[Docs] [txt|pdf] [Tracker] [WG] [Email] [Diff1] [Diff2] [Nits]

Versions: 00 01 02 03 04 05 06 07 RFC 5132

MBONED WG                                                    D. McWalter
Internet-Draft                                       Data Connection Ltd
Expires: January 18, 2007                                      D. Thaler
                                                   Microsoft Corporation
Obsoletes (if approved): RFC2932                              A. Kessler
                                                           Cisco Systems
                                                           July 17, 2006


                            IP Multicast MIB
                  draft-ietf-mboned-ip-mcast-mib-02.txt

Status of this Memo

   By submitting this Internet-Draft, each author represents that any
   applicable patent or other IPR claims of which he or she is aware
   have been or will be disclosed, and any of which he or she becomes
   aware will be disclosed, in accordance with Section 6 of BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on January 18, 2007.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   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 objects used for managing multicast
   function, independent of the specific multicast protocol(s) in use.
   This document obsoletes RFC 2932.



McWalter, et al.        Expires January 18, 2007                [Page 1]

Internet-Draft                IP MCAST MIB                     July 2006


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  History  . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  The Internet-Standard Management Framework . . . . . . . . . .  3
   4.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   5.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 45
     6.1   SNMPv2 . . . . . . . . . . . . . . . . . . . . . . . . . . 46
     6.2   Writeable objects  . . . . . . . . . . . . . . . . . . . . 46
     6.3   Readable objects . . . . . . . . . . . . . . . . . . . . . 47
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 48
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 48
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 48
     9.1   Normative References . . . . . . . . . . . . . . . . . . . 48
     9.2   Informative References . . . . . . . . . . . . . . . . . . 49
       Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 50
       Intellectual Property and Copyright Statements . . . . . . . . 52

































McWalter, et al.        Expires January 18, 2007                [Page 2]

Internet-Draft                IP MCAST MIB                     July 2006


1.  Introduction

   This MIB describes objects used for managing IP multicast function,
   including IP multicast routing.  These objects are independent of the
   specific multicast routing protocol in use.  Managed objects specific
   to particular multicast protocols are defined elsewhere.

2.  History

   This document obsoletes [RFC2932].  The MIB module defined by this
   document is a re-working of the MIB module from [RFC2932], with
   changes that include the following.

   o  This MIB module is includes support for IPv6 addressing and the
      IPv6 scoped address architecture.  [RFC2932] supported only IPv4.

   o  This MIB module allows several multicast protocols to perform
      routing on a single interface, where [RFC2932] assumed each
      interface supported at most one multicast routing protocol.

   o  This MIB module includes objects that are not specific to
      multicast routing.  It allows management of multicast function on
      systems that do not perform routing, whereas RFC 2932 was
      restricted to multicast routing.

   o  This MIB module includes a table of Source-Specific Multicast
      (SSM) address ranges to which SSM semantics [RFC3569] should be
      applied.

   o  This MIB module includes a table of local applications that are
      receiving multicast data.

   o  This MIB module includes a table of multicast scope zones.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

3.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the



McWalter, et al.        Expires January 18, 2007                [Page 3]

Internet-Draft                IP MCAST MIB                     July 2006


   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   ([RFC2578], [RFC2579] and [RFC2580]).

4.  Overview

   This MIB module contains two scalars and seven tables.  The tables
   are:

   1.  The IP Multicast Interface Table containing multicast information
       specific to interfaces.

   2.  The IP Multicast SSM Range Table, which contains one row per
       range of multicast group addresses to which Source-Specific
       Multicast semantics [RFC3569] should be applied.

   3.  The IP Multicast Route Table containing multicast routing
       information for IP datagrams sent by particular sources to the IP
       multicast groups known to a system.

   4.  The IP Multicast Routing Next Hop Table containing information on
       next-hops for the routing of IP multicast datagrams.  Each entry
       is one of a list of next-hops on outgoing interfaces for
       particular sources sending to a particular multicast group
       address.

   5.  The IP Multicast Scope Boundary Table containing the boundaries
       configured for multicast scopes [RFC2365].

   6.  The IP Multicast Scope Name Table containing human-readable names
       of multicast scope.

   7.  The IP Multicast Local Listener Table containing identifiers for
       local applications that are receiving multicast data.

   This MIB module uses textual conventions defined in the IF-MIB
   [RFC2863], the INET-ADDRESS-MIB [RFC4001] and the IANA-RTPROTO-MIB.

5.  Definitions

IPMCAST-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE,
    mib-2, Unsigned32, Counter32,
    Counter64, Gauge32, TimeTicks    FROM SNMPv2-SMI
    RowStatus, TEXTUAL-CONVENTION,
    TruthValue, StorageType,



McWalter, et al.        Expires January 18, 2007                [Page 4]

Internet-Draft                IP MCAST MIB                     July 2006


    TimeStamp                        FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP  FROM SNMPv2-CONF
    SnmpAdminString                  FROM SNMP-FRAMEWORK-MIB
    InterfaceIndexOrZero,
    InterfaceIndex                   FROM IF-MIB
    IANAipRouteProtocol,
    IANAipMRouteProtocol             FROM IANA-RTPROTO-MIB
    InetAddress, InetAddressType,
    InetAddressPrefixLength,
    InetZoneIndex                    FROM INET-ADDRESS-MIB;

ipMcastMIB MODULE-IDENTITY
    LAST-UPDATED "200607170000Z" -- 17 July 2006
    ORGANIZATION "IETF MBONED Working Group"
    CONTACT-INFO "David McWalter
                  Data Connection Limited
                  100 Church Street
                  Enfield, EN2 6BQ
                  UK

                  Phone: +44 208 366 1177
                  EMail: dmcw@dataconnection.com

                  Dave Thaler
                  Microsoft Corporation
                  One Microsoft Way
                  Redmond, WA 98052-6399
                  US

                  Phone: +1 425 703 8835
                  EMail: dthaler@dthaler.microsoft.com

                  Andrew Kessler
                  Cisco Systems
                  425 E. Tasman Drive
                  San Jose, CA 95134
                  US

                  Phone: +1 408 526 5139
                  EMail: kessler@cisco.com"
    DESCRIPTION
            "The MIB module for management of IP Multicast function.

            This MIB module contains information about IP Multicast
            routing, data forwarding, and data reception.  This MIB
            module is independent of the multicast protocol(s) and
            address type(s) that are in use.




