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Versions: 00 draft-ietf-tictoc-ptp-mib

TICTOC Working Group                                 Vinay Shankarkumar
INTERNET DRAFT                                          Laurent Montini
Intended status: Standards Track                          Cisco Systems

                                                              Tim Frost
                                                              Greg Dowd
                                                            Symmetricom

Expires: September 7, 2011                                March 7, 2011




                 Precision Time Protocol Version 2 (PTPv2)
                        Management Information Base
                     draft-vinay-tictoc-ptp-mib-00.txt


Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with
   the provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 7, 2011.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents


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   carefully, as they describe your rights and restrictions with
   respect to this document.  Code Components extracted from this
   document must include Simplified BSD License text as described in
   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in TCP/IP-based internets.
   In particular, it defines objects for managing networks using
   Precision Time Protocol.

   This memo specifies a MIB module in a manner that is both compliant
   to the SNMPv2 SMI, and semantically identical to the peer SNMPv1
   definitions.

Table of Contents

   1. Introduction...................................................2
      1.1. Change Log................................................3
   2. The SNMP Management Framework..................................3
   3. Overview.......................................................4
   4. Structure of MIB Module........................................4
      4.1. Textual Conventions......................................12
      4.2. The Notifications Subtree................................21
      4.3. The Table Structures.....................................27
   5. Relationship to the Interface MIB.............................63
   6. MIB modules required for IMPORTS..............................64
   7. Security Considerations.......................................64
   8. IANA Considerations...........................................65
   9. References....................................................65
      9.1. Normative References.....................................65
      9.2. Informative References...................................65
   10. Acknowledgements.............................................66
   11. Author's Addresses...........................................67

1. Introduction

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet Community.
   In particular, it describes managed objects used for managing PTP
   devices including the ordinary clock, transparent clock, boundary
   clocks. It is envisioned this MIB will complement other managed
   objects defined to monitor, measure the performance of the PTP
   devices and telecom clocks. Those objects are considered out of
   scope for the current draft.




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1.1. Change Log

   This section tracks changes made to the revisions of the Internet
   Drafts of this document.  It will be *deleted* when the document is
   published as an RFC.   This section tracks changes made to the
   visions of the Internet Drafts of this document.  It will be
   *deleted* when the document is published as an RFC.

2. The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o  An overall architecture, described in [RFC 2271].

   o  Mechanisms for describing and naming objects and events for the
      purpose of management.  The first version of this Structure of
      Management Information (SMI) is called SMIv1 and described in
      [RFC 1155], [RFC 1212] and [RFC 1215].
      The second version, called SMIv2, is described in [RFC 2578],
      [RFC 2579] and [RFC 2580]

   o  Message protocols for transferring management information.  The
      first version of the SNMP message protocol is called SNMPv1 and
      described in [RFC 1157].  A second version of the SNMP message
      protocol, which is not an Internet standards track protocol, is
      called SNMPv2c and described in [RFC 1901] and [RFC 1905].  The
      third version of the message protocol is called SNMPv3 and
      described in [RFC 1906], [RFC 2572] and [RFC 2574].

   o  Protocol operations for accessing management information.  The
      first set of protocol operations and associated PDU formats is
      described in [RFC 1157].  A second set of protocol operations and
      associated PDU formats is described in [RFC 1905].

   o  A set of fundamental applications described in [RFC 2573] and the
      view-based access control mechanism described in [RFC 2575].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This memo specifies a MIB module that is compliant to the SMIv2.  A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (e.g., use of Counter64).  Some machine
   readable information in SMIv2 will be converted into textual
   descriptions in SMIv1 during the translation process.  However, this


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   loss of machine readable information is not considered to change the
   semantics of the MIB.

3. Overview

   The objects defined in this MIB are to be used when describing
   Precision Time Protocol (PTPv2).

4. Structure of MIB Module

   IETF-PTP-MIB DEFINITIONS ::= BEGIN


   ietfPtpMIB  MODULE-IDENTITY
       LAST-UPDATED    "201101280000Z"
       ORGANIZATION    "TICTOC Working Group"
       CONTACT-INFO

           "WG Email: tictoc@ietf.org

           Vinay Shankarkumar
           Cisco Systems,
           Email: vinays@cisco.com

           Laurent Montini,
           Cisco Systems,
           Email: lmontini@cisco.com

           Tim Frost,
           Symmetricom Inc.,
           Email: tfrost@symmetricom.com

           Greg Dowd,
           Symmetricom Inc.,
           Email: gdowd@symmetricom.com"

       DESCRIPTION
           "The MIB module for PTPv2 (IEEE (TM) 1588 - 2008)

           Overview of PTPv2 (IEEE (TM) 1588-2008)

           [IEEE1588-2008] defines a protocol enabling precise
           synchronization of clocks in measurement and control systems
           implemented with packet-based networks, the Precision Time
           protocol version 2 (PTPv2). This MIB does not address the
           standard IEEE(TM) 1588 (2002) and PTPv1. The protocol is
           applicable to network element communicating using IP. The
           protocol enables heterogeneous systems that include clocks
           of various inherent precision, resolution, and stability to


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           synchronize to a grandmaster clock.

           The protocol supports system-wide synchronization accuracy
           in the sub-microsecond range with minimal network and local
           clock computing resources. [IEEE1588-2008] uses UDP/IP or
           Ethernet and can be adapted to other mapping. It includes
           formal mechanisms for message extensions, higher sampling
           rates, correction for asymmetry, a clock type to reduce
           error accumulation in large topologies, and specifications
           on how to incorporate the resulting additional data into the
           synchronization protocol. The [IEEE1588-2008] defines
           conformance and management capability also.

           MIB description

           This MIB is to support the Precision Time Protocol version 2
           (PTPv2, hereafter designated as PTP) features of network
           Element System devices.

           Acronyms:
                    ARB       arbitrary
                    BMC       best master clock
                    CAN       Controller Area Network
                    CP        Communication Profile
                              (according to IEC 61784-1:200710)
                    CPF       Communication Profile Family
                              (according to IEC 61784-1:2007)
                    DS        Differentiated Service
                    E2E       End-to-End
                    E2ETC     End-to-End Transparent Clock
                    EUI       Extended Unique Identifier.
                    FFO       Fractional Frequency Offset
                    GPS       Global Positioning System
                    IANA      Internet Assigned Numbers Authority
                    ICV       Integrity Check Value
                    ID        Identification
                    IPv4      Internet Protocol version 4
                    IPv6      Internet Protocol version 6
                    JD        Julian Date
                    JDN       Julian Day Number
                    MAC       Media Access Control
                              (according to IEEE Std 802.3-2005)
                    MJD       Modified Julian Day
                    NIST      National Institute of Standards and
                              Technology (see http://www.nist.gov)
                    NTP       Network Time Protocol (see [RFC 1305])
                    OUI       Organizational Unique Identifier
                              (allocated by the IEEE)
                    P2P       Peer-to-Peer


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                    P2PTC     Peer-To-Peer Transparent Clock
                    PHY       physical layer
                              (according to IEEE Std 802.3 2005)
                    POSIX     Portable Operating System Interface
                              (see ISO/IEC 9945:2003)
                    PPS       Pulse per Second
                    PTP       Precision Time Protocol
                    SA        Security Associations
                    SNTP      Simple Network Time Protocol
                    SOF       Start of Frame
                    TAI       International Atomic Time
                    TC        Traffic Class
                    TC        Transparent Clock
                    TLV       Type, Length, Value
                              (according to IEEE Std 02.1AB)
                    ToD       Time of Day Synchronization
                    ToS       Type of Service
                    UCMM      UnConnect Message Manager
                    UDP/IP    User Datagram Protocol
                    UTC       Coordinated Universal Time

           References:
           [1]  Precision clock synchronization protocol for networked
           measurement and control systems - IEC 61588 IEEE 1588(tm)
           Edition 2.0 2009-02

           As defined in [IEEE1588-2008]:

           Accuracy:
           The mean of the time or frequency error between the clock
           under test and a perfect reference clock, over an ensemble
           of measurements.  Stability is a measure of how the mean
           varies with respect to variables such as time, temperature,
           and so on.

           The precision is a measure of the deviation of the error
           From the mean.

           Atomic process:
           A process is atomic if the values of all inputs to the
           Process are not permitted to change until all of the results
           of the process are instantiated, and the outputs of the
           process are not visible to other processes until the
           processing of each output is complete.

           Boundary clock:
           A clock that has multiple Precision Time Protocol(PTP) ports
           in a domain and maintains the timescale used in the domain.
           It may serve as the source of time, i.e., be a master clock,


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           and may synchronize to another clock, i.e., be a slave
           clock.

           Clock:
           A node participating in the Precision Time Protocol (PTP)
           that is capable of providing a measurement of the passage of
           time since a defined epoch.

           Domain:
           A logical grouping of clocks that synchronize to each other
           using the protocol, but that are not necessarily
           synchronized to clocks in another domain.

           End-to-end transparent clock:
           A transparent clock that supports the use of the end-to-end
           delay measurement mechanism between slave clocks and the
           master clock.  Each node must measure the residence time of
           PTP event messages and accumulate it in Correction Field.

           Epoch:
           The origin of a timescale.

           Event:
           An abstraction of the mechanism by which signals or
           conditions are generated and represented.

           Foreign master:
           An ordinary or boundary clock sending Announce messages to
           another clock that is not the current master recognized by
           the other clock.

           Grandmaster clock:
           Within a domain, a clock that is the ultimate source of time
           for clock synchronization using the protocol.

           Holdover:
           A clock previously synchronized/syntonized to another clock
           (normally a primary reference or a master clock) but now
           free-running based on its own internal oscillator, whose
           frequency is being adjusted using data acquired while it had
           been synchronized/syntonized to the other clock.  It is said
           to be in holdover or in the holdover mode, as long as it is
           within its accuracy requirements.

           Link:
           A network segment between two Precision Time Protocol ports
           supporting the peer delay mechanism of this standard.  The
           peer delay mechanism is designed to measure the propagation
           time over such a link.


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           Management node:
           A device that configures and monitors clocks.

           Master clock:
           In the context of a single Precision Time Protocol
           communication path, a clock that is the source of time to
           which all other clocks on that path synchronize.

           Message timestamp point:
           A point within a Precision Time Protocol event message
           serving as a reference point in the message.  A timestamp is
           defined by the instant a message timestamp point passes the
           reference plane of a clock.

           Multicast communication:
           A communication model in which each Precision Time Protocol
           message sent from any PTP port is capable of being received
           and processed by all PTP ports on the same PTP communication
           path.

           Node:
           A device that can issue or receive Precision Time Protocol
           communications on a network.

           One-step clock:
           A clock that provides time information using a single event
           message.

           On-pass support:
           Indicates that each node in the synchronization chain from
           master to slave can support IEEE-1588.

           Ordinary clock:
           A clock that has a single Precision Time Protocol port in a
           domain and maintains the timescale used in the domain.  It
           may serve as a source of time, i.e., be a master clock, or
           may synchronize to another clock, i.e., be a slave clock.

           Parent clock:
           The master clock to which a clock is synchronized.

           Peer-to-peer transparent clock:
           A transparent clock that, in addition to providing Precision
           Time Protocol event transit time information, also provides
           corrections for the propagation delay of the link connected
           to the port receiving the PTP event message.  In the
           presence of peer-to-peer transparent clocks, delay
           measurements between slave clocks and the master clock are


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           performed using the peer-to-peer delay measurement
           mechanism.

