected to the CMTS implementing this table."
             INDEX   { docsIfCmtsCmMac }
     
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             ::= {docsIfCmtsMacToCmTable 1 }
     
     DocsIfCmtsMacToCmEntry ::= SEQUENCE {
                     docsIfCmtsCmMac     MacAddress,
                     docsIfCmtsCmPtr     Integer32
             }
     
     docsIfCmtsCmMac OBJECT-TYPE
             SYNTAX      MacAddress
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "The RF side MAC address for the referenced CM. (E.g. the
                  interface on the CM that has docsCableMacLayer(127) as
                  its ifType."
             ::= { docsIfCmtsMacToCmEntry 1 }
     
     docsIfCmtsCmPtr OBJECT-TYPE
             SYNTAX      Integer32 (1..2147483647)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "An row index into docsIfCmtsCmStatusTable. When queried
                  with the correct instance value (e.g. a CM's MAC address),
                  returns the index in docsIfCmtsCmStatusTable which
                  represents that CM."
             ::= { docsIfCmtsMacToCmEntry 2 }
     
     
     -- The following independent object and associated table provide
     -- operators with a mechanism to evaluate the load/utilization of
     -- both upstream and downstream physical channels. This information
     -- may be used for capacity planning and incident analysis, and may
     -- be particularly helpful in provisioning of high value QOS.
     --
     -- Utilization is expressed as an index representing the calculated
     -- percentage utilization of the upstream or downstream channel in
     -- the most recent sampling interval (ie. utilization interval).
     -- Refer to the DESCRIPTION field of the docsIfCmtsChannelUtUtilization
     -- object for definitions and calculation details.
     
     
     docsIfCmtsChannelUtilizationInterval OBJECT-TYPE
             SYNTAX      Integer32 (0..86400)
             UNITS       "seconds"
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The time interval in seconds over which the channel
                  utilization index is calculated. All upstream/downstream
                  channels use the same
                  docsIfCmtsChannelUtilizationInterval.
     
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                  Setting a value of zero disables utilization reporting.
                  A channel utilization index is calculated over a fixed
                  window applying to the most recent
                  docsIfCmtsChannelUtilizationInterval. It would therefore
                  be prudent to use a relatively short
                  docsIfCmtsChannelUtilizationInterval.
                  It is a vendor decision whether to reset the timer when
                  docsIfCmtsChannelUtilizationInterval is changed during a
                  utilization sampling period."
             ::= { docsIfCmtsObjects 8 }
     
     
     docsIfCmtsChannelUtilizationTable  OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsChannelUtilizationEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Reports utilization statistics for attached upstream and
                  downstream physical channels."
             ::= { docsIfCmtsObjects 9 }
     
     docsIfCmtsChannelUtilizationEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsChannelUtilizationEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Utilization statistics for a single upstream or downstream
                  physical channel. An entry exists in this table for each
                  ifEntry with an ifType equal to
                  docsCableDownstreamInterface (128)
                  or docsCableUpstreamInterface (129)."
             INDEX  { ifIndex, docsIfCmtsChannelUtIfType,
                  docsIfCmtsChannelUtId }
             ::= { docsIfCmtsChannelUtilizationTable 1 }
     
     DocsIfCmtsChannelUtilizationEntry ::= SEQUENCE {
                 docsIfCmtsChannelUtIfType         IANAifType,
                 docsIfCmtsChannelUtId             Integer32,
                 docsIfCmtsChannelUtUtilization    Integer32
             }
     
     docsIfCmtsChannelUtIfType OBJECT-TYPE
             SYNTAX       IANAifType
             MAX-ACCESS   not-accessible
             STATUS       current
             DESCRIPTION
                 "The secondary index into this table. Indicates the IANA
                  interface type associated with this physical channel.
                  Only docsCableDownstreamInterface (128) and
                  docsCableUpstreamInterface (129) are valid."
             ::= { docsIfCmtsChannelUtilizationEntry 1 }
     
     
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     docsIfCmtsChannelUtId OBJECT-TYPE
             SYNTAX       Integer32 (0..255)
             MAX-ACCESS   not-accessible
             STATUS       current
             DESCRIPTION
                  "The tertiary index into this table. Indicates the CMTS
                   identifier for this physical channel."
             ::= { docsIfCmtsChannelUtilizationEntry 2 }
     
     docsIfCmtsChannelUtUtilization OBJECT-TYPE
             SYNTAX       Integer32 (0..100)
             UNITS        "percent"
             MAX-ACCESS   read-only
             STATUS       current
             DESCRIPTION
                 "The calculated and truncated utilization index for this
                  physical upstream or downstream channel, accurate as of
                  the most recent docsIfCmtsChannelUtilizationInterval.
     
                  Upstream Channel Utilization Index:
                  The upstream channel utilization index is expressed as a
                  percentage of minislots utilized on the physical channel,
                  regardless of burst type. For an Initial Maintenance
                  region, the minislots for the complete region are
                  considered utilized if the CMTS received an upstream
                  burst within the region from any CM on the physical
                  channel.  For contention REQ and REQ/DATA regions, the
                  minislots for a transmission opportunity within the
                  region are considered utilized if the CMTS received an
                  upstream burst within the opportunity from any CM on the
                  physical channel. For all other regions, utilized
                  minislots are those in which the CMTS granted
                  bandwidth to any unicast SID on the physical channel.
     
                  For an upstream interface that has multiple logical
                  upstream channels enabled, the utilization index is a
                  weighted sum of utilization indices for the logical
                  channels. The weight for each utilization index is the
                  percentage of upstream minislots allocated for the
                  corresponding logical channel.
                  Example:
                  If 75% of bandwidth is allocated to the first logical
                  channel and 25% to the second, and the utilization
                  indices for each are 60 and 40 respectively, the
                  utilization index for the upstream physical channel is
                  (60 * 0.75) + (40 * 0.25) = 55. This figure
                  applies to the most recent utilization interval.
     
                  Downstream Channel Utilization Index:
                  The downstream channel utilization index is a percentage
                  expressing the ratio between bytes used to transmit data
                  versus the total number of bytes transmitted in the raw
     
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                  bandwidth of the MPEG channel. As with the upstream
                  utilization index, the calculated value represents
                  the most recent utilization interval.
                  Formula:
                  Downstream utilization index =
                  (100 * (data bytes / raw bytes))
     
                  Definitions:
                  Data bytes:    Number of bytes transmitted as data in the
                                 docsIfCmtsChannelUtilizationInterval.
                                 Identical to docsIfCmtsDownChannelCtrUsed
                                 Bytes measured over the utilization
                                 interval.
                  Raw bandwidth: Total number of bytes available for
                                 transmitting data, not including bytes
                                 used for headers and other overhead.
                  Raw bytes:     (raw bandwidth *
                                 docsIfCmtsChannelUtilizationInterval).
                                 Identical to docsIfCmtsDownChannelCtrTotal
                                 Bytes measured over the utilization
                                 interval."
     
             ::= { docsIfCmtsChannelUtilizationEntry 3 }
     
     
     -- The following table provides operators with input data appropriate
     -- for calculating downstream channel utilization.  Operators may use
     -- the docsIfCmtsChannelUtilizationTable, or perform their own polling
     -- of the docsIfCmtsDownChannelCounterTable objects to characterize
     -- their downstream channel usage. The 32 bit counter objects are
     -- included to provide backward compatibility with SNMPv1 managers,
     -- which cannot access 64 bit counter objects.
     
     docsIfCmtsDownChannelCounterTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsDownChannelCounterEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "This table is implemented at the CMTS to collect
                  downstream channel statistics for utilization
                  calculations."
             ::= { docsIfCmtsObjects 10 }
     
     docsIfCmtsDownChannelCounterEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsDownChannelCounterEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "An entry provides a list of traffic counters for a single
                  downstream channel.
                  An entry in this table exists for each ifEntry with an
                  ifType of docsCableDownstream(128)."
     