McWalter, et al.        Expires January 18, 2007                [Page 5]

Internet-Draft                IP MCAST MIB                     July 2006


            Copyright (C) The Internet Society (2006).  This version of
            this MIB module is part of RFC yyyy; see the RFC itself for
            full legal notices."
    -- RFC Ed.: replace yyyy with actual RFC number & remove this note
    REVISION     "200607170000Z" -- 17 July 2006
    DESCRIPTION
           "Changes from RFC 2932:

            1) This MIB module is independent of address type, whereas
               RFC 2932 only supported IPv4.
            2) This MIB module allows several multicast protocols to
               perform routing on a single interface, whereas RFC 2932
               assumed each interface supported at most one multicast
               routing protocol.  This MIB module retains but deprecates
               the object ipMcastInterfaceProtocol.
            3) This MIB module includes objects that are not specific to
               multicast routing.  It allows management of multicast
               function on systems that do not perform routing, whereas
               RFC 2932 was restricted to multicast routing.
            4) This MIB module includes a table of Source-Specific
               Multicast (SSM) address ranges to which RFC 3569 SSM
               semantics should be applied.
            5) This MIB module includes a table of local applications
               that are receiving multicast data.

            Published as RFC yyyy."
    -- RFC Ed.: replace yyyy with actual RFC number & remove this note
    ::= { mib-2 XXX }
    -- RFC Ed.: replace XXX with IANA-assigned number & remove this note

--
-- Textual conventions
--

LanguageTag ::= TEXTUAL-CONVENTION

   DISPLAY-HINT "99a"
   STATUS      current
   DESCRIPTION
            "A language tag with all alphabetic characters converted to
            lowercase.  This restriction is intended to make the lexical
            ordering imposed by SNMP useful when applied to language
            tags.  Note that it is theoretically possible for a valid
            language tag to exceed the allowed length of this syntax,
            and thus be impossible to represent with this syntax.
            Sampling of language tags in current use on the Internet
            suggests that this limit does not pose a serious problem in
            practice."



McWalter, et al.        Expires January 18, 2007                [Page 6]

Internet-Draft                IP MCAST MIB                     July 2006


   REFERENCE "RFC 3283"
   SYNTAX      OCTET STRING (SIZE (1..99))

--
-- Top-level structure of the MIB
--

ipMcastMIBObjects OBJECT IDENTIFIER ::= { ipMcastMIB 1 }

ipMcast      OBJECT IDENTIFIER ::= { ipMcastMIBObjects 1 }

ipMcastEnable OBJECT-TYPE
    SYNTAX     INTEGER { enabled(1), disabled(2) }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
            "The enabled status of IP Multicast function on this
            system."
    ::= { ipMcast 1 }

ipMcastRouteEntryCount OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of rows in the ipMcastRouteTable.  This can be
            used to check for multicast routing activity, and to monitor
            the multicast routing table size."
    ::= { ipMcast 7 }

--
--  The Multicast Interface Table
--

ipMcastInterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table used to manage the multicast
            protocol active on an interface."
    ::= { ipMcast 4 }

ipMcastInterfaceEntry OBJECT-TYPE
    SYNTAX     IpMcastInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION



McWalter, et al.        Expires January 18, 2007                [Page 7]

Internet-Draft                IP MCAST MIB                     July 2006


            "An entry (conceptual row) containing the multicast protocol
            information for a particular interface."
    INDEX      { ipMcastInterfaceIfIndex }
    ::= { ipMcastInterfaceTable 1 }

IpMcastInterfaceEntry ::= SEQUENCE {
    ipMcastInterfaceIfIndex          InterfaceIndex,
    ipMcastInterfaceTtl              Unsigned32,
    ipMcastInterfaceProtocol         IANAipMRouteProtocol,
    ipMcastInterfaceRateLimit        Unsigned32,
    ipMcastInterfaceInMcastOctets    Counter32,
    ipMcastInterfaceOutMcastOctets   Counter32,
    ipMcastInterfaceInMcastPkts      Counter32,
    ipMcastInterfaceOutMcastPkts     Counter32,
    ipMcastInterfaceHCInMcastOctets  Counter64,
    ipMcastInterfaceHCOutMcastOctets Counter64,
    ipMcastInterfaceHCInMcastPkts    Counter64,
    ipMcastInterfaceHCOutMcastPkts   Counter64
}

ipMcastInterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The ifIndex value of the interface for which this entry
            contains information."
    ::= { ipMcastInterfaceEntry 1 }

ipMcastInterfaceTtl OBJECT-TYPE
    SYNTAX     Unsigned32 (0..255)
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
            "The datagram TTL threshold for the interface.  Any IP
            multicast datagrams with a TTL (IPv4) or Hop Limit (IPv6)
            less than this threshold will not be forwarded out the
            interface.  The default value of 0 means all multicast
            packets are forwarded out the interface."
    DEFVAL     { 0 }
    ::= { ipMcastInterfaceEntry 2 }

ipMcastInterfaceProtocol OBJECT-TYPE
    SYNTAX     IANAipMRouteProtocol
    MAX-ACCESS read-write
    STATUS     deprecated
    DESCRIPTION
            "The multicast protocol running on this interface.



McWalter, et al.        Expires January 18, 2007                [Page 8]

Internet-Draft                IP MCAST MIB                     July 2006


            More than one multicast protocol can be used on an
            interface, so this object is ambiguous.  Use of this
            object is deprecated."
    ::= { ipMcastInterfaceEntry 3 }

ipMcastInterfaceRateLimit OBJECT-TYPE
    SYNTAX     Unsigned32 (0..2147483647)
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
            "The rate-limit, in kilobits per second, of forwarded
            multicast traffic on the interface.  A rate-limit of 0
            indicates that no rate limiting is done."
    DEFVAL     { 0 }
    ::= { ipMcastInterfaceEntry 4 }

ipMcastInterfaceInMcastOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have arrived
            on the interface, including framing characters.  This object
            is similar to ifInOctets in the Interfaces MIB, except that
            only multicast packets are counted."
    ::= { ipMcastInterfaceEntry 5 }

ipMcastInterfaceOutMcastOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have been
            sent on the interface."
    ::= { ipMcastInterfaceEntry 6 }

ipMcastInterfaceInMcastPkts OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of multicast packets that have arrived on the
            interface.  In many cases, this object is identical to
            ifInMulticastPkts in the Interfaces MIB.

            However, some implementations use ifXTable for Layer 2
            traffic statistics and ipMcastInterfaceTable at Layer 3.  In
            this case a difference between these objects probably



McWalter, et al.        Expires January 18, 2007                [Page 9]

Internet-Draft                IP MCAST MIB                     July 2006


            indicates that some Layer 3 multicast packets are being
            transmitted as unicast at Layer 2."
    REFERENCE "RFC 2863 ifInMulticastPkts"
    ::= { ipMcastInterfaceEntry 7 }

ipMcastInterfaceOutMcastPkts OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of multicast packets that have been sent on the
            interface.  In many cases, this object is identical to
            ifOutMulticastPkts in the Interfaces MIB.