           Phase change rate:
           The observed rate of change in the measured time with
           respect to the reference time.  The phase change rate is
           equal to the fractional frequency offset between the
           measured frequency and the reference frequency.

           PortNumber:
           An index identifying a specific Precision Time Protocol port
           on a PTP node.

           Primary reference:
           A source of time and or frequency that is traceable to
           international standards.

           Profile:
           The set of allowed Precision Time Protocol features
           applicable to a device.

           Precision Time Protocol communication:
           Information used in the operation of the protocol,
           transmitted in a PTP message over a PTP communication path.

           Precision Time Protocol communication path:
           The signaling path portion of a particular network enabling
           direct communication among ordinary and boundary clocks.

           Precision Time Protocol node:
           PTP ordinary, boundary, or transparent clock or a device
           that generates or parses PTP messages.

           Precision Time Protocol port:
           A logical access point of a clock for PTP communications to
           the communications network.

           Recognized standard time source:
           A recognized standard time source is a source external to
           Precision Time Protocol that provides time and/or frequency
           as appropriate that is traceable to the international
           standards laboratories maintaining clocks that form the
           basis for the International Atomic Time and Universal
           Coordinated Time timescales.  Examples of these are Global
           Positioning System, NTP, and National Institute of Standards
           and Technology (NIST) timeservers.

           Requestor:
           The port implementing the peer-to-peer delay mechanism that


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           initiates the mechanism by sending a Pdelay_Req message.

           Responder:
           The port responding to the receipt of a Pdelay_Req message
           as part of the operation of the peer-to-peer delay
           mechanism.

           Synchronized clocks:
           Two clocks are synchronized to a specified uncertainty if
           they have the same epoch and their measurements of the time
           of a single event at an arbitrary time differ by no more
           than that uncertainty.

           Syntonized clocks:
           Two clocks are syntonized if the duration of the second is
           the same on both, which means the time as measured by each
           advances at the same rate. They may or may not share the
           same epoch.

           Timeout:
           A mechanism for terminating requested activity that, at
           least from the requester's perspective, does not complete
           within the specified time.

           Timescale:
           A linear measure of time from an epoch.

           Traceability:
           A property of the result of a measurement or the value of a
           standard whereby it can be related to stated references,
           usually national or international standards, through an
           unbroken chain of comparisons all having stated
           uncertainties.

           Translation device:
           A boundary clock or, in some cases, a transparent clock that
           translates the protocol messages between regions
           implementing different transport and messaging protocols,
           between different versions of IEEE Std 1588-2008/IEC
           61588:2009, or different Precision Time Protocol profiles.

           Transparent clock:
           A device that measures the time taken for a Precision Time
           Protocol event message to transit the device and provides
           this information to clocks receiving this PTP event message.

           Two-step clock:
           A clock that provides time information using the combination
           of an event message and a subsequent general message.


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           The below table specifies the object formats of the various
           textual conventions used.

           Data type mapping   Textual Convention SYNTAX
           ------------------- ------------------ --------------------
           5.3.2 TimeInterval  ClockTimeInterval  OCTET STRING
                                                  (SIZE(1..255))
           5.3.3 Timestamp     ClockTimestamp     OCTET STRING(SIZE(6))
           5.3.4 ClockIdentity ClockIdentity      OCTET STRING
                                                  (SIZE(1..255))
           5.3.5 PortIdentity  ClockPortNumber    INTEGER(1..65535)
           5.3.7 ClockQuality  ClockQualityClassType

           Simple master-slave hierarchy [1] section 6.6.2.4

             ---------------
             - Ordinary    -
             - Clock(1)    -
             - GrandMaster -
             -------M-------
                    |
                    1
                    |
             -------S-------------------------------
             - Boundary                            -
             - Clock(1)                            -
             --------------M------------------M-----
                           |                  |
                           2                  3
                           |                  |
                      -----S------     -------S------------------
                      - Ordinary -     - Boundary               -
                      - Clock(2) -     - Clock(2)               -
                      ------------     -----M-------------M------
                                            |             |
                                            4             5
                                            |             |
                                       -----S------  -----S------
                                       - Ordinary -  - Ordinary -
                                       - Clock(3) -  - Clock(4) -
                                       ------------  ------------

             Grandmaster

             Boundary Clocks(0-N)   Ordinary Clocks(0-N)
             Ordinary Clocks(0-N)

            Relationship cardinality


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               PTP system 1 : N PTP Clock
               PTP Clock  1 : 1 Domain
               PTP Clock  1 : N PTP Ports
               PTP Port   N : N Physical Port (interface in IF-MIB)

           Transparent clock diagram from section 6.7.1.3 of [1]

                     +----------------------------+
                     |     Boundary clock - 1     |
                     +----------------------------+
                       |                       |
                       |                       |
               +-- A --+                       B
               |                               |
           +---------------------+             |
           |   Ordinary clock - 1|             |
           +---------------------+             |
                                            +----------------------+
           +--------------+                 |      End-to-end      |
           |  Ordinary    |-----------------|  transparent clock-  |
           |  clock 1-1   |                 |       1 - 1          |
           +--------------+                 +----------------------+
                                               |
                                               |
                                               C
                                               |
                                               |
                                            +----------------------+
           +--------------+                 |      End-to-end      |
           |  Ordinary    |-----------------|  transparent clock-  |
           |  clock 1-2   |                 |       1 - 2          |
           +--------------+                 +----------------------+


           The MIB refers to the sections of [IEEE1588-2008]."

4.1. Textual Conventions

   ClockDomainType ::= TEXTUAL-CONVENTION
       DISPLAY-HINT    "d"
       STATUS          current
       DESCRIPTION
           "The Domain is identified by an integer, the domainNumber,
           in the range of 0 to 255. An integer value that is used to
           assign each PTP device to a particular domain. The following
           values define the valid domains. [1] Section 7.1 Domains
           Table 2

                    Value       definition.


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                    ---------   -------------------
                    0           Default domain
                    1           Alternate domain 1
                    2           Alternate domain 2
                    3           Alternate domain 3
                    4 - 127     User-defined domains
                    128 - 255   Reserved"

       REFERENCE       "Section 7.1 Domains and Table 2 of [1]"
       SYNTAX          Unsigned32 (0..255)

   ClockIdentity ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The clock Identity is an 8-octet array and will be
           presented in the form of a character array. The value of the
           ClockIdentity should be taken from the IEEE EUI-64
           individual assigned numbers as indicated in Section
           7.5.2.2.2 of [1].  The EUI-64 address is divided into the
           following fields.

                OUI byte[0-2]
                Extension identifier bytes:[3-7]

           The clock identifier can be constructed from existing EUI-48
           assignments and here is an abbreviated example extracted
           from section 7.5.2.2.2 [1].

                Company EUI-48 = 0xACDE4823456716
                EUI-64 = ACDE48FFFE23456716

           It is important to note the IEEE Registration Authority has
           deprecated the use of MAC-48 in any new design."

       REFERENCE       "Section 7.5.2.2.1 from [1]"
       SYNTAX          OCTET STRING (SIZE (1..255))

   ClockIntervalBase2 ::= TEXTUAL-CONVENTION
       DISPLAY-HINT    "d"
       STATUS          current
       DESCRIPTION
           "The interval included in message types Announce, Sync,
           Delay_Req, and Pdelay_Req as indicated in section 7.7.2.1 of
           [1].

           The mean time interval between successive messages shall be
           represented as the logarithm to the base 2 of this time
           interval measured in seconds on the local clock of the
           device sending the message. The values of these logarithmic


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           attributes shall be selected from integers in the range -128
           to 127 subject to further limits established in an
           applicable PTP profile."

       REFERENCE
           "Section 7.7.2.1 General interval specification of [1]"
       SYNTAX          Integer32 (-128..127)

   ClockMechanismType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The clock type based on whether End to End or peer to peer
           mechanisms are used. The mechanism used to calculate the
           Mean Path Delay as indicated in Table 9 of [IEEE1588-2008].

           Delay mechanism     Value(hex) Specification
           E2E                  01        The port is configured to use
                                          the delay request-response
                                          mechanism.

           P2P                  02        The port is configured to use
                                          the peer delay mechanism.
          DISABLED              FE        The port does not implement
                                          the delay mechanism."

       REFERENCE       "Sections 8.2.5.4.4, 6.6.4 and 7.4.2 of [1]."
       SYNTAX          INTEGER  {
                           e2e(1),
                           p2p(2),
                           disabled(254)
                       }

   ClockInstanceType ::= TEXTUAL-CONVENTION
       DISPLAY-HINT    "d"
       STATUS          current
       DESCRIPTION
           "The instance of the Clock of a given clock type in a given
           domain."
       SYNTAX          Unsigned32 (0..255)

   ClockPortNumber ::= TEXTUAL-CONVENTION
       DISPLAY-HINT    "d"
       STATUS          current
       DESCRIPTION
           "An index identifying a specific Precision Time Protocol
           (PTP) port on a PTP node."

       REFERENCE       "Section 7.5.2.3 Port Number and 5.3.5 of [1]"
       SYNTAX          Unsigned32 (0..65535)


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   ClockPortState ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "This is the value of the current state of the protocol
           engine associated with this port.
           Port state   Value     Description
           --------------------------------------------------------
           initializing   1       In this state a port initializes
                                  its data sets, hardware, and
                                  communication facilities.
           faulty         2       The fault state of the protocol.
           disabled       3       The port shall not place any
                                  messages on its communication path.
           listening      4       The port is waiting for the
                                  announceReceiptTimeout to expire or
                                  to receive an Announce message from
                                  a master.
           preMaster      5       The port shall behave in all respects
                                  as though it were in the MASTER state
                                  except that it shall not place any
                                  messages on its communication path
                                  except for Pdelay_Req, Pdelay_Resp,
                                  Pdelay_Resp_Follow_Up, signaling, or
                                  management messages.
           master         6       The port is behaving as a master
                                  port.
           passive        7       The port shall not place any
                                  messages on its communication path
                                  except for Pdelay_Req, Pdelay_Resp,
                                  Pdelay_Resp_Follow_Up, or signaling
                                  messages, or management messages
                                  that are a required response to
                                  another management message
           uncalibrated   8       The local port is preparing to
                                  synchronize to the master port.
           slave          9       The port is synchronizing to the
                                  selected master port."

       REFERENCE       "Section 8.2.5.3.1 portState and 9.2.5 of [1]"
       SYNTAX          INTEGER  {
                           initializing(1),
                           faulty(2),
                           disabled(3),
                           listening(4),
                           preMaster(5),
                           master(6),
                           passive(7),
                           uncalibrated(8),


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                           slave(9)
                       }

   ClockProfileType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "Clock Profile used. From [1] section 3.1.30, Profile is the
           set of allowed Precision Time Protocol (PTP) features
           applicable to a device."

       REFERENCE       "Section 3.1.30 and 19.3 PTP profiles of [1]"
       SYNTAX          INTEGER  {
                           default(1),
                           telecom(2),
                           vendorspecific(3)
                       }

   ClockQualityAccuracyType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The ClockQuality as specified in section 5.3.7, 7.6.2.5 and
           Table 6 of [1].

           The following values are not represented in the enumerated
           values.

                    0x01-0x1F Reserved
                    0x32-0x7F Reserved

           It is important to note that section 7.1.1 [RFC 2578]
           allows for gaps and enumerate values to start with zero when
           indicated by the protocol."