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             INDEX { ifIndex }
             ::= { docsIfCmtsDownChannelCounterTable 1 }
     
     DocsIfCmtsDownChannelCounterEntry ::= SEQUENCE {
                 docsIfCmtsDownChnlCtrId              Integer32,
                 docsIfCmtsDownChnlCtrTotalBytes      Counter32,
                 docsIfCmtsDownChnlCtrUsedBytes       Counter32,
                 docsIfCmtsDownChnlCtrExtTotalBytes   Counter64,
                 docsIfCmtsDownChnlCtrExtUsedBytes    Counter64
             }
     
     docsIfCmtsDownChnlCtrId OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The Cable Modem Termination System (CMTS) identification
                  of the downstream channel within this particular MAC
                  interface. If the interface is down, the object returns
                  the most current value. If the downstream channel ID is
                  unknown, this object returns a value of 0."
             ::= { docsIfCmtsDownChannelCounterEntry 1 }
     
     docsIfCmtsDownChnlCtrTotalBytes OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CMTS, the total number of bytes in the Payload
                  portion of MPEG Packets (ie. not including MPEG header
                  or pointer_field) transported by this downstream channel
                  since CMTS initialization. This is the 32 bit version of
                  docsIfCmtsDownChnlCtrExtTotalBytes, included to provide
                  back compatibility with SNMPv1 managers.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsDownChannelCounterEntry 2 }
     
     docsIfCmtsDownChnlCtrUsedBytes OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CMTS, the total number of DOCSIS data bytes
                  transported by this downstream channel since CMTS
                  initialization. The number of data bytes is defined as the
                  total number of bytes transported in DOCSIS payloads minus
                  the number of stuff bytes transported in DOCSIS payloads.
                  This is the 32 bit version of
                  docsIfCmtsDownChnlCtrExtUsedBytes, included to provide
     
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                  back compatibility with SNMPv1 managers.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsDownChannelCounterEntry 3 }
     
     docsIfCmtsDownChnlCtrExtTotalBytes OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CMTS, the total number of bytes in the Payload
                  portion of MPEG Packets (ie. not including MPEG header
                  or pointer_field) transported by this downstream channel
                  since CMTS initialization. This is the 64 bit version of
                  docsIfCmtsDownChnlCtrTotalBytes, and will not be
                  accessible to SNMPv1 managers.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsDownChannelCounterEntry 4 }
     
     docsIfCmtsDownChnlCtrExtUsedBytes OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "At the CMTS, the total number of DOCSIS data bytes
                  transported by this downstream channel since CMTS
                  initialization. The number of data bytes is defined as the
                  total number of bytes transported in DOCSIS payloads minus
                  the number of stuff bytes transported in DOCSIS payloads.
                  This is the 64 bit version of
                  docsIfCmtsDownChnlCtrUsedBytes, and will not be accessible
                  to SNMPv1 managers.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsDownChannelCounterEntry 5 }
     
     
     
     
     -- The following table provides operators with input data appropriate
     -- for calculating upstream channel utilization, and for determining
     -- the traffic characteristics of upstream channels. Operators may use
     -- the docsIfCmtsChannelUtilizationTable, or perform their own polling
     -- of the docsIfCmtsUpChannelCounterTable objects for utilization
     -- determination.
     
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     -- The first four 32 and 64 objects in this table are mandatory.
     -- Vendors may choose to implement the remaining optional objects to
     -- provide operators with finer characterization of upstream channel
     -- traffic patterns. The 32 bit counter objects are included to provide
     -- backward compatibility with SNMPv1 managers, which cannot access 64
     -- bit counter objects.
     
     
     docsIfCmtsUpChannelCounterTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF DocsIfCmtsUpChannelCounterEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "This table is implemented at the CMTS to provide upstream
                  channel statistics appropriate for channel utilization
                  calculations."
             ::= { docsIfCmtsObjects 11 }
     
     docsIfCmtsUpChannelCounterEntry OBJECT-TYPE
             SYNTAX      DocsIfCmtsUpChannelCounterEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "List of traffic statistics for a single upstream channel.
                  For Docsis 2.0 CMTSs, an entry in this table
                  exists for each ifEntry with an ifType of
                  docsCableUpstreamChannel (205).
                  For Docsis 1.x CMTSs, an entry in this table
                  exists for each ifEntry with an ifType of
                  docsCableUpstreamInterface (129)."
             INDEX { ifIndex }
             ::= { docsIfCmtsUpChannelCounterTable 1 }
     
     DocsIfCmtsUpChannelCounterEntry ::= SEQUENCE {
                 docsIfCmtsUpChnlCtrId                          Integer32,
                 docsIfCmtsUpChnlCtrTotalMslots                 Counter32,
                 docsIfCmtsUpChnlCtrUcastGrantedMslots          Counter32,
                 docsIfCmtsUpChnlCtrTotalCntnMslots             Counter32,
                 docsIfCmtsUpChnlCtrUsedCntnMslots              Counter32,
                 docsIfCmtsUpChnlCtrExtTotalMslots              Counter64,
                 docsIfCmtsUpChnlCtrExtUcastGrantedMslots       Counter64,
                 docsIfCmtsUpChnlCtrExtTotalCntnMslots          Counter64,
                 docsIfCmtsUpChnlCtrExtUsedCntnMslots           Counter64,
                 docsIfCmtsUpChnlCtrCollCntnMslots              Counter32,
                 docsIfCmtsUpChnlCtrTotalCntnReqMslots          Counter32,
                 docsIfCmtsUpChnlCtrUsedCntnReqMslots           Counter32,
                 docsIfCmtsUpChnlCtrCollCntnReqMslots           Counter32,
                 docsIfCmtsUpChnlCtrTotalCntnReqDataMslots      Counter32,
                 docsIfCmtsUpChnlCtrUsedCntnReqDataMslots       Counter32,
                 docsIfCmtsUpChnlCtrCollCntnReqDataMslots       Counter32,
                 docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots    Counter32,
                 docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots     Counter32,
     
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                 docsIfCmtsUpChnlCtrCollCntnInitMaintMslots     Counter32,
                 docsIfCmtsUpChnlCtrExtCollCntnMslots           Counter64,
                 docsIfCmtsUpChnlCtrExtTotalCntnReqMslots       Counter64,
                 docsIfCmtsUpChnlCtrExtUsedCntnReqMslots        Counter64,
                 docsIfCmtsUpChnlCtrExtCollCntnReqMslots        Counter64,
                 docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots   Counter64,
                 docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots    Counter64,
                 docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots    Counter64,
                 docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots Counter64,
                 docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots  Counter64,
                 docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots  Counter64
             }
     
     
     docsIfCmtsUpChnlCtrId OBJECT-TYPE
             SYNTAX      Integer32 (0..255)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The CMTS identification of the upstream channel."
             ::= { docsIfCmtsUpChannelCounterEntry 1 }
     
     
     docsIfCmtsUpChnlCtrTotalMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of all minislots
                  defined for this upstream logical channel. This count
                  includes all IUCs and SIDs, even those allocated to the
                  NULL SID for a 2.0 logical channel which is inactive. This
                  is the 32 bit version of docsIfCmtsUpChnlCtrExtTotalMslots
                  and is included for back compatibility with SNMPv1
                  managers. Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 2 }
     
     
     docsIfCmtsUpChnlCtrUcastGrantedMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of unicast
                  granted minislots on the upstream logical channel,
                  regardless of burst type. Unicast granted minislots are
                  those in which the CMTS assigned bandwidth to any unicast
                  SID on the logical channel. However this object does not
     
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                  include minislots for reserved IUCs, or grants to SIDs
                  designated as meaning 'no CM'. This is the 32 bit version
                  of docsIfCmtsUpChnlCtrExtUcastGrantedMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 3 }
     
     
     docsIfCmtsUpChnlCtrTotalCntnMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  minislots defined for this upstream logical channel. This
                  count includes all minislots assigned to a broadcast or
                  multicast SID on the logical channel. This is the 32 bit
                  version of docsIfCmtsUpChnlCtrExtTotalCntnMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 4 }
     
     
     docsIfCmtsUpChnlCtrUsedCntnMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  minislots utilized on the upstream logical channel. For
                  contention regions, utilized minislots are those in which
                  the CMTS correctly received an upstream burst from any CM
                  on the upstream logical channel. This is the 32 bit
                  version of docsIfCmtsUpChnlCtrExtUsedCntnMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 5 }
     
     
     docsIfCmtsUpChnlCtrExtTotalMslots OBJECT-TYPE
     
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             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of all minislots
                  defined for this upstream logical channel. This count
                  includes all IUCs and SIDs, even those allocated to the
                  NULL SID for a 2.0 logical channel which is inactive. This
                  is the 64 bit version of docsIfCmtsUpChnlCtrTotalMslots,
                  and will not be accessible to SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 6 }
     
     
     docsIfCmtsUpChnlCtrExtUcastGrantedMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of unicast
                  granted minislots on the upstream logical channel,
                  regardless of burst type. Unicast granted minislots are
                  those in which the CMTS assigned bandwidth to any unicast
                  SID on the logical channel. However this object does not
                  include minislots for reserved IUCs, or grants to SIDs
                  designated as meaning 'no CM'. This is the 64 bit version
                  of docsIfCmtsUpChnlCtrUcastGrantedMslots, and will not be
                  accessible to SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 7 }
     
     
     docsIfCmtsUpChnlCtrExtTotalCntnMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  minislots defined for this upstream logical channel. This
                  count includes all minislots assigned to a broadcast or
                  multicast SID on the logical channel. This is the 64 bit
                  version of docsIfCmtsUpChnlCtrTotalCntnMslots, and will
                  not be accessible to SNMPv1 managers.
                  Support for this object is mandatory.
     