            However, some implementations use ifXTable for Layer 2
            traffic statistics and ipMcastInterfaceTable at Layer 3.  In
            this case a difference between these objects probably
            indicates that some Layer 3 multicast packets are being
            transmitted as unicast at Layer 2."
    REFERENCE "RFC 2863 ifOutMulticastPkts"
    ::= { ipMcastInterfaceEntry 8 }

ipMcastInterfaceHCInMcastOctets OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have arrived
            on the interface, including framing characters.  This object
            is a 64-bit version of ipMcastRouteInterfaceInMcastOctets.
            It is similar to ifHCInOctets in the Interfaces MIB, except
            that only multicast packets are counted."
    ::= { ipMcastInterfaceEntry 9 }

ipMcastInterfaceHCOutMcastOctets OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have been
            sent on the interface.  This object is a 64-bit version of
            ipMcastRouteInterfaceOutMcastOctets."
    ::= { ipMcastInterfaceEntry 10 }

ipMcastInterfaceHCInMcastPkts OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current



McWalter, et al.        Expires January 18, 2007               [Page 10]

Internet-Draft                IP MCAST MIB                     July 2006


    DESCRIPTION
            "The number of multicast packets that have arrived on the
            interface.  In many cases, this object is identical to
            ifHCInMulticastPkts in the Interfaces MIB.

            However, some implementations use ifXTable for Layer 2
            traffic statistics and ipMcastInterfaceTable at Layer 3.  In
            this case a difference between these objects probably
            indicates that some Layer 3 multicast packets are being
            transmitted as unicast at Layer 2."
    REFERENCE "RFC 2863 ifHCInMulticastPkts"
    ::= { ipMcastInterfaceEntry 11 }

ipMcastInterfaceHCOutMcastPkts OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of multicast packets that have been sent on the
            interface.  In many cases, this object is identical to
            ifHCOutMulticastPkts in the Interfaces MIB.

            However, some implementations use ifXTable for Layer 2
            traffic statistics and ipMcastInterfaceTable at Layer 3.  In
            this case a difference between these objects probably
            indicates that some Layer 3 multicast packets are being
            transmitted as unicast at Layer 2."
    REFERENCE "RFC 2863 ifHCOutMulticastPkts"
    ::= { ipMcastInterfaceEntry 12 }

--
-- The SSM Range Table
--

ipMcastSsmRangeTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastSsmRangeEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "This table is used to create and manage the range(s) of
            group addresses to which SSM semantics should be applied."
    REFERENCE "RFC 3569"
    ::= { ipMcast 8 }

ipMcastSsmRangeEntry OBJECT-TYPE
    SYNTAX     IpMcastSsmRangeEntry
    MAX-ACCESS not-accessible
    STATUS     current



McWalter, et al.        Expires January 18, 2007               [Page 11]

Internet-Draft                IP MCAST MIB                     July 2006


    DESCRIPTION
            "An entry (conceptual row) containing a range of group
            addresses to which SSM semantics should be applied."
    REFERENCE "RFC 3569"
    INDEX      { ipMcastSsmRangeAddressType,
                 ipMcastSsmRangeAddress,
                 ipMcastSsmRangePrefixLength }
    ::= { ipMcastSsmRangeTable 1 }

IpMcastSsmRangeEntry ::= SEQUENCE {
    ipMcastSsmRangeAddressType   InetAddressType,
    ipMcastSsmRangeAddress       InetAddress,
    ipMcastSsmRangePrefixLength  InetAddressPrefixLength,
    ipMcastSsmRangeRowStatus     RowStatus,
    ipMcastSsmRangeStorageType   StorageType
}

ipMcastSsmRangeAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the multicast group prefix."
    ::= { ipMcastSsmRangeEntry 1 }

ipMcastSsmRangeAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The multicast group address which, when combined with
            ipMcastSsmRangePrefixLength, gives the group prefix for this
            SSM range.  The InetAddressType is given by
            ipMcastSsmRangeAddressType.

            This address object is only significant up to
            ipMcastSsmRangePrefixLength bits.  The remainder of the
            address bits are zero.  This is especially important for
            this index field, which is part of the index of this entry.
            Any non-zero bits would signify an entirely different
            entry.

            For IPv6 SSM address ranges, only ranges prefixed by
            FF3x::/16 are permitted, where 'x' is a valid IPv6 RFC 4291
            multicast address scope.  The syntax of the address range is
            given by RFC 3306 sections 4 and 7.

            For addresses of type ipv4z or ipv6z, the appended zone



McWalter, et al.        Expires January 18, 2007               [Page 12]

Internet-Draft                IP MCAST MIB                     July 2006


            index is significant even though it lies beyond the prefix
            length.  The use of these address types indicate that this
            SSM range entry applies only within the given zone.  Zone
            index zero is not valid in this table.

            If non-global scope SSM range entries are present, then
            consistent ipMcastBoundaryTable entries are required on
            routers at the zone boundary."
    REFERENCE "RFC 2365, RFC 4291 section 2.7, RFC 3306 sections 4, 6
            and 7"
    ::= { ipMcastSsmRangeEntry 2 }

ipMcastSsmRangePrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined with
            ipMcastSsmRangeAddress, gives the group prefix for this SSM
            range.  The InetAddressType is given by
            ipMcastSsmRangeAddressType.  For values 'ipv4' and 'ipv4z',
            this object must be in the range 4..32.  For values 'ipv6'
            and 'ipv6z', this object must be in the range 8..128."
    REFERENCE "RFC 2365, RFC 4291 section 2.7, RFC 3306 sections 4, 6
            and 7"
    ::= { ipMcastSsmRangeEntry 3 }

ipMcastSsmRangeRowStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The status of this row, by which rows in this table can
            be created and destroyed.

            This status object can be set to active(1) without setting
            any other columnar objects in this entry.

            All writeable objects in this entry can be modified when the
            status of this entry is active(1)."
    ::= { ipMcastSsmRangeEntry 4 }

ipMcastSsmRangeStorageType OBJECT-TYPE
    SYNTAX      StorageType
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The storage type for this row.  Rows having the value



McWalter, et al.        Expires January 18, 2007               [Page 13]

Internet-Draft                IP MCAST MIB                     July 2006


           'permanent' need not allow write-access to any columnar
           objects in the row."
       DEFVAL { nonVolatile }
    ::= { ipMcastSsmRangeEntry 5 }

--
--  The IP Multicast Routing Table
--

ipMcastRouteTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastRouteEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table containing multicast routing
            information for IP datagrams sent by particular sources to
            to the IP multicast groups known to this router."
    ::= { ipMcast 2 }

ipMcastRouteEntry OBJECT-TYPE
    SYNTAX     IpMcastRouteEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) containing the multicast routing
            information for IP datagrams from a particular source and
            addressed to a particular IP multicast group address."
    INDEX      { ipMcastRouteGroupAddressType,
                 ipMcastRouteGroup,
                 ipMcastRouteGroupPrefixLength,
                 ipMcastRouteSourceAddressType,
                 ipMcastRouteSource,
                 ipMcastRouteSourcePrefixLength }
    ::= { ipMcastRouteTable 1 }