       REFERENCE       "Section 5.3.7, 7.6.2.5 and Table 6 of [1]"
       SYNTAX          INTEGER  {
                           reserved00(1),       -- 0
                           nanoSecond25(32),    -- 0x20
                           nanoSecond100(33),   -- 0x21
                           nanoSecond250(34),   -- 0x22
                           microSec1(35),       -- 0x23
                           microSec2dot5(36),   -- 0x24
                           microSec10(37),      -- 0x25
                           microSec25(38),      -- 0x26
                           microSec100(39),     -- 0x27
                           microSec250(40),     -- 0x28
                           milliSec1(41),       -- 0x29
                           milliSec2dot5(42),   -- 0x2A
                           milliSec10(43),      -- 0x2B
                           milliSec25(44),      -- 0x2C


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                           milliSec100(45),     -- 0x2D
                           milliSec250(46),     -- 0x2E
                           second1(47),         -- 0x2F
                           second10(48),        -- 0x30
                           secondGreater10(49), -- 0x31
                           unknown(254),        -- 0xFE
                           reserved255(255)     -- 0xFF
                       }

   ClockQualityClassType ::= TEXTUAL-CONVENTION
       DISPLAY-HINT    "d"
       STATUS          current
       DESCRIPTION
           "The ClockQuality as specified in section 5.3.7, 7.6.2.4 and
           Table 5 of [1].

            Value   Description
            -----------------------------------------------------------
                 0  Reserved to enable compatibility with future
                    versions.
               1-5  Reserved
                 6  Shall designate a clock that is synchronized
                    to a primary reference time source.  The
                    timescale distributed shall be PTP.  A
                    clockClass 6 clock shall not be a slave to
                    another clock in the domain.
                 7  Shall designate a clock that has previously
                    been designated as clockClass 6 but that has
                    lost the ability to synchronize to a primary
                    reference time source and is in holdover mode
                    and within holdover specifications. The
                    timescale distributed shall be PTP.  A
                    clockClass 7 clock shall not be a slave to
                    another clock in the domain.
                 8  Reserved.
              9-10  Reserved to enable compatibility with future
                    versions.
             11-12  Reserved.
                13  Shall designate a clock that is synchronized
                    to an application-specific source of time.
                    The timescale distributed shall be ARB.  A
                    clockClass 13 clock shall not be a slave to
                    another clock in the domain.
                14  Shall designate a clock that has previously
                    been designated as clockClass 13 but that
                    has lost the ability to synchronize to an
                    application-specific source of time and is
                    in holdover mode and within holdover
                    specifications. The timescale distributed


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                    shall be ARB.  A clockClass 14 clock shall
                    not be a slave to another clock in the domain.
             15-51  Reserved.
                52  Degradation alternative A for a clock of
                    clockClass 7 that is not within holdover
                    specification.  A clock of clockClass 52
                    shall not be a slave to another clock in
                    the domain.
             53-57  Reserved.
                58  Degradation alternative A for a clock of
                    clockClass 14 that is not within holdover
                    specification. A clock of clockClass 58 shall
                    not be a slave to another clock in the domain.
             59-67  Reserved.
            68-122  For use by alternate PTP profiles.
           123-127  Reserved.
           128-132  Reserved.
           133-170  For use by alternate PTP profiles.
           171-186  Reserved.
               187  Degradation alternative B for a clock of
                    clockClass 7 that is not within holdover
                    specification. A clock of clockClass 187 may
                    be a slave to another clock in the domain.
           188-192  Reserved.
               193  Degradation alternative B for a clock of
                    clockClass 14 that is not within holdover
                    specification. A clock of clockClass 193 may
                    be a slave to another clock in the domain.
           194-215  Reserved.
           216-232  For use by alternate PTP profiles.
           233-247  Reserved.
               248  Default. This clockClass shall be used if
                    none of the other clockClass definitions apply.
           249-250  Reserved.
               251  Reserved for ver. 1 compatibility; see Clause 18.
           252-254  Reserved.
               255  Shall be the clockClass of a slave-only clock;
                    see 9.2.2."

       REFERENCE    "section 5.3.7, 7.6.2.4 and Table 5 of [1]."
       SYNTAX       Unsigned32 (0..255)

   ClockRoleType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The Clock Role. The protocol generates a Master Slave
           relationship among the clocks in the system.

           Clock Role      Value     Description


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           ------------------------------------------------------------
           Master clock      1       A clock that is the source of
                                     time to which all other clocks on
                                     that path synchronize.

           Slave clock       2       A clock which synchronizes to
                                     another clock (master)."
       SYNTAX          INTEGER  {
                           master(1),
                           slave(2)
                       }

   ClockStateType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The clock state returned by PTP engine.

           Clock State       Value Description
           ------------------------------------------------------------
           Freerun state       1   Applies to a slave device that is
                                   not locked to a master. This is the
                                   initial state a slave starts out
                                   with when it is not getting any PTP
                                   packets from the master or because
                                   of some other input error (erroneous
                                   packets, etc).

           Holdover state      2   In this state the slave device is
                                   locked to a master but communication
                                   with the master is lost or the
                                   timestamps in the ptp packets are
                                   incorrect. But since the slave was
                                   locked to the master, it can run
                                   with the same accuracy for some
                                   time. The slave can continue to
                                   operate in this state for some time.
                                   If communication with the master is
                                   not restored for a while, the device
                                   is moved to the FREERUN state.

           Acquiring state     3   The slave device is receiving
                                   packets from a master and is trying
                                   to acquire a clock.

           Freq_locked state   4   The slave device is locked to the
                                   master with respect to frequency,
                                   but not phase aligned

           Phase_aligned state 5   The slave device is locked to the


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                                   master with respect to frequency and
                                   phase."

       SYNTAX          INTEGER  {
                           freerun(1),
                           holdover(2),
                           acquiring(3),
                           frequencyLocked(4),
                           phaseAligned(5)
                       }

   ClockTimeSourceType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The ClockQuality as specified in section 5.3.7, 7.6.2.6 and
           Table 7 of [1].

           The following values are not represented in the enumerated
           values.

           0xF0-0xFE  For use by alternate PTP profiles
           0xFF       Reserved

           It is important to note that section 7.1.1 [RFC 2578]
           allows for gaps and enumerate values to start with zero when
           indicated by the protocol."

       REFERENCE       "section 5.3.7, 7.6.2.6 and Table 7 of [1]."
       SYNTAX          INTEGER  {
                           atomicClock(16), -- 0x10
                           gps(32), -- 0x20
                           terrestrialRadio(48), -- 0x22
                           ptp(64), -- 0x40
                           ntp(80), -- 0x50
                           handSet(96), -- 0x60
                           other(144), -- 0x90
                           internalOsillator(160) -- 0xA0
                       }

   ClockTimeInterval ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "This textual convention corresponds to the TimeInterval
           structure indicated in section 5.3.2 of [1]. It will be
           presented in the form of a character array.

           The TimeInterval type represents time intervals.

                struct TimeInterval


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                {
                     Integer64 scaledNanoseconds;
                };

           The scaledNanoseconds member is the time interval expressed
           in units of nanoseconds and multiplied by 2**16.

           Positive or negative time intervals outside the maximum
           range of this data type shall be encoded as the largest
           positive and negative values of the data type, respectively.

           For example, 2.5 ns is expressed as 0000 0000 0002 8000 in
           Base16."

       REFERENCE
           "Section 5.3.2 and section 7.7.2.1 Timer interval
           specification of [1]"
       SYNTAX          OCTET STRING (SIZE (1..255))

   ClockTxModeType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "Transmission mode.

           unicast. Using unicast communication channel.

           multicast. Using Multicast communication channel.

           multicast-mix. Using multicast-unicast comm. channel"
       SYNTAX          INTEGER  {
                           unicast(1),
                           multicast(2),
                           multicastmix(3)
                       }

   ClockType ::= TEXTUAL-CONVENTION
       STATUS          current
       DESCRIPTION
           "The clock types as defined in the MIB module description."

       REFERENCE       "section 6.5.1 of [1]."
       SYNTAX          INTEGER  {
                           ordinaryClock(1),
                           boundaryClock(2),
                           transparentClock(3),
                           boundaryNode(4)
                       }
4.2. The Notifications Subtree



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   ietfPtpMIB Notifs  OBJECT IDENTIFIER
       ::= { ietfPtpMIB  0 }

   ietfPtpMIB Objects  OBJECT IDENTIFIER
       ::= { ietfPtpMIB  1 }

   ietfPtpMIB Conformance  OBJECT IDENTIFIER
       ::= { ietfPtpMIB  2 }

   ietfPtpMIB SystemInfo  OBJECT IDENTIFIER
       ::= { ietfPtpMIB Objects 1 }

   -- Conformance Information Definition

   ietfPtpMIB Compliances  OBJECT IDENTIFIER
       ::= { ietfPtpMIB Conformance 1 }

   ietfPtpMIB Groups  OBJECT IDENTIFIER
       ::= { ietfPtpMIB Conformance 2 }

   ietfPtpMIB Compliances1 MODULE-COMPLIANCE
       STATUS          current
       DESCRIPTION
           "Compliance statement for agents that provide read-only
           support for IETF-PTP-MIB. Such devices can only be monitored
           using this MIB module.

           The Module is implemented with support for read-only. In
           other words, only monitoring is available by implementing
           this MODULE-COMPLIANCE."
       MODULE          -- this module
       MANDATORY-GROUPS { ietfPtpMIB SystemInfoGroup }
       ::= { ietfPtpMIB Compliances 1 }

   ietfPtpMIB Compliances2 MODULE-COMPLIANCE
       STATUS          current
       DESCRIPTION
           "Compliance statement for agents that provide read-only
           support for IETF-PTP-MIB. Such devices can only be monitored
           using this MIB module.

           The Module is implemented with support for read-only. In
           other words, only monitoring is available by implementing
           this MODULE-COMPLIANCE."
       MODULE          -- this module
       MANDATORY-GROUPS {
                           ietfPtpMIB ClockCurrentDSGroup,
                           ietfPtpMIB ClockParentDSGroup,
                           ietfPtpMIB ClockDefaultDSGroup,


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                           ietfPtpMIB ClockRunningGroup,
                           ietfPtpMIB ClockTimepropertiesGroup
                       }
       ::= { ietfPtpMIB Compliances 2 }

   ietfPtpMIB Compliances3 MODULE-COMPLIANCE
       STATUS          current
       DESCRIPTION
           "Compliance statement for agents that provide read-only
           support for IETF-PTP-MIB. Such devices can only be monitored
           using this MIB module.

           The Module is implemented with support for read-only. In
           other words, only monitoring is available by implementing
           this MODULE-COMPLIANCE."
       MODULE          -- this module
       MANDATORY-GROUPS {
                           ietfPtpMIB ClockPortGroup,
                           ietfPtpMIB ClockPortDSGroup,
                           ietfPtpMIB ClockPortRunningGroup,
                           ietfPtpMIB ClockPortAssociateGroup
                       }
       ::= { ietfPtpMIB Compliances 3 }

   ietfPtpMIB Compliances4 MODULE-COMPLIANCE
       STATUS          current
       DESCRIPTION
           "Compliance statement for agents that provide read-only
           support for IETF-PTP-MIB. Such devices can only be monitored
           using this MIB module.