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                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 8 }
     
     
     docsIfCmtsUpChnlCtrExtUsedCntnMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  minislots utilized on the upstream logical channel. For
                  contention regions, utilized minislots are those in which
                  the CMTS correctly received an upstream burst from any CM
                  on the upstream logical channel. This is the 64 bit
                  version of docsIfCmtsUpChnlCtrUsedCntnMslots, and will not
                  be accessible to SNMPv1 managers.
                  Support for this object is mandatory.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 9 }
     
     
     docsIfCmtsUpChnlCtrCollCntnMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  minislots subjected to collisions on the upstream logical
                  channel. For contention regions, these are the minislots
                  applicable to bursts that the CMTS detected, but could not
                  correctly receive. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtCollCntnMslots, and is included for
                  back compatibility with SNMPv1 managers. Support for this
                  object is optional. If the object is not supported, a
                  value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 10 }
     
     
     docsIfCmtsUpChnlCtrTotalCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
     
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             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots defined for this upstream logical
                  channel. This count includes all minislots for IUC1
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtTotalCntnReqMslots, and is included
                  for back compatibility with SNMPv1 managers.
                  Support for this object is optional. If the object is not
                  supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 11 }
     
     
     docsIfCmtsUpChnlCtrUsedCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots utilized on this upstream logical
                  channel. This count includes all contention minislots for
                  IUC1 applicable to bursts that the CMTS correctly
                  received. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtUsedCntnReqMslots, and is included
                  for back compatibility with SNMPv1 managers. Support for
                  this object is optional. If the object is not supported,
                  a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 12 }
     
     
     docsIfCmtsUpChnlCtrCollCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots subjected to collisions on this upstream
                  logical channel. This includes all contention minislots
                  for IUC1 applicable to bursts that the CMTS detected, but
                  could not correctly receive. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtCollCntnReqMslots, and is included
                  for back compatibility with SNMPv1 managers. Support for
                  this object is optional. If the object is not supported,
                  a value of zero is returned.
     
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                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 13 }
     
     
     docsIfCmtsUpChnlCtrTotalCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots defined for this upstream logical
                  channel. This count includes all minislots for IUC2
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is optional. If the object is not
                  supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 14 }
     
     
     docsIfCmtsUpChnlCtrUsedCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots utilized on this upstream logical
                  channel. This includes all contention minislots for IUC2
                  applicable to bursts that the CMTS correctly received.
                  This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is optional. If the object is not
                  supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 15 }
     
     
     docsIfCmtsUpChnlCtrCollCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
     
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             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots subjected to collisions on this
                  upstream logical channel. This includes all contention
                  minislots for IUC2 applicable to bursts that the CMTS
                  detected, but could not correctly receive. This is the 32
                  bit version of
                  docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots, and is
                  included for back compatibility with SNMPv1 managers.
                  Support for this object is optional. If the object is not
                  supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 16 }
     
     
     docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  initial maintenance minislots defined for this upstream
                  logical channel. This includes all minislots for IUC3
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots,
                  and is included for back compatibility with SNMPv1
                  managers. Support for this object is optional. If the
                  object is not supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 17 }
     
     
     docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  initial maintenance minislots utilized on this upstream
                  logical channel. This includes all contention minislots
                  for IUC3 applicable to bursts that the CMTS correctly
                  received. This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots,
                  and is included for back compatibility with SNMPv1
     
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                  managers. Support for this object is optional. If the
                  object is not supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 18 }
     
     
     docsIfCmtsUpChnlCtrCollCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  initial maintenance minislots subjected to collisions on
                  this upstream logical channel. This includes all
                  contention minislots for IUC3 applicable to bursts that
                  the CMTS detected, but could not correctly receive.
                  This is the 32 bit version of
                  docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots,
                  and is included for back compatibility with SNMPv1
                  managers. Support for this object is optional. If the
                  object is not supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 19 }
     
     
     docsIfCmtsUpChnlCtrExtCollCntnMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of collision
                  contention minislots on the upstream logical channel.
                  For contention regions, these are the minislots applicable
                  to bursts that the CMTS detected, but could not correctly
                  receive. This is the 64 bit version of
                  docsIfCmtsUpChnlCtrCollCntnMslots, and will not be
                  accessible to SNMPv1 managers. Support for this object is
                  optional. If the object is not supported, a value of zero
                  is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 20 }
     
     
     
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     docsIfCmtsUpChnlCtrExtTotalCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots defined for this upstream logical
                  channel. This count includes all minislots for IUC1
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 64 bit version of
                  docsIfCmtsUpChnlCtrTotalCntnReqMslots, and will not be
                  accessible to SNMPv1 managers. Support for this object
                  is optional. If the object is not supported, a value of
                  zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 21 }
     
     
     docsIfCmtsUpChnlCtrExtUsedCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots utilized on this upstream logical
                  channel. This count includes all contention minislots for
                  IUC1 applicable to bursts that the CMTS correctly
                  received. This is the 64 bit version of
                  docsIfCmtsUpChnlCtrUsedCntnReqMslots, and will not be
                  accessible to SNMPv1 managers. Support for this object is
                  optional. If the object is not supported, a value of zero
                  is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 22 }
     
     
     docsIfCmtsUpChnlCtrExtCollCntnReqMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request minislots subjected to collisions on this upstream
                  logical channel. This includes all contention minislots
                  for IUC1 applicable to bursts that the CMTS detected,
                  but could not correctly receive. This is the 64 bit
     
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                  version of docsIfCmtsUpChnlCtrCollCntnReqMslots, and will
                  not be accessible to SNMPv1 managers. Support for this
                  object is optional. If the object is not supported, a
                  value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 23 }
     
     
     docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots defined for this upstream logical
                  channel. This count includes all minislots for IUC2
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 64 bit version of
                  docsIfCmtsUpChnlCtrTotalCntnReqDataMslots, and will not be
                  accessible to SNMPv1 managers. Support for this object is
                  optional. If the object is not supported, a value of zero
                  is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 24 }
     
     
     docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots utilized on this upstream logical
                  channel. This includes all contention minislots for IUC2
                  applicable to bursts that the CMTS correctly received.
                  This is the 64 bit version of
                  docsIfCmtsUpChnlCtrUsedCntnReqDataMslots, and will not be
                  accessible to SNMPv1 managers. Support for this object is
                  optional. If the object is not supported, a value of zero
                  is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 25 }
     
     
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     docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  request data minislots subjected to collisions on this
                  upstream logical channel. This includes all contention
                  minislots for IUC2 applicable to bursts that the CMTS
                  detected, but could not correctly receive. This is the
                  64 bit version of
                  docsIfCmtsUpChnlCtrCollCntnReqDataMslots,
                  and will not be accessible to SNMPv1 managers. Support
                  for this object is optional. If the object is not
                  supported, a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 26 }
     
     
     docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of initial
                  maintenance minislots defined for this upstream logical
                  channel. This count includes all minislots for IUC3
                  assigned to a broadcast or multicast SID on the logical
                  channel. This is the 64 bit version of
                  docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots,
                  and will not be accessible to SNMPv1 managers. Support for
                  this object is optional. If the object is not supported,
                  a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 27 }
     
     
     docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of initial
                  maintenance minislots utilized on this upstream logical
                  channel. This includes all contention minislots for IUC3
     