IpMcastRouteEntry ::= SEQUENCE {
    ipMcastRouteGroupAddressType      InetAddressType,
    ipMcastRouteGroup                 InetAddress,
    ipMcastRouteGroupPrefixLength     InetAddressPrefixLength,
    ipMcastRouteSourceAddressType     InetAddressType,
    ipMcastRouteSource                InetAddress,
    ipMcastRouteSourcePrefixLength    InetAddressPrefixLength,
    ipMcastRouteUpstreamNeighborType  InetAddressType,
    ipMcastRouteUpstreamNeighbor      InetAddress,
    ipMcastRouteInIfIndex             InterfaceIndexOrZero,
    ipMcastRouteTimeStamp             TimeStamp,
    ipMcastRouteExpiryTime            TimeTicks,
    ipMcastRoutePkts                  Counter32,



McWalter, et al.        Expires January 18, 2007               [Page 14]

Internet-Draft                IP MCAST MIB                     July 2006


    ipMcastRouteDifferentInIfPackets  Counter32,
    ipMcastRouteOctets                Counter32,
    ipMcastRouteProtocol              IANAipMRouteProtocol,
    ipMcastRouteRtProtocol            IANAipRouteProtocol,
    ipMcastRouteRtAddressType         InetAddressType,
    ipMcastRouteRtAddress             InetAddress,
    ipMcastRouteRtPrefixLength        InetAddressPrefixLength,
    ipMcastRouteRtType                INTEGER,
    ipMcastRouteHCOctets              Counter64,
    ipMcastRouteDifferentInIfOctets   Counter32,
    ipMcastRouteTtlDropPackets        Counter32,
    ipMcastRouteTtlDropOctets         Counter32
}

ipMcastRouteGroupAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteGroup.  Legal values correspond to
            the subset of address families for which multicast
            forwarding is supported."
    ::= { ipMcastRouteEntry 1 }

ipMcastRouteGroup OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address which, when combined with
            the corresponding value specified in
            ipMcastRouteGroupPrefixLength, identifies the groups for
            which this entry contains multicast routing information.

            This address object is only significant up to
            ipMcastRouteGroupPrefixLength bits.  The remainder of the
            address bits are zero.  This is especially important for
            this index field, which is part of the index of this entry.
            Any non-zero bits would signify an entirely different
            entry."
    ::= { ipMcastRouteEntry 2 }

ipMcastRouteGroupPrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION



McWalter, et al.        Expires January 18, 2007               [Page 15]

Internet-Draft                IP MCAST MIB                     July 2006


            "The length in bits of the mask which, when combined with
            the corresponding value of ipMcastRouteGroup, identifies the
            groups for which this entry contains multicast routing
            information."
    ::= { ipMcastRouteEntry 3 }

ipMcastRouteSourceAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteSource.  The value MUST be the same
            as the value of ipMcastRouteGroupType."
    ::= { ipMcastRouteEntry 4 }

ipMcastRouteSource OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The network address which, when combined with the
            corresponding value of ipMcastRouteSourcePrefixLength,
            identifies the sources for which this entry contains
            multicast routing information.

            This address object is only significant up to
            ipMcastRouteGroupPrefixLength bits.  The remainder of the
            address bits are zero.  This is especially important for
            this index field, which is part of the index of this entry.
            Any non-zero bits would signify an entirely different
            entry."
    ::= { ipMcastRouteEntry 5 }

ipMcastRouteSourcePrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined with
            the corresponding value of ipMcastRouteSource, identifies
            the sources for which this entry contains multicast routing
            information."
    ::= { ipMcastRouteEntry 6 }

ipMcastRouteUpstreamNeighborType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS read-only



McWalter, et al.        Expires January 18, 2007               [Page 16]

Internet-Draft                IP MCAST MIB                     July 2006


    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteUpstreamNeighbor.  The value MUST
            be the same as the value of ipMcastRouteGroupType."
    ::= { ipMcastRouteEntry 7 }

ipMcastRouteUpstreamNeighbor OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address of the upstream neighbor (for example, RPF
            neighbor) from which IP datagrams from these sources to
            this multicast address are received.  If the upstream
            neighbor is unknown, then ipMcastRouteUpstreamNeighbor
            will be 0.0.0.0 in the case of an IPv4 entry, and
            0:0:0:0:0:0:0:0 in the case of an IPv6 entry (for example,
            in BIDIR-PIM)."
    ::= { ipMcastRouteEntry 8 }

ipMcastRouteInIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndexOrZero
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The value of ifIndex for the interface on which IP
            datagrams sent by these sources to this multicast address
            are received.  A value of 0 indicates that datagrams are not
            subject to an incoming interface check, but may be accepted
            on multiple interfaces (for example, in BIDIR-PIM)."
    ::= { ipMcastRouteEntry 9 }

ipMcastRouteTimeStamp OBJECT-TYPE
    SYNTAX     TimeStamp
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The value of sysUpTime at which the multicast routing
            information represented by this entry was learned by the
            router."
    ::= { ipMcastRouteEntry 10 }

ipMcastRouteExpiryTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION



McWalter, et al.        Expires January 18, 2007               [Page 17]

Internet-Draft                IP MCAST MIB                     July 2006


            "The minimum amount of time remaining before this entry will
            be aged out.  The value 0 indicates that the entry is not
            subject to aging.  If ipMcastRouteNextHopState is pruned(1),
            this object represents the remaining time until the prune
            expires. If this timer expires, state reverts to
            forwarding(2). Otherwise, this object represents the time
            until this entry is removed from the table."
    ::= { ipMcastRouteEntry 11 }

ipMcastRoutePkts OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of packets routed using this multicast route
            entry.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 12 }

ipMcastRouteDifferentInIfPackets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of packets which this router has received from
            these sources and addressed to this multicast group address,
            which were dropped because they were received on an
            unexpected interface.

            For RPF checking protocols (such as PIM-SM), these packets
            arrived on interfaces other than ipMcastRouteInIfIndex, and
            were dropped because of this failed RPF check.  (RPF paths
            are 'Reverse Path Forwarding' path; the unicast routes to
            the expected origin of multicast data flows).

            Other protocols may drop packets on an incoming interface
            check for different reasons (for example, BIDIR-PIM performs
            a DF check on receipt of packets).  All packets dropped as a
            result of an incoming interface check are counted here.

            If this counter increases rapidly, this indicates a problem.
            A significant quantity of multicast data is arriving at this
            router on unexpected interfaces, and is not being forwarded.



McWalter, et al.        Expires January 18, 2007               [Page 18]

Internet-Draft                IP MCAST MIB                     July 2006


            For guidance, if the rate of increase of this counter
            exceeds 1% of the rate of increase of ipMcastRoutePkts, then
            there are multicast routing problems that require
            investigation.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 13 }

ipMcastRouteOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets contained in IP datagrams which were
            received from these sources and addressed to this multicast
            group address, and which were forwarded by this router.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 14 }

ipMcastRouteProtocol OBJECT-TYPE
    SYNTAX     IANAipMRouteProtocol
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The multicast routing protocol via which this multicast
            forwarding entry was learned."
    ::= { ipMcastRouteEntry 15 }

ipMcastRouteRtProtocol OBJECT-TYPE
    SYNTAX     IANAipRouteProtocol
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The routing mechanism via which the route used to find the
            upstream or parent interface for this multicast forwarding
            entry was learned.  Inclusion of values for routing
            protocols is not intended to imply that those protocols need
            be supported."
    ::= { ipMcastRouteEntry 16 }



McWalter, et al.        Expires January 18, 2007               [Page 19]

Internet-Draft                IP MCAST MIB                     July 2006


ipMcastRouteRtAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteRtAddress.  The value MUST be the
            same as the value of ipMcastRouteGroupType."
    ::= { ipMcastRouteEntry 17 }

ipMcastRouteRtAddress OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address portion of the route used to find the upstream
            or parent interface for this multicast forwarding entry.