           The Module is implemented with support for read-only. In
           other words, only monitoring is available by implementing
           this MODULE-COMPLIANCE."
       MODULE          -- this module
       MANDATORY-GROUPS {
                           ietfPtpMIB ClockTranparentDSGroup,
                           ietfPtpMIB ClockPortTransDSGroup
                       }
       ::= { ietfPtpMIB Compliances 4 }

   ietfPtpMIB SystemInfoGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpSystemDomainTotals,
                           ietfptpDomainClockPortsTotal,
                           ietfptpSystemProfile

                       }
       STATUS          current


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       DESCRIPTION
           "Group which aggregates objects describing system-wide
           information"
       ::= { ietfPtpMIB Groups 1 }

   ietfPtpMIB ClockCurrentDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockCurrentDSStepsRemoved,
                           ietfptpClockCurrentDSOffsetFromMaster,
                           ietfptpClockCurrentDSMeanPathDelay
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP Current
           Dataset information"
       ::= { ietfPtpMIB Groups 2 }

   ietfPtpMIB ClockParentDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockParentDSParentPortIdentity,
                           ietfptpClockParentDSParentStats,
                           ietfptpClockParentDSOffset,
                           ietfptpClockParentDSClockPhChRate,
                           ietfptpClockParentDSGMClockIdentity,
                           ietfptpClockParentDSGMClockPriority1,
                           ietfptpClockParentDSGMClockPriority2,
                           ietfptpClockParentDSGMClockQualityClass,
                           ietfptpClockParentDSGMClockQualityAccuracy,
                           ietfptpClockParentDSGMClockQualityOffset
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP Parent
           Dataset information"
       ::= { ietfPtpMIB Groups 3 }

   ietfPtpMIB ClockDefaultDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockDefaultDSTwoStepFlag,
                           ietfptpClockDefaultDSClockIdentity,
                           ietfptpClockDefaultDSPriority1,
                           ietfptpClockDefaultDSPriority2,
                           ietfptpClockDefaultDSSlaveOnly,
                           ietfptpClockDefaultDSQualityClass,
                           ietfptpClockDefaultDSQualityAccuracy,
                           ietfptpClockDefaultDSQualityOffset
                       }
       STATUS          current
       DESCRIPTION


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           "Group which aggregates objects describing PTP Default
           Dataset information"
       ::= { ietfPtpMIB Groups 4 }

   ietfPtpMIB ClockRunningGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockRunningState,
                           ietfptpClockRunningPacketsSent,
                           ietfptpClockRunningPacketsReceived
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP running state
           information"
       ::= { ietfPtpMIB Groups 5 }

   ietfPtpMIB ClockTimepropertiesGroup OBJECT-GROUP
       OBJECTS         {

   ietfptpClockTimePropertiesDSCurrentUTCOffsetValid,

   ietfptpClockTimePropertiesDSCurrentUTCOffset,
                           ietfptpClockTimePropertiesDSLeap59,
                           ietfptpClockTimePropertiesDSLeap61,
                           ietfptpClockTimePropertiesDSTimeTraceable,
                           ietfptpClockTimePropertiesDSFreqTraceable,
                           ietfptpClockTimePropertiesDSPTPTimescale,
                           ietfptpClockTimePropertiesDSSource
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP Time
           Properties information"
       ::= { ietfPtpMIB Groups 6 }

   ietfPtpMIB ClockTranparentDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockTransDefaultDSClockIdentity,
                           ietfptpClockTransDefaultDSNumOfPorts,
                           ietfptpClockTransDefaultDSDelay,
                           ietfptpClockTransDefaultDSPrimaryDomain
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP Transparent
           Dataset information"
       ::= { ietfPtpMIB Groups 7 }

   ietfPtpMIB ClockPortGroup OBJECT-GROUP


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       OBJECTS         {
                           ietfptpClockPortName,
                           ietfptpClockPortSyncOneStep,
                           ietfptpClockPortCurrentPeerAddress,
                           ietfptpClockPortNumOfAssociatedPorts,
                           ietfptpClockPortCurrentPeerAddressType,
                           ietfptpClockPortRole
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing information for a
           given PTP Port."
       ::= { ietfPtpMIB Groups 8 }

   ietfPtpMIB ClockPortDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockPortDSName,
                           ietfptpClockPortDSPortIdentity,
                           ietfptpClockPortDSAnnouncementInterval,
                           ietfptpClockPortDSAnnounceRctTimeout,
                           ietfptpClockPortDSSyncInterval,
                           ietfptpClockPortDSMinDelayReqInterval,
                           ietfptpClockPortDSPeerDelayReqInterval,
                           ietfptpClockPortDSDelayMech,
                           ietfptpClockPortDSPeerMeanPathDelay,
                           ietfptpClockPortDSGrantDuration,
                           ietfptpClockPortDSPTPVersion
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP Port Dataset
           information"
       ::= { ietfPtpMIB Groups 9 }

   ietfPtpMIB ClockPortRunningGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockPortRunningName,
                           ietfptpClockPortRunningState,
                           ietfptpClockPortRunningRole,
                           ietfptpClockPortRunningInterfaceIndex,
                           ietfptpClockPortRunningIPversion,
                           ietfptpClockPortRunningEncapsulationType,
                           ietfptpClockPortRunningTxMode,
                           ietfptpClockPortRunningRxMode,
                           ietfptpClockPortRunningPacketsReceived,
                           ietfptpClockPortRunningPacketsSent
                       }
       STATUS          current
       DESCRIPTION


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           "Group which aggregates objects describing PTP running
           interface information"
       ::= { ietfPtpMIB Groups 10 }

   ietfPtpMIB ClockPortTransDSGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockPortTransDSPortIdentity,
                           ietfptpClockPortTransDSlogMinPdelayReqInt,
                           ietfptpClockPortTransDSFaultyFlag,
                           ietfptpClockPortTransDSPeerMeanPathDelay
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing PTP TransparentDS
           Dataset information"
       ::= { ietfPtpMIB Groups 11 }

   ietfPtpMIB ClockPortAssociateGroup OBJECT-GROUP
       OBJECTS         {
                           ietfptpClockPortAssociatePacketsSent,
                           ietfptpClockPortAssociatePacketsReceived,
                           ietfptpClockPortAssociateAddress,
                           ietfptpClockPortAssociateAddressType,
                           ietfptpClockPortAssociateInErrors,
                           ietfptpClockPortAssociateOutErrors
                       }
       STATUS          current
       DESCRIPTION
           "Group which aggregates objects describing information on
           peer PTP ports for a given PTP clock-port."
       ::= { ietfPtpMIB Groups 12 }

   ietfPtpMIB ClockInfo  OBJECT IDENTIFIER
       ::= { ietfPtpMIB Objects 2 }

4.3. The Table Structures

   ietfptpSystemTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpSystemEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of count information about the PTP system for all
           domains."
       ::= { ietfPtpMIB SystemInfo 1 }

   ietfptpSystemEntry OBJECT-TYPE
       SYNTAX          ietfptpSystemEntry
       MAX-ACCESS      not-accessible


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       STATUS          current
       DESCRIPTION
           "An entry in the table, containing count information about a
           single domain. New row entries are added when the PTP clock
           for this domain is configured, while the unconfiguration of
           the PTP clock removes it."
       INDEX           {
                           ietfptpDomainIndex,
                           ietfptpInstanceIndex
                       }
       ::= { ietfptpSystemTable 1 }

   ietfptpSystemEntry ::= SEQUENCE {
           ietfptpDomainIndex
   ClockDomainType,
           ietfptpInstanceIndex
   ClockInstanceType,
           ietfptpDomainClockPortsTotal                  Gauge32
   }

   ietfptpDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices. The Clock Domain is a logical
           group of clocks and devices that synchronize with each other
           using the PTP protocol.

           0           Default domain
           1           Alternate domain 1
           2           Alternate domain 2
           3           Alternate domain 3
           4 - 127     User-defined domains
           128 - 255   Reserved"
       ::= { ietfptpSystemEntry 1 }

   ietfptpInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the Clock for this
           domain."
       ::= { ietfptpSystemEntry 2 }

   ietfptpDomainClockPortsTotal OBJECT-TYPE
       SYNTAX          Gauge32


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       UNITS           "ptp ports"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the total number of clock ports
           configured within a domain."
       ::= { ietfptpSystemEntry 3 }

   ietfptpSystemDomainTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpSystemDomainEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP system for all clock
           modes -- ordinary, boundary or transparent."
       ::= { ietfPtpMIB SystemInfo 2 }

   ietfptpSystemDomainEntry OBJECT-TYPE
       SYNTAX          ietfptpSystemDomainEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single clock mode for the PTP system. A row entry gets added
           when PTP clocks are configured on the router."
       INDEX           { ietfptpSystemDomainClockTypeIndex }
       ::= { ietfptpSystemDomainTable 1 }

   ietfptpSystemDomainEntry ::= SEQUENCE {
           ietfptpSystemDomainClockTypeIndex ClockType,
           ietfptpSystemDomainTotals         Gauge32
   }

   ietfptpSystemDomainClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpSystemDomainEntry 1 }

   ietfptpSystemDomainTotals OBJECT-TYPE
       SYNTAX          Gauge32
       UNITS           "domains"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the total number of PTP domains for


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           this particular clock type configured in this node."
       ::= { ietfptpSystemDomainEntry 2 }

   ietfptpClockNodeTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockNodeEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP system for a given
           domain."
       ::= { ietfPtpMIB SystemInfo 3 }

   ietfptpClockNodeEntry OBJECT-TYPE
       SYNTAX          ietfptpClockNodeEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single domain. A entry is added when a new PTP clock domain
           is configured on the router."
       INDEX           {
                           ietfptpClockDomainIndex,
                           ietfptpClockTypeIndex,
                           ietfptpClockInstanceIndex
                       }
       ::= { ietfptpClockNodeTable 1 }

   ietfptpClockNodeEntry ::= SEQUENCE {
           ietfptpClockDomainIndex              ClockDomainType,
           ietfptpClockTypeIndex                ClockType,
           ietfptpClockInstanceIndex            ClockInstanceType,
           ietfptpSystemProfile                 ClockProfileType
   }

   ietfptpClockDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockNodeEntry 1 }

   ietfptpClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the


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           Textual convention description."
       ::= { ietfptpClockNodeEntry 2 }

   ietfptpClockInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the Clock for this
           clock type for the given domain."
       ::= { ietfptpClockNodeEntry 3 }


   ietfptpSystemProfile OBJECT-TYPE
       SYNTAX          ClockProfileType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP Profile implemented on the
           system."
       REFERENCE       "Section 19.3 PTP profiles of [1]"
       ::= { ietfPtpMIB SystemInfo 1 }

   ietfptpClockCurrentDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockCurrentDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP clock Current Datasets
           for all domains."
       ::= { ietfPtpMIB ClockInfo 1 }

   ietfptpClockCurrentDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockCurrentDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP clock Current Datasets for a domain."
       REFERENCE
           "[IEEE1588-2008] Section 8.2.2 currentDS data set member
           specifications of [1]"
       INDEX           {
                           ietfptpClockCurrentDSDomainIndex,
                           ietfptpClockCurrentDSClockTypeIndex,
                           ietfptpClockCurrentDSInstanceIndex
                       }
       ::= { ietfptpClockCurrentDSTable 1 }



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   ietfptpClockCurrentDSEntry ::= SEQUENCE {
           ietfptpClockCurrentDSDomainIndex      ClockDomainType,
           ietfptpClockCurrentDSClockTypeIndex   ClockType,
           ietfptpClockCurrentDSInstanceIndex    ClockInstanceType,
           ietfptpClockCurrentDSStepsRemoved     Counter32,
           ietfptpClockCurrentDSOffsetFromMaster ClockTimeInterval,
           ietfptpClockCurrentDSMeanPathDelay    ClockTimeInterval
   }

   ietfptpClockCurrentDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockCurrentDSEntry 1 }

   ietfptpClockCurrentDSClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockCurrentDSEntry 2 }

   ietfptpClockCurrentDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockCurrentDSEntry 3 }

   ietfptpClockCurrentDSStepsRemoved OBJECT-TYPE
       SYNTAX          Counter32
       UNITS           "steps"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "The current clock dataset StepsRemoved value.