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                  applicable to bursts that the CMTS correctly received.
                  This is the 64 bit version of
                  docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots,
                  and will not be accessible to SNMPv1 managers. Support for
                  this object is optional. If the object is not supported,
                  a value of zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 28 }
     
     
     docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots OBJECT-TYPE
             SYNTAX      Counter64
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Current count, from CMTS initialization, of contention
                  initial maintenance minislots subjected to collisions on
                  this upstream logical channel. This includes all
                  contention minislots for IUC3 applicable to bursts that
                  the CMTS detected, but could not correctly receive.
                  This is the 64 bit version of
                  docsIfCmtsUpChnlCtrCollCntnInitMaintMslots, and will not
                  be accessible to SNMPv1 managers. Support for this object
                  is optional. If the object is not supported, a value of
                  zero is returned.
                  Discontinuities in the value of this counter can occur
                  at reinitialization of the managed system, and at other
                  times as indicated by the the value of
                  ifCounterDiscontinuityTime for the associated ifIndex."
             ::= { docsIfCmtsUpChannelCounterEntry 29 }
     
     
     
     
     --
     -- notification group is for future extension.
     --
     
     docsIfNotification OBJECT IDENTIFIER     ::= { docsIfMib 2 }
     
     --
     -- RFC 2670 Conformance definitions
     --
     docsIfConformance  OBJECT IDENTIFIER     ::= { docsIfMib 3 }
     docsIfCompliances  OBJECT IDENTIFIER     ::= { docsIfConformance 1 }
     docsIfGroups       OBJECT IDENTIFIER     ::= { docsIfConformance 2 }
     
     -- compliance statements
     
     
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     docsIfBasicCompliance MODULE-COMPLIANCE
             STATUS      current
             DESCRIPTION
                 "The compliance statement for devices that implement
                  MCNS/DOCSIS compliant Radio Frequency Interfaces."
     
     MODULE  -- docsIfMib
     
     -- unconditionally mandatory groups
     MANDATORY-GROUPS {
             docsIfBasicGroup
             }
     
     -- conditionally mandatory group
     GROUP docsIfCmGroup
             DESCRIPTION
                 "This group is implemented only in Cable Modems, not in
                  Cable Modem Termination Systems."
     
     -- conditionally mandatory group
     GROUP docsIfCmtsGroup
             DESCRIPTION
                 "This group is implemented only in Cable Modem Termination
                  Systems, not in Cable Modems."
     
     OBJECT  docsIfDownChannelFrequency
             WRITE-SYNTAX Integer32 (54000000..860000000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems.  The values above are
                  appropriate for a cable plant using a  Sub-Split channel
                  plan.  If DOCSIS is extended to cover other types of
                  channel plans (and frequency allocations) this object
                  will be modified accordingly."
     
     OBJECT  docsIfDownChannelWidth
             WRITE-SYNTAX Integer32 (6000000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is conformant to implement this object as read-only.
                  In Cable Modems, this object is always implemented as
                  read-only.  The above value is appropriate for cable
                  plants running under  NTSC (National Television
                  Standards Committee) standards.  If DOCSIS is extended to
                  work with other standard (e.g. European standards), this
                  object will be modified accordingly."
     
     OBJECT  docsIfDownChannelModulation
             WRITE-SYNTAX INTEGER {
                                    qam64 (3),
                                    qam256 (4)
     
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                                  }
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfDownChannelInterleave
             WRITE-SYNTAX INTEGER {
                         taps8Increment16(3),
                         taps16Increment8(4),
                         taps32Increment4(5),
                         taps64Increment2(6),
                         taps128Increment1(7)
                          }
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfDownChannelPower
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelFrequency
             WRITE-SYNTAX Integer32 (5000000..42000000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems.The values above are
                  appropriate for a cable plant using a  Sub-Split channel
                  plan.  If DOCSIS is extended to cover other types of
                  channel plans (and frequency allocations) this object
                  will be modified accordingly."
     
     OBJECT  docsIfUpChannelWidth
             WRITE-SYNTAX Integer32 (200000..3200000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems.The above value is appropriate
                  for cable plants running under  NTSC (National Television
                  Standards Committee) standards.  If DOCSIS is extended to
                  work with other standard (e.g. European standards), this
                  object will be modified accordingly."
     
     OBJECT  docsIfUpChannelModulationProfile
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
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     OBJECT  docsIfUpChannelSlotSize
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfUpChannelRangingBackoffStart
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelRangingBackoffEnd
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelTxBackoffStart
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelTxBackoffEnd
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems;
                  read-only in Cable Modems."
     
     OBJECT  docsIfQosProfPriority
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfMaxUpBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfGuarUpBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
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     OBJECT  docsIfQosProfMaxDownBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfMaxTxBurst
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfBaselinePrivacy
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfStatus
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfCmtsServiceAdminStatus
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsSyncInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsUcdInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsInsertInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsInvitedRangingAttempts
             MIN-ACCESS  read-only
             DESCRIPTION
     
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                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsQosProfilePermissions
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT docsIfCmtsModType
             WRITE-SYNTAX INTEGER {
                             qpsk (2),
                             qam16 (3)
                              }
             DESCRIPTION
                 "Management station may only set 16QAM or QPSK modulation,
                  but others might be possible based on device
                  configuration."
     
     
             ::= { docsIfCompliances 1 }
     
     docsIfBasicGroup OBJECT-GROUP
             OBJECTS {
                 docsIfDownChannelId,
                 docsIfDownChannelFrequency,
                 docsIfDownChannelWidth,
                 docsIfDownChannelModulation,
                 docsIfDownChannelInterleave,
                 docsIfDownChannelPower,
                 docsIfUpChannelId,
                 docsIfUpChannelFrequency,
                 docsIfUpChannelWidth,
                 docsIfUpChannelModulationProfile,
                 docsIfUpChannelSlotSize,
                 docsIfUpChannelTxTimingOffset,
                 docsIfUpChannelRangingBackoffStart,
                 docsIfUpChannelRangingBackoffEnd,
                 docsIfUpChannelTxBackoffStart,
                 docsIfUpChannelTxBackoffEnd,
                 docsIfQosProfPriority,
                 docsIfQosProfMaxUpBandwidth,
                 docsIfQosProfGuarUpBandwidth,
                 docsIfQosProfMaxDownBandwidth,
                 docsIfQosProfMaxTxBurst,
                 docsIfQosProfBaselinePrivacy,
                 docsIfQosProfStatus,
                 docsIfSigQIncludesContention,
                 docsIfSigQUnerroreds,
                 docsIfSigQCorrecteds,
                 docsIfSigQUncorrectables,
                 docsIfSigQSignalNoise,
                 docsIfSigQMicroreflections,
                 docsIfSigQEqualizationData
     
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             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in both Cable Modems and
                  Cable Modem Termination Systems."
             ::= { docsIfGroups 1 }
     
     -- The following  table was modified to correct naming conventions for
     -- Counter32 variables.
     docsIfCmGroup OBJECT-GROUP
             OBJECTS {
                 docsIfCmCmtsAddress,
                 docsIfCmCapabilities,
     --            docsIfCmRangingRespTimeout,
                 docsIfCmRangingTimeout,
                 docsIfCmStatusValue,
                 docsIfCmStatusCode,
                 docsIfCmStatusTxPower,
                 docsIfCmStatusResets,
                 docsIfCmStatusLostSyncs,
                 docsIfCmStatusInvalidMaps,
                 docsIfCmStatusInvalidUcds,
     --            docsIfCmStatusInvalidRangingResp,
                 docsIfCmStatusInvalidRangingResponses,
     --            docsIfCmStatusInvalidRegistrationResp,
                 docsIfCmStatusInvalidRegistrationResponses,
                 docsIfCmStatusT1Timeouts,
                 docsIfCmStatusT2Timeouts,
                 docsIfCmStatusT3Timeouts,
                 docsIfCmStatusT4Timeouts,
                 docsIfCmStatusRangingAborteds,
                 docsIfCmServiceQosProfile,
                 docsIfCmServiceTxSlotsImmed,
                 docsIfCmServiceTxSlotsDed,
                 docsIfCmServiceTxRetries,
     --            docsIfCmServiceTxExceeded,
                 docsIfCmServiceTxExceededs,
                 docsIfCmServiceRqRetries,
     --            docsIfCmServiceRqExceeded
                 docsIfCmServiceRqExceededs
             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in Cable Modems."
             ::= { docsIfGroups 2 }
     
     docsIfCmtsGroup OBJECT-GROUP
             OBJECTS {
                 docsIfCmtsCapabilities,
                 docsIfCmtsSyncInterval,
                 docsIfCmtsUcdInterval,
                 docsIfCmtsMaxServiceIds,
     