            This address object is only significant up to
            ipMcastRouteGroupPrefixLength bits.  The remainder of the
            address bits are zero."
    ::= { ipMcastRouteEntry 18 }

ipMcastRouteRtPrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask associated with the route
            used to find the upstream or parent interface for this
            multicast forwarding entry."
    ::= { ipMcastRouteEntry 19 }

ipMcastRouteRtType OBJECT-TYPE
    SYNTAX     INTEGER {
                unicast (1),  -- Unicast route used in multicast RIB
                multicast (2) -- Multicast route
               }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The reason the given route was placed in the (logical)
            multicast Routing Information Base (RIB).  A value of
            unicast means that the route would normally be placed only
            in the unicast RIB, but was placed in the multicast RIB
            (instead or in addition) due to local configuration, such as
            when running PIM over RIP.  A value of multicast means that
            the route was explicitly added to the multicast RIB by the



McWalter, et al.        Expires January 18, 2007               [Page 20]

Internet-Draft                IP MCAST MIB                     July 2006


            routing protocol, such as DVMRP or Multiprotocol BGP."
    ::= { ipMcastRouteEntry 20 }

ipMcastRouteHCOctets OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets contained in IP datagrams which were
            received from these sources and addressed to this multicast
            group address, and which were forwarded by this router.
            This object is a 64-bit version of ipMcastRouteOctets.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 21 }

ipMcastRouteDifferentInIfOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets contained in IP datagrams which this
            router has received from these sources and addressed to this
            multicast group address, which were dropped because they
            were received on an unexpected interface.

            For RPF checking protocols (such as PIM-SM), these packets
            arrived on interfaces other than ipMcastRouteInIfIndex, and
            were dropped because of this failed RPF check.  (RPF paths
            are 'Reverse Path Forwarding' path; the unicast routes to
            the expected origin of multicast data flows).

            Other protocols may drop packets on an incoming interface
            check for different reasons (for example, BIDIR-PIM performs
            a DF check on receipt of packets).  All packets dropped as a
            result of an incoming interface check are counted here.

            If this counter increases rapidly, this indicates a problem.
            A significant quantity of multicast data is arriving at this
            router on unexpected interfaces, and is not being forwarded.

            For guidance, if the rate of increase of this counter
            exceeds 1% of the rate of increase of ipMcastRouteOctets,
            then there are multicast routing problems that require



McWalter, et al.        Expires January 18, 2007               [Page 21]

Internet-Draft                IP MCAST MIB                     July 2006


            investigation.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 22 }

ipMcastRouteTtlDropPackets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of packets which this router has received from
            these sources and addressed to this multicast group address,
            which were dropped because the TTL (IPv4) or Hop Limit
            (IPv6) was decremented to zero, or to a value less than
            ipMcastInterfaceTtl for all next hops.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 23 }

ipMcastRouteTtlDropOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets contained in IP datagrams which this
            router has received from these sources and addressed to this
            multicast group address, which were dropped because the TTL
            (IPv4) or Hop Limit (IPv6) was decremented to zero, or to a
            value less than ipMcastInterfaceTtl for all next hops.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteTimeStamp."
    ::= { ipMcastRouteEntry 24 }

--
--  The IP Multicast Routing Next Hop Table
--



McWalter, et al.        Expires January 18, 2007               [Page 22]

Internet-Draft                IP MCAST MIB                     July 2006


ipMcastRouteNextHopTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastRouteNextHopEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table containing information on the
            next-hops on outgoing interfaces for routing IP multicast
            datagrams.  Each entry is one of a list of next-hops on
            outgoing interfaces for particular sources sending to a
            particular multicast group address."
    ::= { ipMcast 3 }

ipMcastRouteNextHopEntry OBJECT-TYPE
    SYNTAX     IpMcastRouteNextHopEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the list of next-hops on
            outgoing interfaces to which IP multicast datagrams from
            particular sources to an IP multicast group address are
            routed."
    INDEX      { ipMcastRouteNextHopGroupAddressType,
                 ipMcastRouteNextHopGroup,
                 ipMcastRouteNextHopSourceAddressType,
                 ipMcastRouteNextHopSource,
                 ipMcastRouteNextHopSourcePrefixLength,
                 ipMcastRouteNextHopIfIndex,
                 ipMcastRouteNextHopAddressType,
                 ipMcastRouteNextHopAddress }
    ::= { ipMcastRouteNextHopTable 1 }

IpMcastRouteNextHopEntry ::= SEQUENCE {
    ipMcastRouteNextHopGroupAddressType    InetAddressType,
    ipMcastRouteNextHopGroup               InetAddress,
    ipMcastRouteNextHopSourceAddressType   InetAddressType,
    ipMcastRouteNextHopSource              InetAddress,
    ipMcastRouteNextHopSourcePrefixLength  InetAddressPrefixLength,
    ipMcastRouteNextHopIfIndex             InterfaceIndex,
    ipMcastRouteNextHopAddressType         InetAddressType,
    ipMcastRouteNextHopAddress             InetAddress,
    ipMcastRouteNextHopState               INTEGER,
    ipMcastRouteNextHopTimeStamp           TimeStamp,
    ipMcastRouteNextHopExpiryTime          TimeTicks,
    ipMcastRouteNextHopClosestMemberHops   Unsigned32,
    ipMcastRouteNextHopProtocol            IANAipMRouteProtocol,
    ipMcastRouteNextHopPkts                Counter32,
    ipMcastRouteNextHopOctets              Counter32
}



McWalter, et al.        Expires January 18, 2007               [Page 23]

Internet-Draft                IP MCAST MIB                     July 2006


ipMcastRouteNextHopGroupAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteNextHopGroup.  Legal values
            correspond to the subset of address families for which
            multicast forwarding is supported."
    ::= { ipMcastRouteNextHopEntry 1 }

ipMcastRouteNextHopGroup OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group for which this entry specifies a
            next-hop on an outgoing interface."
    ::= { ipMcastRouteNextHopEntry 2 }

ipMcastRouteNextHopSourceAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteNextHopSource.  The value MUST be
            the same as the value of ipMcastRouteNextHopGroupType."
    ::= { ipMcastRouteNextHopEntry 3 }

ipMcastRouteNextHopSource OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The network address which, when combined with the
            corresponding value of the mask specified in
            ipMcastRouteNextHopSourcePrefixLength, identifies the
            sources for which this entry specifies a next-hop on an
            outgoing interface.