           This object specifies the distance measured by the number of
           boundary clocks between the local clock and the Foreign
           master as indicated in the stepsRemoved field of Announce
           messages."
       REFERENCE       "[IEEE1588-2008] Section 8.2.2.2 stepsRemoved"


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       ::= { ietfptpClockCurrentDSEntry 4 }

   ietfptpClockCurrentDSOffsetFromMaster OBJECT-TYPE
       SYNTAX          ClockTimeInterval
       UNITS           "Time Interval"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the current clock dataset ClockOffset
           value. The value of the computation of the offset in time
           between
           a slave and a master clock."
       REFERENCE       "[IEEE1588-2008] Section 8.2.2.3 of [1]"
       ::= { ietfptpClockCurrentDSEntry 5 }

   ietfptpClockCurrentDSMeanPathDelay OBJECT-TYPE
       SYNTAX          ClockTimeInterval
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the current clock dataset
           MeanPathDelay value.

           The mean path delay between a pair of ports as measure by
           the delay request-response mechanism."
       REFERENCE       "[IEEE1588-2008] Section 8.2.2.4 mean path
   delay"
       ::= { ietfptpClockCurrentDSEntry 6 }

   ietfptpClockParentDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockParentDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP clock Parent Datasets
           for all domains."
       ::= { ietfPtpMIB ClockInfo 2 }

   ietfptpClockParentDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockParentDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP clock Parent Datasets for a domain."
       REFERENCE
           "Section 8.2.3 parentDS data set member specifications of
           [1]"
       INDEX           {


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                           ietfptpClockParentDSDomainIndex,
                           ietfptpClockParentDSClockTypeIndex,
                           ietfptpClockParentDSInstanceIndex
                       }
       ::= { ietfptpClockParentDSTable 1 }

   ietfptpClockParentDSEntry ::= SEQUENCE {
       ietfptpClockParentDSDomainIndex            ClockDomainType,
       ietfptpClockParentDSClockTypeIndex         ClockType,
       ietfptpClockParentDSInstanceIndex          ClockInstanceType,
       ietfptpClockParentDSParentPortIdentity     OCTET STRING,
       ietfptpClockParentDSParentStats            TruthValue,
       ietfptpClockParentDSOffset                 ClockIntervalBase2,
       ietfptpClockParentDSClockPhChRate          Integer32,
       ietfptpClockParentDSGMClockIdentity        ClockIdentity,
       ietfptpClockParentDSGMClockPriority1       Integer32,
       ietfptpClockParentDSGMClockPriority2       Integer32,
       ietfptpClockParentDSGMClockQualityClass
   ClockQualityClassType,
       ietfptpClockParentDSGMClockQualityAccuracy
   ClockQualityAccuracyType,
       ietfptpClockParentDSGMClockQualityOffset   Unsigned32
   }

   ietfptpClockParentDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockParentDSEntry 1 }

   ietfptpClockParentDSClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockParentDSEntry 2 }

   ietfptpClockParentDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."


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       ::= { ietfptpClockParentDSEntry 3 }

   ietfptpClockParentDSParentPortIdentity OBJECT-TYPE
       SYNTAX          OCTET STRING
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value of portIdentity of the port
           on the master that issues the Sync messages used in
           synchronizing this clock."
       REFERENCE
           "section 8.2.3.2 parentDS.parentPortIdentity of [1]"
       ::= { ietfptpClockParentDSEntry 4 }

   ietfptpClockParentDSParentStats OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Parent Dataset ParentStats value.

           This value indicates whether the values of ParentDSOffset
           and ParentDSClockPhChRate have been measured and are valid.
           A TRUE value shall indicate valid data."
       REFERENCE       "section 8.2.3.3 parentDS.parentStats of [1]"
       ::= { ietfptpClockParentDSEntry 5 }

   ietfptpClockParentDSOffset OBJECT-TYPE
       SYNTAX          ClockIntervalBase2 (-128..127)
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Parent Dataset
           ParentOffsetScaledLogVariance value.

           This value is the variance of the parent clocks phase as
           measured by the local clock."
       REFERENCE
           "section 8.2.3.4
           parentDS.observedParentOffsetScaledLogVariance [1]"
       ::= { ietfptpClockParentDSEntry 6 }

   ietfptpClockParentDSClockPhChRate OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the clock's parent dataset
           ParentClockPhaseChangeRate value.


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           This value is an estimate of the parent clocks phase change
           rate as measured by the slave clock."
       REFERENCE
           "section 8.2.3.5
           parentDS.observedParentClockPhaseChangeRate of [1]"
       ::= { ietfptpClockParentDSEntry 7 }

   ietfptpClockParentDSGMClockIdentity OBJECT-TYPE
       SYNTAX          ClockIdentity
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset Grandmaster clock
           identity."
       REFERENCE
           "section  8.2.3.6 parentDS.grandmasterIdentity of [1]"
       ::= { ietfptpClockParentDSEntry 8 }

   ietfptpClockParentDSGMClockPriority1 OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset Grandmaster clock
           priority1."
       REFERENCE
           "section 8.2.3.8 parentDS.grandmasterPriority1 of [1]"
       ::= { ietfptpClockParentDSEntry 9 }

   ietfptpClockParentDSGMClockPriority2 OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset grandmaster clock
           priority2."
       REFERENCE
           "section 8.2.3.9 parentDS.grandmasterPriority2 of [1]"
       ::= { ietfptpClockParentDSEntry 10 }

   ietfptpClockParentDSGMClockQualityClass OBJECT-TYPE
       SYNTAX          ClockQualityClassType (0..255)
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset grandmaster clock
           quality class."
       REFERENCE


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           "section 8.2.3.7 parentDS.grandmasterClockQuality of [1]"
       ::= { ietfptpClockParentDSEntry 11 }

   ietfptpClockParentDSGMClockQualityAccuracy OBJECT-TYPE
       SYNTAX          ClockQualityAccuracyType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset grandmaster clock
           quality accuracy."
       REFERENCE
           "section 8.2.3.7 parentDS.grandmasterClockQuality of [1]"
       ::= { ietfptpClockParentDSEntry 12 }

   ietfptpClockParentDSGMClockQualityOffset OBJECT-TYPE
       SYNTAX          Unsigned32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the parent dataset grandmaster clock
           quality offset."
       REFERENCE
           "section 8.2.3.7 parentDS.grandmasterClockQuality of [1]"
       ::= { ietfptpClockParentDSEntry 13 }

   ietfptpClockDefaultDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockDefaultDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP clock Default Datasets
           for all domains."
       ::= { ietfPtpMIB ClockInfo 3 }

   ietfptpClockDefaultDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockDefaultDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP clock Default Datasets for a domain."
       INDEX           {
                           ietfptpClockDefaultDSDomainIndex,
                           ietfptpClockDefaultDSClockTypeIndex,
                           ietfptpClockDefaultDSInstanceIndex
                       }
       ::= { ietfptpClockDefaultDSTable 1 }

   ietfptpClockDefaultDSEntry ::= SEQUENCE {


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       ietfptpClockDefaultDSDomainIndex     ClockDomainType,
       ietfptpClockDefaultDSClockTypeIndex  ClockType,
       ietfptpClockDefaultDSInstanceIndex   ClockInstanceType,
       ietfptpClockDefaultDSTwoStepFlag     TruthValue,
       ietfptpClockDefaultDSClockIdentity   ClockIdentity,
       ietfptpClockDefaultDSPriority1       Integer32,
       ietfptpClockDefaultDSPriority2       Integer32,
       ietfptpClockDefaultDSSlaveOnly       TruthValue,
       ietfptpClockDefaultDSQualityClass    ClockQualityClassType,
       ietfptpClockDefaultDSQualityAccuracy ClockQualityAccuracyType,
       ietfptpClockDefaultDSQualityOffset   Integer32
   }

   ietfptpClockDefaultDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockDefaultDSEntry 1 }

   ietfptpClockDefaultDSClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockDefaultDSEntry 2 }

   ietfptpClockDefaultDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockDefaultDSEntry 3 }

   ietfptpClockDefaultDSTwoStepFlag OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies whether the Two Step process is
           used."
       ::= { ietfptpClockDefaultDSEntry 4 }



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   ietfptpClockDefaultDSClockIdentity OBJECT-TYPE
       SYNTAX          ClockIdentity
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default Datasets clock identity."
       ::= { ietfptpClockDefaultDSEntry 5 }

   ietfptpClockDefaultDSPriority1 OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default Datasets clock
           Priority1."
       ::= { ietfptpClockDefaultDSEntry 6 }

   ietfptpClockDefaultDSPriority2 OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default Datasets clock
           Priority2."
       ::= { ietfptpClockDefaultDSEntry 7 }

   ietfptpClockDefaultDSSlaveOnly OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "Whether the SlaveOnly flag is set."
       ::= { ietfptpClockDefaultDSEntry 8 }

   ietfptpClockDefaultDSQualityClass OBJECT-TYPE
       SYNTAX          ClockQualityClassType (0..255)
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default dataset Quality Class."
       ::= { ietfptpClockDefaultDSEntry 9 }

   ietfptpClockDefaultDSQualityAccuracy OBJECT-TYPE
       SYNTAX          ClockQualityAccuracyType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default dataset Quality
           Accuracy."


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       ::= { ietfptpClockDefaultDSEntry 10 }

   ietfptpClockDefaultDSQualityOffset OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the default dataset Quality offset."
       ::= { ietfptpClockDefaultDSEntry 11 }

   ietfptpClockRunningTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockRunningEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP clock Running Datasets
           for all domains."
       ::= { ietfPtpMIB ClockInfo 4 }

   ietfptpClockRunningEntry OBJECT-TYPE
       SYNTAX          ietfptpClockRunningEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP clock running Datasets for a domain."
       INDEX           {
                           ietfptpClockRunningDomainIndex,
                           ietfptpClockRunningClockTypeIndex,
                           ietfptpClockRunningInstanceIndex
                       }
       ::= { ietfptpClockRunningTable 1 }

   ietfptpClockRunningEntry ::= SEQUENCE {
           ietfptpClockRunningDomainIndex     ClockDomainType,
           ietfptpClockRunningClockTypeIndex  ClockType,
           ietfptpClockRunningInstanceIndex   ClockInstanceType,
           ietfptpClockRunningState           ClockStateType,
           ietfptpClockRunningPacketsSent     Counter64,
           ietfptpClockRunningPacketsReceived Counter64
   }

   ietfptpClockRunningDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."


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       ::= { ietfptpClockRunningEntry 1 }

   ietfptpClockRunningClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockRunningEntry 2 }

   ietfptpClockRunningInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockRunningEntry 3 }

   ietfptpClockRunningState OBJECT-TYPE
       SYNTAX          ClockStateType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Clock state returned by PTP
           engine which was described earlier.

           Freerun state. Applies to a slave device that is not locked
           to a master. This is the initial state a slave starts out
           with when
           it is not getting any PTP packets from the master or because
           of some other input error (erroneous packets, etc).

           Holdover state. In this state the slave device is locked to
           a master but communication with the master is lost or the
           timestamps in the ptp packets are incorrect. But since the
           slave was locked to the master, it can run with the same
           accuracy for sometime. The slave can continue to operate in
           this state for some time. If communication with the master
           is not restored for a while, the device is moved to the
           FREERUN state.