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     --            docsIfCmtsInsertionInterval,
                 docsIfCmtsInvitedRangingAttempts,
                 docsIfCmtsInsertInterval,
                 docsIfCmtsStatusInvalidRangeReqs,
                 docsIfCmtsStatusRangingAborteds,
                 docsIfCmtsStatusInvalidRegReqs,
                 docsIfCmtsStatusFailedRegReqs,
                 docsIfCmtsStatusInvalidDataReqs,
                 docsIfCmtsStatusT5Timeouts,
                 docsIfCmtsCmStatusMacAddress,
                 docsIfCmtsCmStatusIpAddress,
                 docsIfCmtsCmStatusDownChannelIfIndex,
                 docsIfCmtsCmStatusUpChannelIfIndex,
                 docsIfCmtsCmStatusRxPower,
                 docsIfCmtsCmStatusTimingOffset,
                 docsIfCmtsCmStatusEqualizationData,
                 docsIfCmtsCmStatusValue,
                 docsIfCmtsCmStatusUnerroreds,
                 docsIfCmtsCmStatusCorrecteds,
                 docsIfCmtsCmStatusUncorrectables,
                 docsIfCmtsCmStatusSignalNoise,
                 docsIfCmtsCmStatusMicroreflections,
                 docsIfCmtsServiceCmStatusIndex,
                 docsIfCmtsServiceAdminStatus,
                 docsIfCmtsServiceQosProfile,
                 docsIfCmtsServiceCreateTime,
                 docsIfCmtsServiceInOctets,
                 docsIfCmtsServiceInPackets,
                 docsIfCmtsModType,
                 docsIfCmtsModControl,
                 docsIfCmtsModPreambleLen,
                 docsIfCmtsModDifferentialEncoding,
                 docsIfCmtsModFECErrorCorrection,
                 docsIfCmtsModFECCodewordLength,
                 docsIfCmtsModScramblerSeed,
                 docsIfCmtsModMaxBurstSize,
                 docsIfCmtsModGuardTimeSize,
                 docsIfCmtsModLastCodewordShortened,
                 docsIfCmtsModScrambler,
                 docsIfCmtsQosProfilePermissions,
                 docsIfCmtsCmPtr
             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in Cable Modem Termination
                  Systems."
             ::= { docsIfGroups 3 }
     
     
     -- The following is not necessary and was commented out to avoid
     -- SMICng warnings
     -- docsIfObsoleteGroup OBJECT-GROUP
     
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     --     OBJECTS {
     --            docsIfCmRangingRespTimeout,
     --            docsIfCmtsInsertionInterval
     --        }
     --        STATUS      obsolete
     --        DESCRIPTION
     --            "Group of objects obsoleted."
     --        ::= { docsIfGroups 4 }
     
     
     --
     -- RFC xxxx Conformance definitions
     --
     
     docsIfCompliancesV2  OBJECT IDENTIFIER     ::= { docsIfConformance 3 }
     docsIfGroupsV2       OBJECT IDENTIFIER     ::= { docsIfConformance 4 }
     
     -- compliance statements
     
     docsIfBasicComplianceV2 MODULE-COMPLIANCE
             STATUS      current
             DESCRIPTION
                 "The compliance statement for devices that implement
                  MCNS/DOCSIS compliant Radio Frequency Interfaces."
     
     MODULE  -- docsIfMib
     
     -- unconditionally mandatory groups
     MANDATORY-GROUPS {
             docsIfBasicGroupV2
             }
     
     -- conditionally mandatory group
     GROUP docsIfCmGroupV2
             DESCRIPTION
                 "This group is implemented only in Cable Modems, not in
                  Cable Modem Termination Systems."
     
     -- conditionally mandatory group
     GROUP docsIfCmtsGroupV2
             DESCRIPTION
                 "This group is implemented only in Cable Modem Termination
                  Systems, not in Cable Modems."
     
     OBJECT  docsIfDownChannelFrequency
             WRITE-SYNTAX Integer32 (47000000..862000000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems,
                  read-only in Cable Modems.
                  A range of 54MHz to 860MHz is appropriate for a cable
                  plant using a North American Sub-Split channel plan.
     
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                  The spectrum range has been expanded to accommodate
                  a lower edge of 47MHz and an upper edge of 862MHz
                  for some European channel plans.
                  If DOCSIS is extended to cover other types of channel
                  plans (and frequency allocations) this object will be
                  modified accordingly."
     
     OBJECT  docsIfDownChannelWidth
             WRITE-SYNTAX Integer32 (6000000 | 8000000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is conformant to implement this object as read-only.
                  In Cable Modems, this object is always implemented as
                  read-only.  The value of 6 MHz is appropriate for cable
                  plants running under NTSC (National Television
                  Standards Committee) standards.  The value of 8 MHz is
                  appropriate for cable plants running under ETSI
                  standards.  For other regional standards, this
                  object will be modified accordingly."
     
     OBJECT  docsIfDownChannelModulation
             WRITE-SYNTAX INTEGER {
                                    qam64 (3),
                                    qam256 (4)
                                  }
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfDownChannelInterleave
             WRITE-SYNTAX INTEGER {
                         taps8Increment16(3),
                         taps16Increment8(4),
                         taps32Increment4(5),
                         taps64Increment2(6),
                         taps128Increment1(7),
                         taps12increment17(8)
                          }
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfDownChannelPower
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-write in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelFrequency
             WRITE-SYNTAX Integer32 (5000000..65000000)
     
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             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems.
                  A range of 5MHz to 42MHz is appropriate for a cable
                  plant using a North American Sub-Split channel plan.
                  The spectrum range has been expanded to accommodate
                  an upper edge of 65MHz for some European channel plans.
                  If DOCSIS is extended to cover other types of channel
                  plans (and frequency allocations) this object will
                  be modified accordingly."
     
     OBJECT  docsIfUpChannelWidth
             WRITE-SYNTAX Integer32 (200000..6400000)
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems. The above value is appropriate
                  for cable plants running under  NTSC (National Television
                  Standards Committee) standards.  If DOCSIS is extended to
                  work with other standard (e.g. European standards), this
                  object will be modified accordingly."
     
     OBJECT  docsIfUpChannelModulationProfile
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelSlotSize
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfUpChannelRangingBackoffStart
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelRangingBackoffEnd
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelTxBackoffStart
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
     
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                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelTxBackoffEnd
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelScdmaActiveCodes
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems. The
                  number of active codes when SCDMA is in use must range
                  from 64 to 128, and must be a non-Prime value.
                  Providing this range allows for the following features
                  and capabilities:
                     1) Power management in S-CDMA spreader-on frames
                        (with a 3 dB spread)
                     2) Avoidance of code 0
                     3) Flexible minislot sizes with and without the use of
                        code 0"
     
     OBJECT  docsIfUpChannelScdmaCodesPerSlot
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelScdmaFrameSize
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelScdmaHoppingSeed
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelType
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelCloneFrom
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelUpdate
     
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             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfUpChannelPreEqEnable
             MIN-ACCESS  read-only
             DESCRIPTION
                 "Read-create in Cable Modem Termination Systems,
                  read-only in Cable Modems."
     
     OBJECT  docsIfQosProfPriority
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfMaxUpBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfGuarUpBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfMaxDownBandwidth
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfBaselinePrivacy
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfQosProfStatus
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
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     OBJECT  docsIfQosProfMaxTransmitBurst
             MIN-ACCESS  read-only
             DESCRIPTION
                 "This object is always read-only in Cable Modems.
                  It is compliant to implement this object as read-only
                  in Cable Modem Termination Systems."
     