            This address object is only significant up to
            ipMcastRouteNextHopSourcePrefixLength bits.  The remainder
            of the address bits are zero.  This is especially important
            for this index field, which is part of the index of this
            entry.  Any non-zero bits would signify an entirely
            different entry."
    ::= { ipMcastRouteNextHopEntry 4 }



McWalter, et al.        Expires January 18, 2007               [Page 24]

Internet-Draft                IP MCAST MIB                     July 2006


ipMcastRouteNextHopSourcePrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined with
            the corresponding value specified in
            ipMcastRouteNextHopSource, identifies the sources for which
            this entry specifies a next-hop on an outgoing interface."
    ::= { ipMcastRouteNextHopEntry 5 }

ipMcastRouteNextHopIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The ifIndex value of the interface for the outgoing
            interface for this next-hop."
    ::= { ipMcastRouteNextHopEntry 6 }

ipMcastRouteNextHopAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastRouteNextHopAddress.  The value MUST be
            the same as the value of ipMcastRouteNextHopGroupType."
    ::= { ipMcastRouteNextHopEntry 7 }

ipMcastRouteNextHopAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address of the next-hop specific to this entry.  For
            most interfaces, this is identical to
            ipMcastRouteNextHopGroup.  NBMA interfaces, however, may
            have multiple next-hop addresses out a single outgoing
            interface."
    ::= { ipMcastRouteNextHopEntry 8 }

ipMcastRouteNextHopState OBJECT-TYPE
    SYNTAX     INTEGER { pruned(1), forwarding(2) }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "An indication of whether the outgoing interface and next-



McWalter, et al.        Expires January 18, 2007               [Page 25]

Internet-Draft                IP MCAST MIB                     July 2006


            hop represented by this entry is currently being used to
            forward IP datagrams.  The value 'forwarding' indicates it
            is currently being used; the value 'pruned' indicates it is
            not."
    ::= { ipMcastRouteNextHopEntry 9 }

ipMcastRouteNextHopTimeStamp OBJECT-TYPE
    SYNTAX     TimeStamp
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The value of sysUpTime at which the multicast routing
            information represented by this entry was learned by the
            router."
    ::= { ipMcastRouteNextHopEntry 10 }

ipMcastRouteNextHopExpiryTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The minimum amount of time remaining before this entry will
            be aged out.  If ipMcastRouteNextHopState is pruned(1), the
            remaining time until the prune expires and the state reverts
            to forwarding(2).  Otherwise, the remaining time until this
            entry is removed from the table.  The time remaining may be
            copied from ipMcastRouteExpiryTime if the protocol in use
            for this entry does not specify next-hop timers.  The value
            0 indicates that the entry is not subject to aging."
    ::= { ipMcastRouteNextHopEntry 11 }

ipMcastRouteNextHopClosestMemberHops OBJECT-TYPE
    SYNTAX     Unsigned32 (0..255)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The minimum number of hops between this router and any
            member of this IP multicast group reached via this next-hop
            on this outgoing interface.  Any IP multicast datagrams for
            the group which have a TTL (IPv4) or Hop Count (IPv6) less
            than this number of hops will not be forwarded to this
            next-hop.

            This is an optimization applied by multicast routing
            protocols that explicitly track hop counts to downstream
            listeners.  Multicast protocols that are not aware of hop
            counts to downstream listeners set this object to zero."
    ::= { ipMcastRouteNextHopEntry 12 }



McWalter, et al.        Expires January 18, 2007               [Page 26]

Internet-Draft                IP MCAST MIB                     July 2006


ipMcastRouteNextHopProtocol OBJECT-TYPE
    SYNTAX     IANAipMRouteProtocol
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The routing mechanism via which this next-hop was learned."
    ::= { ipMcastRouteNextHopEntry 13 }

ipMcastRouteNextHopPkts OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of packets which have been forwarded using this
            route.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteNextHopTimeStamp."
    ::= { ipMcastRouteNextHopEntry 14 }

ipMcastRouteNextHopOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have been
            forwarded using this route.

            Discontinuities in this monotonically increasing value
            occur at re-initialization of the management system.
            Discontinuities can also occur as a result of routes being
            removed and replaced, which can be detected by observing
            the value of ipMcastRouteNextHopTimeStamp."
    ::= { ipMcastRouteNextHopEntry 15 }

--
--  The IP Multicast Scope Boundary Table
--

ipMcastBoundaryTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastBoundaryEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the system's multicast scope



McWalter, et al.        Expires January 18, 2007               [Page 27]

Internet-Draft                IP MCAST MIB                     July 2006


            zone boundaries."
    REFERENCE "RFC 4007 section 5"
    ::= { ipMcast 5 }

ipMcastBoundaryEntry OBJECT-TYPE
    SYNTAX     IpMcastBoundaryEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) describing one of this device's
            multicast scope zone boundaries."
    REFERENCE "RFC 2365 section 5, RFC 4007 section 5"
    INDEX      { ipMcastBoundaryIfIndex,
                 ipMcastBoundaryAddressType,
                 ipMcastBoundaryAddress,
                 ipMcastBoundaryAddressPrefixLength }
    ::= { ipMcastBoundaryTable 1 }

IpMcastBoundaryEntry ::= SEQUENCE {
    ipMcastBoundaryIfIndex              InterfaceIndex,
    ipMcastBoundaryAddressType          InetAddressType,
    ipMcastBoundaryAddress              InetAddress,
    ipMcastBoundaryAddressPrefixLength  InetAddressPrefixLength,
    ipMcastBoundaryStatus               RowStatus,
    ipMcastBoundaryStorageType          StorageType,
    ipMcastBoundaryDroppedMcastOctets   Counter32,
    ipMcastBoundaryDroppedMcastPkts     Counter32,
    ipMcastBoundaryHCDroppedMcastOctets Counter64,
    ipMcastBoundaryHCDroppedMcastPkts   Counter64
}

ipMcastBoundaryIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IfIndex value for the interface to which this boundary
            applies.  Packets with a destination address in the
            associated address/mask range will not be forwarded over
            this interface.

            For IPv4, zone boundaries cut through links.  Therefore this
            is an external interface.  This may be either a physical or
            virtual interface (tunnel, encapsulation, and so forth.)

            For IPv6, zone boundaries cut through nodes.  Therefore this
            is a virtual interface within the node.  This is not an
            external interface, either real or virtual.  Packets



McWalter, et al.        Expires January 18, 2007               [Page 28]

Internet-Draft                IP MCAST MIB                     July 2006


            crossing this interface neither arrive at nor leave the
            node, but only move between zones within the node."
    REFERENCE "RFC 2365 section 5, RFC 4007 section 5"
    ::= { ipMcastBoundaryEntry 1 }

ipMcastBoundaryAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastBoundaryAddress.  Legal values
            correspond to the subset of address families for which
            multicast forwarding is supported."
    ::= { ipMcastBoundaryEntry 2 }

ipMcastBoundaryAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The group address which, when combined with the
            corresponding value of ipMcastBoundaryAddressPrefixLength,
            identifies the group range for which the scoped boundary
            exists.  Scoped IPv4 multicast address ranges must be
            prefixed by 239.0.0.0/4.  Scoped IPv6 multicast address
            ranges are FF0x::/16, where x is a valid RFC 4291 multicast
            scope.