           Acquiring state. The slave device is receiving packets from
           a master and is trying to acquire a lock.

           Freq_locked state. The slave device is locked to the master
           with respect to frequency, but is not phase aligned.



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           Phase_aligned state. The slave device is locked to the
           master with respect to frequency and phase."
       ::= { ietfptpClockRunningEntry 4 }

   ietfptpClockRunningPacketsSent OBJECT-TYPE
       SYNTAX          Counter64
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the total number of all packet
           Unicast and multicast that have been sent out for this clock
           in this domain for this type."
       ::= { ietfptpClockRunningEntry 5 }

   ietfptpClockRunningPacketsReceived OBJECT-TYPE
       SYNTAX          Counter64
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the total number of all packet
           Unicast and multicast that have been received for this clock
           in this domain for this type."
       ::= { ietfptpClockRunningEntry 6 }

   ietfptpClockTimePropertiesDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockTimePropertiesDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP clock Timeproperties
           Datasets for all domains."
       ::= { ietfPtpMIB ClockInfo 5 }

   ietfptpClockTimePropertiesDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockTimePropertiesDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP clock timeproperties Datasets for a domain."
       REFERENCE       "Section 8.2.4 of [1]"
       INDEX           {
                           ietfptpClockTimePropertiesDSDomainIndex,
                           ietfptpClockTimePropertiesDSClockTypeIndex,
                           ietfptpClockTimePropertiesDSInstanceIndex
                       }
       ::= { ietfptpClockTimePropertiesDSTable 1 }

   ietfptpClockTimePropertiesDSEntry ::= SEQUENCE {


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       ietfptpClockTimePropertiesDSDomainIndex
   ClockDomainType,
       ietfptpClockTimePropertiesDSClockTypeIndex        ClockType,
       ietfptpClockTimePropertiesDSInstanceIndex
   ClockInstanceType,
       ietfptpClockTimePropertiesDSCurrentUTCOffsetValid TruthValue,
       ietfptpClockTimePropertiesDSCurrentUTCOffset      Integer32,
       ietfptpClockTimePropertiesDSLeap59                TruthValue,
       ietfptpClockTimePropertiesDSLeap61                TruthValue,
       ietfptpClockTimePropertiesDSTimeTraceable         TruthValue,
       ietfptpClockTimePropertiesDSFreqTraceable         TruthValue,
       ietfptpClockTimePropertiesDSPTPTimescale          TruthValue,
       ietfptpClockTimePropertiesDSSource
   ClockTimeSourceType
   }

   ietfptpClockTimePropertiesDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockTimePropertiesDSEntry 1 }

   ietfptpClockTimePropertiesDSClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockTimePropertiesDSEntry 2 }

   ietfptpClockTimePropertiesDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockTimePropertiesDSEntry 3 }

   ietfptpClockTimePropertiesDSCurrentUTCOffsetValid OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the timeproperties dataset value of


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           whether current UTC offset is valid."
       REFERENCE       "Section 8.2.4.2 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 4 }

   ietfptpClockTimePropertiesDSCurrentUTCOffset OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the timeproperties dataset value of
           current UTC offset.

           In PTP systems whose epoch is the PTP epoch, the value of
           timePropertiesDS.currentUtcOffset is the offset
           between TAI and UTC; otherwise the value has no meaning. The
           value shall be in units of seconds.
           The initialization value shall be selected as follows:
           a) If the timePropertiesDS.ptpTimescale (see 8.2.4.8) is
           TRUE, the value is the value obtained from a
           primary reference if the value is known at the time of
           initialization, else.
           b) The value shall be the current number of leap seconds
           (7.2.3) when the node is designed."
       REFERENCE       "Section 8.2.4.3 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 5 }

   ietfptpClockTimePropertiesDSLeap59 OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Leap59 value in the clock Current
           Dataset."
       REFERENCE       "Section 8.2.4.4 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 6 }

   ietfptpClockTimePropertiesDSLeap61 OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Leap61 value in the clock Current
           Dataset."
       REFERENCE       "Section 8.2.4.5 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 7 }

   ietfptpClockTimePropertiesDSTimeTraceable OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only


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       STATUS          current
       DESCRIPTION
           "This object specifies the Timetraceable value in the clock
           Current Dataset."
       REFERENCE       "Section 8.2.4.6 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 8 }

   ietfptpClockTimePropertiesDSFreqTraceable OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Frequency Traceable value in the
           clock Current Dataset."
       REFERENCE       "Section 8.2.4.7 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 9 }

   ietfptpClockTimePropertiesDSPTPTimescale OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP Timescale value in the clock
           Current Dataset."
       REFERENCE       "Section 8.2.4.8 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 10 }

   ietfptpClockTimePropertiesDSSource OBJECT-TYPE
       SYNTAX          ClockTimeSourceType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Timesource value in the clock
           Current Dataset."
       REFERENCE       "Section 8.2.4.9 of [1]"
       ::= { ietfptpClockTimePropertiesDSEntry 11 }

   ietfptpClockTransDefaultDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockTransDefaultDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the PTP transparent clock
           Default Datasets for all domains."
       ::= { ietfPtpMIB ClockInfo 6 }

   ietfptpClockTransDefaultDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockTransDefaultDSEntry
       MAX-ACCESS      not-accessible


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       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single PTP transparent clock Default Datasets for a domain."
       REFERENCE       "Section 8.3.2 of [1]"
       INDEX           {
                           ietfptpClockTransDefaultDSDomainIndex,
                           ietfptpClockTransDefaultDSInstanceIndex
                       }
       ::= { ietfptpClockTransDefaultDSTable 1 }

   ietfptpClockTransDefaultDSEntry ::= SEQUENCE {
           ietfptpClockTransDefaultDSDomainIndex   ClockDomainType,
           ietfptpClockTransDefaultDSInstanceIndex ClockInstanceType,
           ietfptpClockTransDefaultDSClockIdentity ClockIdentity,
           ietfptpClockTransDefaultDSNumOfPorts    Counter32,
           ietfptpClockTransDefaultDSDelay         ClockMechanismType,
           ietfptpClockTransDefaultDSPrimaryDomain Integer32
   }

   ietfptpClockTransDefaultDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockTransDefaultDSEntry 1 }

   ietfptpClockTransDefaultDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockTransDefaultDSEntry 2 }

   ietfptpClockTransDefaultDSClockIdentity OBJECT-TYPE
       SYNTAX          ClockIdentity
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value of the clockIdentity
           attribute of the local clock."
       REFERENCE       "Section 8.3.2.2.1 of [1]"
       ::= { ietfptpClockTransDefaultDSEntry 3 }

   ietfptpClockTransDefaultDSNumOfPorts OBJECT-TYPE


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       SYNTAX          Counter32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the number of PTP ports of the
           device."
       REFERENCE       "Section 8.3.2.2.2 of [1]"
       ::= { ietfptpClockTransDefaultDSEntry 4 }

   ietfptpClockTransDefaultDSDelay OBJECT-TYPE
       SYNTAX          ClockMechanismType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object, if the transparent clock is an end-to-end
           transparent clock, has the value shall be E2E; If the
           transparent clock is a peer-to-peer transparent clock, the
           value shall be P2P."
       REFERENCE       "Section 8.3.2.3.1 of [1]"
       ::= { ietfptpClockTransDefaultDSEntry 5 }

   ietfptpClockTransDefaultDSPrimaryDomain OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value of the primary
           syntonization domain. The initialization value shall be 0."
       REFERENCE       "Section 8.3.2.3.2 of [1]"
       ::= { ietfptpClockTransDefaultDSEntry 6 }

   ietfptpClockPortTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockPortEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the clock ports for a particular
           domain."
       ::= { ietfPtpMIB ClockInfo 7 }

   ietfptpClockPortEntry OBJECT-TYPE
       SYNTAX          ietfptpClockPortEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single clock port."
       INDEX           {
                           ietfptpClockPortDomainIndex,


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                           ietfptpClockPortClockTypeIndex,
                           ietfptpClockPortClockInstanceIndex,
                           ietfptpClockPortTablePortNumberIndex
                       }
       ::= { ietfptpClockPortTable 1 }

   ietfptpClockPortEntry ::= SEQUENCE {
           ietfptpClockPortDomainIndex            ClockDomainType,
           ietfptpClockPortClockTypeIndex         ClockType,
           ietfptpClockPortClockInstanceIndex     ClockInstanceType,
           ietfptpClockPortTablePortNumberIndex   ClockPortNumber,
           ietfptpClockPortName                   DisplayString,
           ietfptpClockPortRole                   ClockRoleType,
           ietfptpClockPortSyncOneStep            TruthValue,
           ietfptpClockPortCurrentPeerAddressType InetAddressType,
           ietfptpClockPortCurrentPeerAddress     InetAddress,
           ietfptpClockPortNumOfAssociatedPorts   Gauge32
   }

   ietfptpClockPortDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockPortEntry 1 }

   ietfptpClockPortClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockPortEntry 2 }

   ietfptpClockPortClockInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockPortEntry 3 }

   ietfptpClockPortTablePortNumberIndex OBJECT-TYPE
       SYNTAX          ClockPortNumber (1..65535)
       MAX-ACCESS      not-accessible


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       STATUS          current
       DESCRIPTION
           "This object specifies the PTP Portnumber for this port."
       ::= { ietfptpClockPortEntry 4 }

   ietfptpClockPortName OBJECT-TYPE
       SYNTAX          DisplayString (SIZE  (1..64))
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP clock port name configured on
           the router."
       ::= { ietfptpClockPortEntry 5 }

   ietfptpClockPortRole OBJECT-TYPE
       SYNTAX          ClockRoleType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object describes the current role (slave/master) of
           the port."
       ::= { ietfptpClockPortEntry 6 }

   ietfptpClockPortSyncOneStep OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies that one-step clock operation between
           the PTP master and slave device is enabled."
       ::= { ietfptpClockPortEntry 7 }

   ietfptpClockPortCurrentPeerAddressType OBJECT-TYPE
       SYNTAX          InetAddressType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the current peer's network address
           used for PTP communication. Based on the scenario and the
           setup involved, the values might look like these -
           Scenario                   Value
           -------------------   ----------------
           Single Master         master port
           Multiple Masters      selected master port
           Single Slave          slave port
           Multiple Slaves       <empty>

           (In relevant setups, information on available
           slaves and available masters will be available through


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           ietfptpClockPortAssociateTable)"
       ::= { ietfptpClockPortEntry 8 }

   ietfptpClockPortCurrentPeerAddress OBJECT-TYPE
       SYNTAX          InetAddress
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the current peer's network address
           used for PTP communication. Based on the scenario and the
           setup involved, the values might look like these -
           Scenario                   Value
           -------------------   ----------------
           Single Master         master port
           Multiple Masters      selected master port
           Single Slave          slave port
           Multiple Slaves       <empty>

           (In relevant setups, information on available
           slaves and available masters will be available through
           ietfptpClockPortAssociateTable)"
       ::= { ietfptpClockPortEntry 9 }

   ietfptpClockPortNumOfAssociatedPorts OBJECT-TYPE
       SYNTAX          Gauge32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies -
           For a master port - the number of PTP slave sessions (peers)
           associated with this PTP port.
           For a slave port - the number of masters available to this
           slave port (might or might not be peered)."
       ::= { ietfptpClockPortEntry 10 }

   ietfptpClockPortDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockPortDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the clock ports dataset for a
           particular domain."
       ::= { ietfPtpMIB ClockInfo 8 }

   ietfptpClockPortDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockPortDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION


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           "An entry in the table, containing port dataset information
           for a single clock port."
       INDEX           {
                           ietfptpClockPortDSDomainIndex,
                           ietfptpClockPortDSClockTypeIndex,
                           ietfptpClockPortDSClockInstanceIndex,
                           ietfptpClockPortDSPortNumberIndex
                       }
       ::= { ietfptpClockPortDSTable 1 }

   ietfptpClockPortDSEntry ::= SEQUENCE {
           ietfptpClockPortDSDomainIndex          ClockDomainType,
           ietfptpClockPortDSClockTypeIndex       ClockType,
           ietfptpClockPortDSClockInstanceIndex   ClockInstanceType,
           ietfptpClockPortDSPortNumberIndex      ClockPortNumber,
           ietfptpClockPortDSName                 DisplayString,
           ietfptpClockPortDSPortIdentity         OCTET STRING,
           ietfptpClockPortDSAnnouncementInterval Integer32,
           ietfptpClockPortDSAnnounceRctTimeout   Integer32,
           ietfptpClockPortDSSyncInterval         Integer32,
           ietfptpClockPortDSMinDelayReqInterval  Integer32,
           ietfptpClockPortDSPeerDelayReqInterval Integer32,
           ietfptpClockPortDSDelayMech            ClockMechanismType,
           ietfptpClockPortDSPeerMeanPathDelay    ClockTimeInterval,
           ietfptpClockPortDSGrantDuration        Unsigned32,
           ietfptpClockPortDSPTPVersion           Integer32
   }

   ietfptpClockPortDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockPortDSEntry 1 }

   ietfptpClockPortDSClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockPortDSEntry 2 }

   ietfptpClockPortDSClockInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible


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       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockPortDSEntry 3 }

   ietfptpClockPortDSPortNumberIndex OBJECT-TYPE
       SYNTAX          ClockPortNumber (1..65535)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP portnumber associated with
           this PTP port."
       ::= { ietfptpClockPortDSEntry 4 }

   ietfptpClockPortDSName OBJECT-TYPE
       SYNTAX          DisplayString (SIZE  (1..64))
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP clock port name."
       ::= { ietfptpClockPortDSEntry 5 }

   ietfptpClockPortDSPortIdentity OBJECT-TYPE
       SYNTAX          OCTET STRING
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP clock port Identity."
       ::= { ietfptpClockPortDSEntry 6 }

   ietfptpClockPortDSAnnouncementInterval OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Announce message transmission
           interval associated with this clock port."
       ::= { ietfptpClockPortDSEntry 7 }

   ietfptpClockPortDSAnnounceRctTimeout OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Announce receipt timeout
           associated with this clock port."
       ::= { ietfptpClockPortDSEntry 8 }



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   ietfptpClockPortDSSyncInterval OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Sync message transmission
           interval."
       ::= { ietfptpClockPortDSEntry 9 }

   ietfptpClockPortDSMinDelayReqInterval OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Delay_Req message transmission
           interval."
       ::= { ietfptpClockPortDSEntry 10 }

   ietfptpClockPortDSPeerDelayReqInterval OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the Pdelay_Req message transmission
           interval."
       ::= { ietfptpClockPortDSEntry 11 }

   ietfptpClockPortDSDelayMech OBJECT-TYPE
       SYNTAX          ClockMechanismType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the delay mechanism used. If the
           clock is an end-to-end clock, the value of the is e2e, else
           if the clock is a peer to-peer clock, the value shall be
           p2p."
       ::= { ietfptpClockPortDSEntry 12 }

   ietfptpClockPortDSPeerMeanPathDelay OBJECT-TYPE
       SYNTAX          ClockTimeInterval
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the peer meanPathDelay."
       ::= { ietfptpClockPortDSEntry 13 }

   ietfptpClockPortDSGrantDuration OBJECT-TYPE
       SYNTAX          Unsigned32
       MAX-ACCESS      read-only


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       STATUS          current
       DESCRIPTION
           "This object specifies the grant duration allocated by the
           master."
       ::= { ietfptpClockPortDSEntry 14 }

   ietfptpClockPortDSPTPVersion OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP version being used."
       ::= { ietfptpClockPortDSEntry 15 }



   ietfptpClockPortRunningTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockPortRunningEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the clock ports running dataset
           for a particular domain."
       ::= { ietfPtpMIB ClockInfo 9 }

   ietfptpClockPortRunningEntry OBJECT-TYPE
       SYNTAX          ietfptpClockPortRunningEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing runing dataset
           information about a single clock port."
       INDEX           {
                           ietfptpClockPortRunningDomainIndex,
                           ietfptpClockPortRunningClockTypeIndex,
                           ietfptpClockPortRunningClockInstanceIndex,
                           ietfptpClockPortRunningPortNumberIndex
                       }
       ::= { ietfptpClockPortRunningTable 1 }

   ietfptpClockPortRunningEntry ::= SEQUENCE {
           ietfptpClockPortRunningDomainIndex        ClockDomainType,
           ietfptpClockPortRunningClockTypeIndex     ClockType,
           ietfptpClockPortRunningClockInstanceIndex ClockInstanceType,
           ietfptpClockPortRunningPortNumberIndex    ClockPortNumber,
           ietfptpClockPortRunningName               DisplayString,
           ietfptpClockPortRunningState              ClockPortState,
           ietfptpClockPortRunningRole               ClockRoleType,



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           ietfptpClockPortRunningInterfaceIndex
   InterfaceIndexOrZero,
           ietfptpClockPortRunningIPversion          Integer32,
           ietfptpClockPortRunningEncapsulationType  Integer32,
           ietfptpClockPortRunningTxMode             ClockTxModeType,
           ietfptpClockPortRunningRxMode             ClockTxModeType,
           ietfptpClockPortRunningPacketsReceived    Counter64,
           ietfptpClockPortRunningPacketsSent        Counter64
   }

   ietfptpClockPortRunningDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockPortRunningEntry 1 }

   ietfptpClockPortRunningClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the clock type as defined in the
           Textual convention description."
       ::= { ietfptpClockPortRunningEntry 2 }

   ietfptpClockPortRunningClockInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockPortRunningEntry 3 }

   ietfptpClockPortRunningPortNumberIndex OBJECT-TYPE
       SYNTAX          ClockPortNumber (1..65535)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP portnumber associated with
           this clock port."
       ::= { ietfptpClockPortRunningEntry 4 }

   ietfptpClockPortRunningName OBJECT-TYPE
       SYNTAX          DisplayString (SIZE  (1..64))
       MAX-ACCESS      read-only


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       STATUS          current
       DESCRIPTION
           "This object specifies the PTP clock port name."
       ::= { ietfptpClockPortRunningEntry 5 }

   ietfptpClockPortRunningState OBJECT-TYPE
       SYNTAX          ClockPortState
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the port state returned by PTP
           engine.

           initializing - In this state a port initializes
                          its data sets, hardware, and
                          communication facilities.
           faulty       - The fault state of the protocol.
           disabled     - The port shall not place any
                          messages on its communication path.
           listening    - The port is waiting for the
                          announceReceiptTimeout to expire or
                          to receive an Announce message from
                          a master.
           preMaster    - The port shall behave in all respects
                          as though it were in the MASTER state
                          except that it shall not place any
                          messages on its communication path
                          except for Pdelay_Req, Pdelay_Resp,
                          Pdelay_Resp_Follow_Up, signaling, or
                          management messages.
           master       - The port is behaving as a master port.
           passive      - The port shall not place any
                          messages on its communication path
                          except for Pdelay_Req, Pdelay_Resp,
                          Pdelay_Resp_Follow_Up, or signaling
                          messages, or management messages
                          that are a required response to
                          another management message
           uncalibrated - The local port is preparing to
                          synchronize to the master port.
           slave        - The port is synchronizing to the
                          selected master port."
       ::= { ietfptpClockPortRunningEntry 6 }

   ietfptpClockPortRunningRole OBJECT-TYPE
       SYNTAX          ClockRoleType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION


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           "This object specifies the Clock Role."
       ::= { ietfptpClockPortRunningEntry 7 }

   ietfptpClockPortRunningInterfaceIndex OBJECT-TYPE
       SYNTAX          InterfaceIndexOrZero
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the interface on the router being
           used by the PTP Clock for PTP communication."
       ::= { ietfptpClockPortRunningEntry 8 }

   ietfptpClockPortRunningIPversion OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the IP version being used for PTP
           communication (the mapping used)."
       ::= { ietfptpClockPortRunningEntry 9 }

   ietfptpClockPortRunningEncapsulationType OBJECT-TYPE
       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the type of encapsulation if the
           interface is adding extra layers (eg. VLAN, Pseudowire
           encapsulation...) for the PTP messages."
       ::= { ietfptpClockPortRunningEntry 10 }

   ietfptpClockPortRunningTxMode OBJECT-TYPE
       SYNTAX          ClockTxModeType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the clock transmission mode as

           unicast:       Using unicast communication channel.
           multicast:     Using Multicast communication channel.
           multicast-mix: Using multicast-unicast comm. channel"
       ::= { ietfptpClockPortRunningEntry 11 }

   ietfptpClockPortRunningRxMode OBJECT-TYPE
       SYNTAX          ClockTxModeType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the clock receive mode as


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           unicast:       Using unicast communication channel.
           multicast:     Using Multicast communication channel.
           multicast-mix: Using multicast-unicast comm. channel"
       ::= { ietfptpClockPortRunningEntry 12 }

   ietfptpClockPortRunningPacketsReceived OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the packets received on the clock
           port (cumulative)."
       ::= { ietfptpClockPortRunningEntry 13 }

   ietfptpClockPortRunningPacketsSent OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the packets sent on the clock port
           (cumulative)."
       ::= { ietfptpClockPortRunningEntry 14 }

   ietfptpClockPortTransDSTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockPortTransDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about the transparent clock ports
           running dataset for a particular domain."
       ::= { ietfPtpMIB ClockInfo 10 }

   ietfptpClockPortTransDSEntry OBJECT-TYPE
       SYNTAX          ietfptpClockPortTransDSEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing clock port transparent
           dataset information about a single clock port"
       INDEX           {
                           ietfptpClockPortTransDSDomainIndex,
                           ietfptpClockPortTransDSInstanceIndex,
                           ietfptpClockPortTransDSPortNumberIndex
                       }
       ::= { ietfptpClockPortTransDSTable 1 }



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   ietfptpClockPortTransDSEntry ::= SEQUENCE {
           ietfptpClockPortTransDSDomainIndex        ClockDomainType,
           ietfptpClockPortTransDSInstanceIndex      ClockInstanceType,
           ietfptpClockPortTransDSPortNumberIndex    ClockPortNumber,
           ietfptpClockPortTransDSPortIdentity       ClockIdentity,
           ietfptpClockPortTransDSlogMinPdelayReqInt Integer32,
           ietfptpClockPortTransDSFaultyFlag         TruthValue,
           ietfptpClockPortTransDSPeerMeanPathDelay  ClockTimeInterval
   }

   ietfptpClockPortTransDSDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the domain number used to create
           logical group of PTP devices."
       ::= { ietfptpClockPortTransDSEntry 1 }

   ietfptpClockPortTransDSInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType (0..255)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockPortTransDSEntry 2 }

   ietfptpClockPortTransDSPortNumberIndex OBJECT-TYPE
       SYNTAX          ClockPortNumber (1..65535)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP port number associated with
           this port."
       REFERENCE       "Section 7.5.2 Port Identity of [1]"
       ::= { ietfptpClockPortTransDSEntry 3 }

   ietfptpClockPortTransDSPortIdentity OBJECT-TYPE
       SYNTAX          ClockIdentity
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value of the PortIdentity
           attribute of the local port."
       REFERENCE       "Section 8.3.3.2.1 of [1]"
       ::= { ietfptpClockPortTransDSEntry 4 }

   ietfptpClockPortTransDSlogMinPdelayReqInt OBJECT-TYPE


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       SYNTAX          Integer32
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value of the logarithm to the
           base 2 of the minPdelayReqInterval."
       REFERENCE       "Section 8.3.3.3.1 of [1]"
       ::= { ietfptpClockPortTransDSEntry 5 }

   ietfptpClockPortTransDSFaultyFlag OBJECT-TYPE
       SYNTAX          TruthValue
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the value TRUE if the port is faulty
           and FALSE if the port is operating normally."
       REFERENCE       "Section 8.3.3.3.2 of [1]"
       ::= { ietfptpClockPortTransDSEntry 6 }

   ietfptpClockPortTransDSPeerMeanPathDelay OBJECT-TYPE
       SYNTAX          ClockTimeInterval
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies, (if the delayMechanism used is P2P)
           the value is the estimate of the current one-way propagation
           delay, i.e. <meanPathDelay> on the link attached to this
           port computed using the peer delay mechanism. If the value
           of the delayMechanism used is E2E, then the value will be
           zero."
       REFERENCE       "Section 8.3.3.3.3 of [1]"
       ::= { ietfptpClockPortTransDSEntry 7 }

   ietfptpClockPortAssociateTable OBJECT-TYPE
       SYNTAX          SEQUENCE OF ietfptpClockPortAssociateEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "Table of information about a given port's associated ports.