     OBJECT  docsIfCmtsServiceAdminStatus
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsSyncInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsUcdInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsInsertInterval
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsInvitedRangingAttempts
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
     OBJECT  docsIfCmtsQosProfilePermissions
             MIN-ACCESS  read-only
             DESCRIPTION
                 "It is compliant to implement this object as read-only."
     
             ::= { docsIfCompliancesV2 1 }
     
     docsIfBasicGroupV2 OBJECT-GROUP
             OBJECTS {
                 docsIfDownChannelId,
                 docsIfDownChannelFrequency,
                 docsIfDownChannelWidth,
                 docsIfDownChannelModulation,
                 docsIfDownChannelInterleave,
                 docsIfDownChannelPower,
                 docsIfDownChannelAnnex,
                 docsIfUpChannelId,
                 docsIfUpChannelFrequency,
                 docsIfUpChannelWidth,
     
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                 docsIfUpChannelModulationProfile,
                 docsIfUpChannelSlotSize,
                 docsIfUpChannelTxTimingOffset,
                 docsIfUpChannelRangingBackoffStart,
                 docsIfUpChannelRangingBackoffEnd,
                 docsIfUpChannelTxBackoffStart,
                 docsIfUpChannelTxBackoffEnd,
                 docsIfUpChannelScdmaActiveCodes,
                 docsIfUpChannelScdmaCodesPerSlot,
                 docsIfUpChannelScdmaFrameSize,
                 docsIfUpChannelScdmaHoppingSeed,
                 docsIfUpChannelType,
                 docsIfUpChannelCloneFrom,
                 docsIfUpChannelUpdate,
                 docsIfUpChannelStatus,
                 docsIfUpChannelPreEqEnable,
                 docsIfQosProfPriority,
                 docsIfQosProfMaxUpBandwidth,
                 docsIfQosProfGuarUpBandwidth,
                 docsIfQosProfMaxDownBandwidth,
                 docsIfQosProfBaselinePrivacy,
                 docsIfQosProfStatus,
                 docsIfQosProfMaxTransmitBurst,
                 docsIfSigQIncludesContention,
                 docsIfSigQUnerroreds,
                 docsIfSigQCorrecteds,
                 docsIfSigQUncorrectables,
                 docsIfSigQSignalNoise,
                 docsIfSigQMicroreflections,
                 docsIfSigQEqualizationData,
                 docsIfSigQExtUnerroreds,
                 docsIfSigQExtCorrecteds,
                 docsIfSigQExtUncorrectables,
                 docsIfDocsisBaseCapability
             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in both Cable Modems and
                  Cable Modem Termination Systems."
             ::= { docsIfGroupsV2 1 }
     
     docsIfCmGroupV2 OBJECT-GROUP
             OBJECTS {
                 docsIfCmCmtsAddress,
                 docsIfCmCapabilities,
                 docsIfCmRangingTimeout,
     --            docsIfCmRangingRespTimeout,
                 docsIfCmStatusValue,
                 docsIfCmStatusCode,
                 docsIfCmStatusTxPower,
                 docsIfCmStatusResets,
                 docsIfCmStatusLostSyncs,
     
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                 docsIfCmStatusInvalidMaps,
                 docsIfCmStatusInvalidUcds,
                 docsIfCmStatusInvalidRangingResponses,
                 docsIfCmStatusInvalidRegistrationResponses,
                 docsIfCmStatusT1Timeouts,
                 docsIfCmStatusT2Timeouts,
                 docsIfCmStatusT3Timeouts,
                 docsIfCmStatusT4Timeouts,
                 docsIfCmStatusRangingAborteds,
                 docsIfCmStatusDocsisOperMode,
                 docsIfCmStatusModulationType,
                 docsIfCmStatusEqualizationData,
                 docsIfCmStatusUCCs,
                 docsIfCmStatusUCCFails,
                 docsIfCmServiceQosProfile,
                 docsIfCmServiceTxSlotsImmed,
                 docsIfCmServiceTxSlotsDed,
                 docsIfCmServiceTxRetries,
                 docsIfCmServiceTxExceededs,
                 docsIfCmServiceRqRetries,
                 docsIfCmServiceRqExceededs,
                 docsIfCmServiceExtTxSlotsImmed,
                 docsIfCmServiceExtTxSlotsDed
     
             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in Cable Modems."
             ::= { docsIfGroupsV2 2 }
     
     docsIfCmtsGroupV2 OBJECT-GROUP
             OBJECTS {
                 docsIfCmtsCapabilities,
                 docsIfCmtsSyncInterval,
                 docsIfCmtsUcdInterval,
                 docsIfCmtsMaxServiceIds,
     --            docsIfCmtsInsertionInterval,
                 docsIfCmtsInvitedRangingAttempts,
                 docsIfCmtsInsertInterval,
                 docsIfCmtsStatusInvalidRangeReqs,
                 docsIfCmtsStatusRangingAborteds,
                 docsIfCmtsStatusInvalidRegReqs,
                 docsIfCmtsStatusFailedRegReqs,
                 docsIfCmtsStatusInvalidDataReqs,
                 docsIfCmtsStatusT5Timeouts,
                 docsIfCmtsCmStatusMacAddress,
                 docsIfCmtsCmStatusDownChannelIfIndex,
                 docsIfCmtsCmStatusUpChannelIfIndex,
                 docsIfCmtsCmStatusRxPower,
                 docsIfCmtsCmStatusTimingOffset,
                 docsIfCmtsCmStatusEqualizationData,
                 docsIfCmtsCmStatusValue,
     
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                 docsIfCmtsCmStatusUnerroreds,
                 docsIfCmtsCmStatusCorrecteds,
                 docsIfCmtsCmStatusUncorrectables,
                 docsIfCmtsCmStatusSignalNoise,
                 docsIfCmtsCmStatusMicroreflections,
                 docsIfCmtsCmStatusExtUnerroreds,
                 docsIfCmtsCmStatusExtCorrecteds,
                 docsIfCmtsCmStatusExtUncorrectables,
                 docsIfCmtsCmStatusDocsisRegMode,
                 docsIfCmtsCmStatusModulationType,
                 docsIfCmtsCmStatusInetAddressType,
                 docsIfCmtsCmStatusInetAddress,
                 docsIfCmtsCmStatusValueLastUpdate,
                 docsIfCmtsCmStatusHighResolutionTimingOffset,
                 docsIfCmtsServiceAdminStatus,
                 docsIfCmtsServiceQosProfile,
                 docsIfCmtsServiceCreateTime,
                 docsIfCmtsServiceInOctets,
                 docsIfCmtsServiceInPackets,
                 docsIfCmtsServiceNewCmStatusIndex,
                 docsIfCmtsModType,
                 docsIfCmtsModControl,
                 docsIfCmtsModPreambleLen,
                 docsIfCmtsModDifferentialEncoding,
                 docsIfCmtsModFECErrorCorrection,
                 docsIfCmtsModFECCodewordLength,
                 docsIfCmtsModScramblerSeed,
                 docsIfCmtsModMaxBurstSize,
                 docsIfCmtsModGuardTimeSize,
                 docsIfCmtsModLastCodewordShortened,
                 docsIfCmtsModScrambler,
                 docsIfCmtsModByteInterleaverDepth,
                 docsIfCmtsModByteInterleaverBlockSize,
                 docsIfCmtsModPreambleType,
                 docsIfCmtsModTcmErrorCorrectionOn,
                 docsIfCmtsModScdmaInterleaverStepSize,
                 docsIfCmtsModScdmaSpreaderEnable,
                 docsIfCmtsModScdmaSubframeCodes,
                 docsIfCmtsModChannelType,
                 docsIfCmtsQosProfilePermissions,
                 docsIfCmtsCmPtr,
                 docsIfCmtsChannelUtilizationInterval,
                 docsIfCmtsChannelUtUtilization,
                 docsIfCmtsDownChnlCtrId,
                 docsIfCmtsDownChnlCtrTotalBytes,
                 docsIfCmtsDownChnlCtrUsedBytes,
                 docsIfCmtsDownChnlCtrExtTotalBytes,
                 docsIfCmtsDownChnlCtrExtUsedBytes,
                 docsIfCmtsUpChnlCtrId,
                 docsIfCmtsUpChnlCtrTotalMslots,
                 docsIfCmtsUpChnlCtrUcastGrantedMslots,
                 docsIfCmtsUpChnlCtrTotalCntnMslots,
     