            An IPv6 address prefixed by FF1x::/16 is a non-permanently-
            assigned address.  An IPv6 address prefixed by FF3x::/16 is
            a unicast-prefix based multicast addresses.  A zone boundary
            for FF0x::/16 implies an identical boundary for these other
            prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
            in this table.

            This address object is only significant up to
            ipMcastBoundaryAddressPrefixLength bits.  The remainder of
            the address bits are zero.  This is especially important for
            this index field, which is part of the index of this entry.
            Any non-zero bits would signify an entirely different
            entry."
    REFERENCE "RFC 2365, RFC 3306 section 4, RFC 4291 section 2.7"
    ::= { ipMcastBoundaryEntry 3 }

ipMcastBoundaryAddressPrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..32)
    MAX-ACCESS not-accessible



McWalter, et al.        Expires January 18, 2007               [Page 29]

Internet-Draft                IP MCAST MIB                     July 2006


    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which when, combined with
            the corresponding value of ipMcastBoundaryAddress,
            identifies the group range for which the scoped boundary
            exists.

            The InetAddressType is given by ipMcastBoundaryAddressType.
            For 'ipv4' this object must be in the range 4..32.  For
            'ipv6', this object must be 32."
    ::= { ipMcastBoundaryEntry 4 }

ipMcastBoundaryStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The status of this row, by which rows in this table can
            be created and destroyed.

            This status object can be set to active(1) without setting
            any other columnar objects in this entry.

            All writeable objects in this entry can be modified when the
            status of this entry is active(1)."
    ::= { ipMcastBoundaryEntry 5 }

ipMcastBoundaryStorageType OBJECT-TYPE
    SYNTAX      StorageType
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The storage type for this row.  Rows having the value
           'permanent' need not allow write-access to any columnar
           objects in the row."
       DEFVAL { nonVolatile }
    ::= { ipMcastBoundaryEntry 6 }

ipMcastBoundaryDroppedMcastOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have been
            dropped as a result of this zone boundary configuration."
    ::= { ipMcastBoundaryEntry 7 }

ipMcastBoundaryDroppedMcastPkts OBJECT-TYPE



McWalter, et al.        Expires January 18, 2007               [Page 30]

Internet-Draft                IP MCAST MIB                     July 2006


    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of multicast packets that have been dropped as a
            result of this zone boundary configuration."
    ::= { ipMcastBoundaryEntry 8 }

ipMcastBoundaryHCDroppedMcastOctets OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of octets of multicast packets that have been
            dropped as a result of this zone boundary configuration.

            This object is a 64-bit version of
            ipMcastBoundaryDroppedMcastOctets."
    ::= { ipMcastBoundaryEntry 9 }

ipMcastBoundaryHCDroppedMcastPkts OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of multicast packets that have been dropped as a
            result of this zone boundary configuration.

            This object is a 64-bit version of
            ipMcastBoundaryDroppedMcastPkts."
    ::= { ipMcastBoundaryEntry 10 }

--
--  The IP Multicast Scope Name Table
--

ipMcastScopeNameTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastScopeNameEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing multicast scope names."
    REFERENCE "RFC 4007 section 4"
    ::= { ipMcast 6 }

ipMcastScopeNameEntry OBJECT-TYPE
    SYNTAX     IpMcastScopeNameEntry
    MAX-ACCESS not-accessible



McWalter, et al.        Expires January 18, 2007               [Page 31]

Internet-Draft                IP MCAST MIB                     July 2006


    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) that names a multicast address
            scope."
    REFERENCE "RFC 4007 section 4"
    INDEX      { ipMcastScopeNameAddressType,
                 ipMcastScopeNameAddress,
                 ipMcastScopeNameAddressPrefixLength,
                 IMPLIED ipMcastScopeNameLanguage }
    ::= { ipMcastScopeNameTable 1 }

IpMcastScopeNameEntry ::= SEQUENCE {
    ipMcastScopeNameAddressType          InetAddressType,
    ipMcastScopeNameAddress              InetAddress,
    ipMcastScopeNameAddressPrefixLength  InetAddressPrefixLength,
    ipMcastScopeNameLanguage             LanguageTag,
    ipMcastScopeNameString               SnmpAdminString,
    ipMcastScopeNameDefault              TruthValue,
    ipMcastScopeNameStatus               RowStatus,
    ipMcastScopeNameStorageType          StorageType
}

ipMcastScopeNameAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastScopeNameAddress.  Legal values
            correspond to the subset of address families for which
            multicast forwarding is supported."
    ::= { ipMcastScopeNameEntry 1 }

ipMcastScopeNameAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The group address which, when combined with the
            corresponding value of ipMcastScopeNameAddressPrefixLength,
            identifies the group range associated with the multicast
            scope.  Scoped IPv4 multicast address ranges must be
            prefixed by 239.0.0.0/4.  Scoped IPv6 multicast address
            ranges are FF0x::/16, where x is a valid RFC 4291 multicast
            scope.

            An IPv6 address prefixed by FF1x::/16 is a non-permanently-
            assigned address.  An IPv6 address prefixed by FF3x::/16 is



McWalter, et al.        Expires January 18, 2007               [Page 32]

Internet-Draft                IP MCAST MIB                     July 2006


            a unicast-prefix based multicast addresses.  A scope
            FF0x::/16 implies an identical scope name for these other
            prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
            in this table.

            This address object is only significant up to
            ipMcastScopeNameAddressPrefixLength bits.  The remainder of
            the address bits are zero.  This is especially important for
            this index field, which is part of the index of this entry.
            Any non-zero bits would signify an entirely different
            entry."
    REFERENCE "RFC 2365, RFC 3306 section 4, RFC 4291 section 2.7"
    ::= { ipMcastScopeNameEntry 2 }

ipMcastScopeNameAddressPrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..32)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined with
            the corresponding value of ipMcastScopeNameAddress,
            identifies the group range associated with the multicast
            scope.

            The InetAddressType is given by ipMcastScopeNameAddressType.
            For 'ipv4' this object must be in the range 4..32.  For
            'ipv6', this object must be 32."
    ::= { ipMcastScopeNameEntry 3 }

ipMcastScopeNameLanguage OBJECT-TYPE
    SYNTAX     LanguageTag
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "Language tag associated with the scope name."
    REFERENCE "RFC 3283"
    ::= { ipMcastScopeNameEntry 4 }

ipMcastScopeNameString OBJECT-TYPE
    SYNTAX     SnmpAdminString
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The textual name associated with the multicast scope.  The
            value of this object should be suitable for displaying to
            end-users, such as when allocating a multicast address in
            this scope.