           For a master port - multiple slave ports which have
           established sessions with the current master port.
           For a slave port - the list of master clocks available for a
           given slave port.

           Session information (pkts, errors) to be displayed based on
           availability and scenario."
       ::= { ietfPtpMIB ClockInfo 11 }



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   ietfptpClockPortAssociateEntry OBJECT-TYPE
       SYNTAX          ietfptpClockPortAssociateEntry
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "An entry in the table, containing information about a
           single associated port for the given clockport."
       INDEX           {
                           ietfptpClockPortCurrentDomainIndex,
                           ietfptpClockPortCurrentClockTypeIndex,
                           ietfptpClockPortCurrentClockInstanceIndex,
                           ietfptpClockPortCurrentPortNumberIndex,
                           ietfptpClockPortAssociatePortIndex
                       }
       ::= { ietfptpClockPortAssociateTable 1 }

   ietfptpClockPortAssociateEntry ::= SEQUENCE {
           ietfptpClockPortCurrentDomainIndex        ClockDomainType,
           ietfptpClockPortCurrentClockTypeIndex     ClockType,
           ietfptpClockPortCurrentClockInstanceIndex ClockInstanceType,
           ietfptpClockPortCurrentPortNumberIndex    ClockPortNumber,
           ietfptpClockPortAssociatePortIndex        Unsigned32,
           ietfptpClockPortAssociateAddressType      InetAddressType,
           ietfptpClockPortAssociateAddress          InetAddress,
           ietfptpClockPortAssociatePacketsSent      Counter64,
           ietfptpClockPortAssociatePacketsReceived  Counter64,
           ietfptpClockPortAssociateInErrors         Counter64,
           ietfptpClockPortAssociateOutErrors        Counter64
   }

   ietfptpClockPortCurrentDomainIndex OBJECT-TYPE
       SYNTAX          ClockDomainType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the given port's domain number."
       ::= { ietfptpClockPortAssociateEntry 1 }

   ietfptpClockPortCurrentClockTypeIndex OBJECT-TYPE
       SYNTAX          ClockType
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the given port's clock type."
       ::= { ietfptpClockPortAssociateEntry 2 }

   ietfptpClockPortCurrentClockInstanceIndex OBJECT-TYPE
       SYNTAX          ClockInstanceType
       MAX-ACCESS      not-accessible


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       STATUS          current
       DESCRIPTION
           "This object specifies the instance of the clock for this
           clock type in the given domain."
       ::= { ietfptpClockPortAssociateEntry 3 }

   ietfptpClockPortCurrentPortNumberIndex OBJECT-TYPE
       SYNTAX          ClockPortNumber
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the PTP Port Number for the given
           port."
       ::= { ietfptpClockPortAssociateEntry 4 }

   ietfptpClockPortAssociatePortIndex OBJECT-TYPE
       SYNTAX          Unsigned32 (1..65535)
       MAX-ACCESS      not-accessible
       STATUS          current
       DESCRIPTION
           "This object specifies the associated port's serial number
           in the current port's context."
       ::= { ietfptpClockPortAssociateEntry 5 }

   ietfptpClockPortAssociateAddressType OBJECT-TYPE
       SYNTAX          InetAddressType
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the peer port's network address type
           used for PTP communication."
       ::= { ietfptpClockPortAssociateEntry 6 }

   ietfptpClockPortAssociateAddress OBJECT-TYPE
       SYNTAX          InetAddress
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the peer port's network address used
           for PTP communication."
       ::= { ietfptpClockPortAssociateEntry 7 }

   ietfptpClockPortAssociatePacketsSent OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "The number of packets sent to this peer port from the


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           current port."
       ::= { ietfptpClockPortAssociateEntry 8 }

   ietfptpClockPortAssociatePacketsReceived OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "The number of packets received from this peer port by the
           current port."
       ::= { ietfptpClockPortAssociateEntry 9 }

   ietfptpClockPortAssociateInErrors OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the input errors associated with the
           peer port."
       ::= { ietfptpClockPortAssociateEntry 10 }

   ietfptpClockPortAssociateOutErrors OBJECT-TYPE
       SYNTAX          Counter64
       UNITS           "packets"
       MAX-ACCESS      read-only
       STATUS          current
       DESCRIPTION
           "This object specifies the output errors associated with the
           peer port."
       ::= { ietfptpClockPortAssociateEntry 11 }

   END


5. Relationship to the Interface MIB

   This section clarifies the relationship of this MIB to the
   Interfaces MIB [RFC 2233]. Several areas of correlation are
   addressed in the following subsections.  The implementor is referred
   to the Interfaces MIB document in order to understand the general
   intent of these areas.








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6. MIB modules required for IMPORTS

       MODULE-IDENTITY,
       OBJECT-TYPE,
       Integer32,
       Gauge32,
       Unsigned32,
       Counter32,
       Counter64
           FROM SNMPv2-SMI
       OBJECT-GROUP,
       MODULE-COMPLIANCE
           FROM SNMPv2-CONF
       TEXTUAL-CONVENTION,
       TruthValue,
       DisplayString
           FROM SNMPv2-TC
       InetAddressType,
       InetAddress
           FROM INET-ADDRESS-MIB
       InterfaceIndexOrZero
           FROM IETF-TC


7. Security Considerations

   This MIB contains readable objects whose values provide information
   related to PTP objects. While unauthorized access to the readable
   objects is relatively innocuous, unauthorized access to the write-
   able objects could cause a denial of service, or could cause
   unauthorized creation and/or manipulation of tunnels. Hence, 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 such an insecure 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 SET (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] and the View-based
   Access Control Model [RFC 2575] is recommended.

   It is then a customer/user responsibility to ensure that the SNMP
   entity giving access to this MIB, is properly configured to give
   access to those objects only to those principals (users) that have
   legitimate rights to access them.



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8. IANA Considerations

   To be added.

9. References

9.1. Normative References

   [IEEE1588-2008] "Standard for A Precision Clock Synchronization
   Protocol for Networked Measurement and Control Systems", IEEE1588-
   2008.

9.2. Informative References

   [RFC 1155] Rose, M., and K. McCloghrie, "Structure and
   Identification of Management Information for TCP/IP-based
   Internets", RFC 1155, Performance Systems International, Hughes LAN
   Systems, May 1990

   [RFC 1157] Case, J., Fedor, M., Schoffstall, M., and J. Davin,
   "Simple Network Management Protocol", RFC 1157, SNMP Research,
   Performance Systems International, Performance Systems
   International, MIT Laboratory for Computer Science, May 1990.

   [RFC 1212] Rose, M., and K. McCloghrie, "Concise MIB Definitions",
   RFC 1212, Performance Systems International, Hughes LAN Systems,
   March 1991

   [RFC 1215] M. Rose, "A Convention for Defining Traps for use with
   the SNMP", RFC 1215, Performance Systems International, March 1991

   [RFC 1305] David L. Mills, "Network Time Protocol (Version 3) -
   Specification, Implementation and Analysis", RFC 1305, University of
   Delaware, March 1992.

   [RFC 1901]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose,
   M., and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC
   1901, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach
   Consulting, Inc., International Network Services, January 1996.

   [RFC 1905] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M.,
   and S. Waldbusser, "Protocol Operations for Version 2 of the Simple
   Network Management Protocol (SNMPv2)", RFC 1905, SNMP Research,
   Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc.,
   International Network Services, January 1996.

   [RFC 1906] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M.,
   and S. Waldbusser, "Transport Mappings for Version 2 of the Simple
   Network Management Protocol (SNMPv2)", RFC 1906, SNMP Research,


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   Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc.,
   International Network Services, January 1996.

   [RFC 2233] "The Interfaces Group MIB using SMIv2", K. McCloghrie, F.
   Kastenholz, November 1997, RFC 2233

   [RFC 2271] Harrington, D., Presuhn, R., and B. Wijnen, "An
   Architecture for Describing SNMP Management Frameworks", RFC 2271,
   Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson
   Research, January 1998

   [RFC 2572] Case, J., Harrington D., Presuhn R., and B. Wijnen,
   "Message Processing and Dispatching for the Simple Network
   Management Protocol (SNMP)", RFC 2572, SNMP Research, Inc.,
   Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson
   Research, April 1999.

   [RFC 2573] Levi, D., Meyer, P., and B. Stewart, "SNMPv3
   Applications", RFC 2573, SNMP Research, Inc., Secure Computing
   Corporation, Cisco Systems, April 1999.

   [RFC 2574] Blumenthal, U., and B. Wijnen, "User-based Security Model
   (USM) for version 3 of the Simple Network Management Protocol
   (SNMPv3)", RFC 2574, IBM T. J. Watson Research, April 1999.

   [RFC 2575] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
   Access Control Model (VACM) for the Simple Network Management
   Protocol (SNMP)", RFC 2575, IBM T. J. Watson Research, BMC Software,
   Inc., Cisco Systems, Inc., April 1999.

   [RFC 2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
   "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC
   2578, April 1999.

   [RFC 2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
   "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999.

   [RFC 2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
   "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999.

10. Acknowledgements

   Thanks to John Linton and Danny Lee for valuable comments.








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11. Author's Addresses

   Vinay Shankarkumar
   Cisco Systems,
   7025-4 Kit Creek Road,
   Research Triangle Park,
   NC 27560,
   USA.
   Email: vinays@cisco.com

   Laurent Montini,
   Cisco Systems,
   11, rue Camille Desmoulins,
   92782 Issy-les-Moulineaux,
   France.
   Email: lmontini@cisco.com

   Tim Frost,
   Symmetricom Inc.,
   2300 Orchard Parkway,
   San Jose,
   CA 95131,
   USA.
   Email: tfrost@symmetricom.com

   Greg Dowd,
   Symmetricom Inc.,
   2300 Orchard Parkway,
   San Jose,
   CA 95131,
   USA.
   Email: gdowd@symmetricom.com



















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