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                 docsIfCmtsUpChnlCtrUsedCntnMslots,
                 docsIfCmtsUpChnlCtrExtTotalMslots,
                 docsIfCmtsUpChnlCtrExtUcastGrantedMslots,
                 docsIfCmtsUpChnlCtrExtTotalCntnMslots,
                 docsIfCmtsUpChnlCtrExtUsedCntnMslots,
                 docsIfCmtsUpChnlCtrCollCntnMslots,
                 docsIfCmtsUpChnlCtrTotalCntnReqMslots,
                 docsIfCmtsUpChnlCtrUsedCntnReqMslots,
                 docsIfCmtsUpChnlCtrCollCntnReqMslots,
                 docsIfCmtsUpChnlCtrTotalCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrUsedCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrCollCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots,
                 docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots,
                 docsIfCmtsUpChnlCtrCollCntnInitMaintMslots,
                 docsIfCmtsUpChnlCtrExtCollCntnMslots,
                 docsIfCmtsUpChnlCtrExtTotalCntnReqMslots,
                 docsIfCmtsUpChnlCtrExtUsedCntnReqMslots,
                 docsIfCmtsUpChnlCtrExtCollCntnReqMslots,
                 docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots,
                 docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots,
                 docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots,
                 docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots
             }
             STATUS      current
             DESCRIPTION
                 "Group of objects implemented in Cable Modem Termination
                  Systems."
             ::= { docsIfGroupsV2 3 }
     
     
     END
     
     
     
     5.  Acknowledgments
     
         This document is a production of the Docsis 2.0 OSS Working Group.
         It is a revision based on RFC2670, "Radio Frequency (RF)
         Interface Management Information Base for DOCSIS compliant RF
         interfaces" [RFC2670].
     
         The current editor wishes to express gratitude to Rich Prodan, Aviv
         Goren, Greg Nakanishi, Rich Woundy, Eduardo Cardona, and Adi Shaliv
         for their valued advice and opinions.
     
         The current editor is also very grateful to colleague Andr‰ Lejeune
         for his timely and intelligent advice and assistance.
     
     
     
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     6.  Revision History
     
     6.1. Scope
     
          This MIB in this document has been developed to accommodate
          DOCSIS 2.0 devices and their system capabilities. The MIB is an
          update to RFC2670 with the additional incorporation of EuroDocsis
          specific items and the DOCS_IF_EXT mib.
     
     6.2. Extension
     
          We have maintained the MIB objects as defined in RFC 2670. In some
          cases new mib objects have been created with identical
          functionality but greater capacity (ie 32 to 64 bits). In these
          situations, both the original 32 bit objects and the new 64 bit
          objects must be implemented.
     
     7.  Normative References
     
        [RFC1155] Rose, M. and K. McCloghrie, "Structure and Identification
                  of Management Information for TCP/IP-based Internets",
                  STD 16, RFC 1155, May 1990.
     
        [RFC1157] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
                  Management Protocol", STD 15, RFC 1157, May 1990.
     
        [RFC1212] Rose, M. and K. McCloghrie, "Concise MIB Definitions",
                  STD 16, RFC 1212, March 1991.
     
        [RFC1215] Rose, M., "A Convention for Defining Traps for use with
                  the SNMP", RFC 1215, March 1991.
     
        [RFC1901] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
                  "Introduction to Community-based SNMPv2", RFC 1901,
                  January 1996.
     
        [RFC1905] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
                  "Protocol Operations for Version 2 of the Simple Network
                  Management Protocol (SNMPv2)", RFC 1905, January 1996.
     
        [RFC1906] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
                  "Transport Mappings for Version 2 of the Simple Network
                  Management Protocol (SNMPv2)", RFC 1906, January 1996.
     
        [RFC2026] Bradner, S., "The Internet Standards Process - Revision
                  3", BCP 9, RFC 2026, October 1996.
     
        [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
                  Requirement Levels", BCP 14, RFC 2119, March 1997.
     
        [RFC2570] Case, J., Mundy, R., Partain, D., and B. Stewart,
                  "Introduction to Version 3 of the Internet-standard
     
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                  Network Management Framework", RFC 2570, April 1999.
     
        [RFC2571] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture
                  for Describing SNMP Management Frameworks", RFC 2571, April
                  1999.
     
        [RFC2572] Case, J., Harrington D., Presuhn R. and B. Wijnen,
                  "Message Processing and Dispatching for the Simple Network
                  Management Protocol (SNMP)", RFC 2572, April 1999.
     
        [RFC2573] Levi, D., Meyer, P. and B. Stewart, "SNMP Applications",
                  RFC 2573, April 1999.
     
        [RFC2574] Blumenthal, U. and B. Wijnen, "User-based Security Model
                  (USM) for version 3 of the Simple Network Management
                  Protocol (SNMPv3)", RFC 2574, April 1999.
     
        [RFC2575] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based
                  Access Control Model (VACM) for the Simple Network
                  Management Protocol (SNMP)", RFC 2575, April 1999.
     
        [RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
                  Rose, M. and S. Waldbusser, "Structure of Management
                  Information Version 2 (SMIv2)", STD 58, RFC 2578, April
                  1999.
     
        [RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
                  Rose, M. and S. Waldbusser, "Textual Conventions for
                  SMIv2", STD 58, RFC 2579, April 1999.
     
        [RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
                  Rose, M. and S. Waldbusser, "Conformance Statements for
                  SMIv2", RFC 2580, STD 58, April 1999.
     
        [RFC2669] StJohns, M. , "Cable Device Management Information Base
                  for DOCSIS Compliant Cable Modems and Cable Modem
                  Termination Systems", RFC2669, August 1999.
     
        [RFC2819] Waldbusser, S., "Remote Network Monitoring Management
                  Information Base", STD 59, RFC 2819, May 2000.
     
        [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
                  MIB using SMIv2", RFC 2863, June 2000.
     
        [RFC3414] Blumenthal, U. and B. Wijnen, "User-based Security Model
                  (USM) for version 3 of the Simple Network Management
                  Protocol (SNMPv3)", STD 62, RFC 3414, December 2002.
     
        [RFC3415] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based
                  Access Control Model (VACM) for the Simple Network
                  Management Protocol (SNMP)", STD 62, RFC 3415, December
                  2002.
     
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        [1] Woundy, R., "Baseline Privacy Interface Management
            Information Base for DOCSIS Compliant Cable Modems
            and Cable Modem Termination Systems", RFC3083, March 2001.
     
        [2] "Data-Over-Cable Service Interface Specifications: Cable Modem
            Radio Frequency Interface Specification SP-RFI-I06-010829",
            DOCSIS, August 2001, http://www.cablemodem.com.
     
        [3] "Data-Over-Cable Service Interface Specifications: Cable
            Modem Radio Frequency Interface Specification SP-RFIv1.1-I09-
            020830", DOCSIS, August 2002, http://www.cablemodem.com.
     
        [4] "Data-Over-Cable Service Interface Specifications: Radio
            Frequency Interface Specification SP-RFIv2.0-I04-030730",
            DOCSIS 2.0 July 2003.
     
        [5] "Data-Over-Cable Service Interface Specifications: Operations
            Support System Interface Specification SP-OSSIv2.0-I04-030730",
            DOCSIS 2.0 July 2003.
     
        [6] Proakis, John G., "Digital Communications, 3rd Edition",
            McGraw-Hill, New York, New York, 1995, ISBN 0-07-051726-6
     
        [7] "Transmission Systems for Interactive Cable Television
            Services, Annex B", J.112, International Telecommunications
            Union, March 1998.
     
        [8] "Document for the certification of EuroDOCSIS CMs and CMTSs,
            Version 3.3", EuroDOCSIS, February 2000.
     
     
        [9] "Adapted MIB-definitions and a clarification for MPEG-related
            issues for EuroDOCSIS cable modem systems v1.01", tComLabs,
            May 2000.
     
     
     8.  Informative References
     
        [RFC2670] StJohns, M., "Radio Frequency (RF) Interface Management
                  Information Base for MCNS/DOCSIS compliant RF interfaces",
                  RFC 2670, August 1999.
     
        [RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
                  "Introduction and Applicability Statements for
                  Internet-Standard Management Framework", RFC 3410,
                  December 2002.
     
     
     9.  Security Considerations
     
        This MIB relates to a system which will provide metropolitan public
     
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        internet access.  As such, improper manipulation of the objects
        represented by this MIB may result in denial of service to a large
        number of end-users.  In addition, manipulation of the
        docsIfCmServiceQosProfile, docsIfCmtsServiceQosProfile, and the
        elements of docsIfQosProfileTable and docsIfCmtsModulationTable may
        allow an end-user to improve their service response or diminish
        other subscriber's service response.
     
        There are a number of management objects defined in this MIB that
        have a MAX-ACCESS clause of read-write or read-create.  Such
        objects may be considered sensitive or vulnerable in some network
        environments.  The support for SET operations in a non-secure
        environment without proper protection can have a negative effect on
        network operations.
     
        SNMPv1 by itself is not a secure environment.  Even if the network
        itself is secure (for example by using IPSec), even then, there is
        no control as to who on the secure network is allowed to access and
        GET/SET (read/change/create/delete) the objects in this MIB.
     
        It is recommended that the implementers consider the security
        features as provided by the SNMPv3 framework.  Specifically, the
        use of the User-based Security Model RFC 2574 [12] and the View-
        based Access Control Model RFC 2575 [15] is recommended.
     
        It is then a customer/user responsibility to ensure that the SNMP
        entity giving access to an instance of this MIB, is properly
        configured to give access to the objects only to those principals
        (users) that have legitimate rights to indeed GET or SET
        (change/create/delete) them.
     
     
     10.  Changes from RFC2670
     
        Upstream now separated into 'physical interfaces' and 'logical
        channels'. An instance of the docsIfUpstreamChannelTable exists
        for each 'logical channel'. The IANA ifType for 'logical channels'
        is 205. The IANA ifType for 'physical interfaces' remains at 129.
     
        Object docsIfDownChannelAnnex added to
        docsIfDownstreamChannelTable. This object originated in the
        EuroDocsis specifications.
     
        Nine new objects added to the docsIfUpstreamChannelTable. One
        describes the channel type in use. Four are specific S-CDMA
        parameters. Three are used in the creation of a temporary
        inactive upstream row so the S-CDMA parameters may be manipulated
        'offline'. One object has been added to enable/disable
        pre-equalization on the upstream channel.
     
        Object docsIfQosProfMaxTransmitBurst has been added to the
        docsIfQosProfileTable to replace deprecated object
     
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        docsIfQosProfMaxTxBurst. This fixes a range error caused by switch
        to recording as bytes instead of minislots.
     
        Three new 64 bit counters added to the docsIfSignalQualityTable to
        extend the capacity of existing 32 bit counters.
     
        A new base object docsIfDocsisBaseCapability has been added which
        mirrors the functionality of the docsifExt mib object
        docsIfDocsisCapability, extended to include Docsis 2.0.
     
        Three new objects added to the docsIfCmStatusTable. One indicates
        the current modulation type. The second mirrors the functionality
        of the docsIfExt object docsIfDocsisOperMode, while clarifying that
        it applies to the COS/QOS mode used by the device. The third new
        object indicates equalization data at the CM.
     
        Two new 64 bit counters added to the docsIfCmServiceTable to extend
        the capacity of existing 32 bit counters.
     
        Seven new objects added to the docsIfCmtsCmStatusTable. Three are
        64 bit counters, two add ipv6 capability, and one indicates the CM
        modulation type in use. The remaining object mirrors the
        functionality of the docsIfExt object docsIfCmtsCmStatusDocsisMode,
        while clarifying that it applies to the COS/QOS mode used by the
        device.
     
        One object added to the docsIfCmtsServiceTable to fix a range error
        in an existing object, that has been deprecated.
     
        Eight new objects added to the docsIfCmtsModulationTable. Seven of
        these describe ATDMA/S-CDMA channel parameters, while the other
        describes modulation attributes common to all modulation types.
     
        One new object and three new tables added to provide CMTS upstream
        and downstream channel utilization data.
     
        Enumerated values for object docsIfDownChannelInterleave have been
        expanded to include a EuroDocsis value.
     
        Enumerated values for object docsIfCmtsModIntervalUsageCode have
        been expanded to include new Docsis 2.0 values.
     
        Enumerated values for object docsIfCmtsModType have been expanded
        to include new Docsis 2.0 values.
     
        Compliance statements have been updated to reflect new objects and
        to describe EuroDocsis specific implementation features.
     
        The descriptions of objects docsIfCmtsStatusInvalidRegReqs and
        docsIfCmtsStatusFailedRegReqs have been clarified.
     
        Separated references into normative and informative.
     
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     11.  Conflict Resolution with docsIfExt MIB
     
        The docsIfExt MIB originated as an engineering change notification
        (ECN) to the Docsis 1.1 specifications, and consisted of three
        objects - two for CM implementation and one for the CMTS. These
        three objects have been incorporated into this new version of the
        RF MIB, and have been assigned new object identifiers.
     
        The following process has been used to accomplish the deprecation
        of the docsIfExt MIB:
     
        1) Created Docsis ECNs (oss2-n-02016/oss-n-02017) that required
        Docsis 1.1/2.0 implementations to support the new location of the
        three docsIfExt objects in the RF MIB.
     
        2) The same ECNs updated the docsCableDeviceTrap MIB to reference
        the new location of the three docsIfExt objects, and deprecated
        the former references.
     
        3) The same ECNs deprecated the docsIfExt MIB.
     
        Following these steps, the state of affairs is:
        a) Docsis 1.1 MUST support new RF MIB docsIfExt objects.
        b) Docsis 1.1 MAY support remaining RF MIB 2.0 objects.
        c) Docsis 1.1 MAY support former docsIfExt MIB objects.
        d) Docsis 2.0 MUST support all new RF MIB objects.
        e) Docsis 2.0 MUST NOT support former docsIfExt MIB objects.
     
     
     12.  Intellectual Property
     
        The IETF takes no position regarding the validity or scope of any
        intellectual property or other rights that might be claimed to
        pertain to the implementation or use of the technology described in
        this document or the extent to which any license under such rights
        might or might not be available; neither does it represent that it
        has made any effort to identify any such rights.  Information on the
        IETF's procedures with respect to rights in standards-track and
        standards-related documentation can be found in BCP-11.  Copies of
        claims of rights made available for publication and any assurances
        of licenses to be made available, or the result of an attempt made
        to obtain a general license or permission for the use of such
        proprietary rights by implementers or users of this specification
        can be obtained from the IETF Secretariat.
     
        The IETF invites any interested party to bring to its attention any
        copyrights, patents or patent applications, or other proprietary
        rights that may cover technology that may be required to practice
        this standard.  Please address the information to the IETF Executive
        Director.
     
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     13.  Author's Address
     
        David Raftus
        Terayon Canada Ltd
        340 Terry Fox Drive, Suite 202
        Ottawa Ontario
        Canada
        Phone:  +1 613 592 1052 ext 222
        E-mail: david.raftus@terayon.com
     
     14.  Full Copyright Statement
     
        Copyright (C) The Internet Society (2003).  All Rights Reserved.
     
        This document and translations of it may be copied and furnished to
        others, and derivative works that comment on or otherwise explain it
        or assist in its implementation may be prepared, copied, published
        and distributed, in whole or in part, without restriction of any
        kind, provided that the above copyright notice and this paragraph
        are included on all such copies and derivative works.  However, this
        document itself may not be modified in any way, such as by removing
        the copyright notice or references to the Internet Society or other
        Internet organizations, except as needed for the purpose of
        developing Internet standards in which case the procedures for
        copyrights defined in the Internet Standards process must be
        followed, or as required to translate it into languages other than
        English.
     
        The limited permissions granted above are perpetual and will not be
        revoked by the Internet Society or its successors or assigns.
     
        This document and the information contained herein is provided on an
        "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
        TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
        BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
        HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
        MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
     
        Funding for the RFC Editor function is currently provided by the
        Internet Society.
     
     
     
     
     
     
     
     
     
     
     
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