McWalter, et al.        Expires January 18, 2007               [Page 33]

Internet-Draft                IP MCAST MIB                     July 2006


            When no name is specified, the default value of this object
            for IPv4 should is the string 239.x.x.x/y with x and y
            replaced with decimal values to describe the address and
            mask length associated with the scope.

            When no name is specified, the default value of this object
            for IPv6 should is the string FF0x::/16, with x replaced by
            the hexadecimal value for the RFC 4291 multicast scope.

            An IPv6 address prefixed by FF1x::/16 is a non-permanently-
            assigned address.  An IPv6 address prefixed by FF3x::/16 is
            a unicast-prefix based multicast addresses.  A scope
            FF0x::/16 implies an identical scope name for these other
            prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
            in this table."
    REFERENCE "RFC 2365, RFC 3306 section 4, RFC 4291 section 2.7"
    ::= { ipMcastScopeNameEntry 5 }

ipMcastScopeNameDefault OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "If true, indicates a preference that the name in the
            following language should be used by applications if no name
            is available in a desired language."
    DEFVAL { false }
    ::= { ipMcastScopeNameEntry 6 }

ipMcastScopeNameStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The status of this row, by which rows in this table can
            be created and destroyed.  Before the row can be activated,
            the object ipMcastScopeNameString must be set to a valid
            value.  All writeable objects in this entry can be modified
            when the status is active(1)."
    ::= { ipMcastScopeNameEntry 7 }

ipMcastScopeNameStorageType OBJECT-TYPE
    SYNTAX      StorageType
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The storage type for this row.  Rows having the value
           'permanent' need not allow write-access to any columnar



McWalter, et al.        Expires January 18, 2007               [Page 34]

Internet-Draft                IP MCAST MIB                     July 2006


           objects in the row."
       DEFVAL { nonVolatile }
    ::= { ipMcastScopeNameEntry 8 }

--
--  The Multicast Listeners Table
--

ipMcastLocalListenerTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastLocalListenerEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing local applications or
            services that have joined multicast groups as listeners.

            Entries exist for all addresses in the multicast range for
            all applications and services as they are classified on this
            device."
    ::= { ipMcast 9 }

ipMcastLocalListenerEntry OBJECT-TYPE
    SYNTAX     IpMcastLocalListenerEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) identifying a local application
            or service that has joined a multicast group as a listener."
    INDEX      { ipMcastLocalListenerGroupAddressType,
                 ipMcastLocalListenerGroupAddress,
                 ipMcastLocalListenerSourceAddressType,
                 ipMcastLocalListenerSourceAddress,
                 ipMcastLocalListenerSourcePrefixLength,
                 ipMcastLocalListenerRunIndex }
    ::= { ipMcastLocalListenerTable 1 }

IpMcastLocalListenerEntry ::= SEQUENCE {
    ipMcastLocalListenerGroupAddressType    InetAddressType,
    ipMcastLocalListenerGroupAddress        InetAddress,
    ipMcastLocalListenerSourceAddressType   InetAddressType,
    ipMcastLocalListenerSourceAddress       InetAddress,
    ipMcastLocalListenerSourcePrefixLength  InetAddressPrefixLength,
    ipMcastLocalListenerRunIndex            Unsigned32
}

ipMcastLocalListenerGroupAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible



McWalter, et al.        Expires January 18, 2007               [Page 35]

Internet-Draft                IP MCAST MIB                     July 2006


    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastLocalListenerGroupAddress.  Legal values
            correspond to the subset of address families for which
            multicast is supported."
    ::= { ipMcastLocalListenerEntry 1 }

ipMcastLocalListenerGroupAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group for which this entry specifies
            locally joined applications or services."
    ::= { ipMcastLocalListenerEntry 2 }

ipMcastLocalListenerSourceAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "A value indicating the address family of the address
            contained in ipMcastLocalListenerSource.  The value MUST be
            the same as the value of ipMcastLocalListenerAddressType."
    ::= { ipMcastLocalListenerEntry 3 }

ipMcastLocalListenerSourceAddress OBJECT-TYPE
    SYNTAX     InetAddress (SIZE (0|4|8|16|20))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The network address which, when combined with the
            corresponding value of the mask specified in
            ipMcastLocalListenerSourcePrefixLength, identifies the
            sources for which this entry specifies a local listener.

            This address object is only significant up to
            ipMcastLocalListenerSourcePrefixLength bits.  The remainder
            of the address bits are zero.  This is especially important
            for this index field, which is part of the index of this
            entry.  Any non-zero bits would signify an entirely
            different entry."
    ::= { ipMcastLocalListenerEntry 4 }

ipMcastLocalListenerSourcePrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..128)
    MAX-ACCESS not-accessible



McWalter, et al.        Expires January 18, 2007               [Page 36]

Internet-Draft                IP MCAST MIB                     July 2006


    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined with
            the corresponding value specified in
            ipMcastLocalListenerSource, identifies the sources for which
            this entry specifies a local listener.  A mask length of
            zero corresponds to all sources within the group."
    ::= { ipMcastLocalListenerEntry 5 }

ipMcastLocalListenerRunIndex OBJECT-TYPE
    SYNTAX     Unsigned32 (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "A unique value corresponding to a piece of software running
            on this router or host system.  Where possible, this should
            be the system's native, unique identification number.

            This identifier is platform-specific.  It may correspond to
            a process ID or application instance number.

            A value of zero indicates that the application instance(s)
            cannot be identified.  A value of zero indicates that one or
            more unidentified applications have joined the specified
            multicast groups (for the specified sources) as listeners."
    REFERENCE "RFC 2287 sysApplRunIndex"
    ::= { ipMcastLocalListenerEntry 6 }

--
--  The Multicast Zone Table
--

ipMcastZoneTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMcastZoneEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing scope zones on this device."
    REFERENCE "RFC 4007 section 5"
    ::= { ipMcast 10 }

ipMcastZoneEntry OBJECT-TYPE
    SYNTAX     IpMcastZoneEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) describing a scope zone on this
            device."



McWalter, et al.        Expires January 18, 2007               [Page 37]

Internet-Draft                IP MCAST MIB                     July 2006


    REFERENCE "RFC 4007 section 5"
    INDEX      { ipMcastZoneIndex }
    ::= { ipMcastZoneTable 1 }

IpMcastZoneEntry ::= SEQUENCE {
    ipMcastZoneIndex                        InetZoneIndex,
    ipMcastZoneScopeDefaultZoneIndex        InetZoneIndex,
    ipMcastZoneScopeAddressType             InetAddressType,
    ipMcastZoneScopeAddress                 InetAddress,
    ipMcastZoneScopeAddressPrefixLength     InetAddressPrefixLength
}

ipMcastZoneIndex OBJECT-TYPE
    SYNTAX     InetZoneIndex (1..4294967295)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "This zone index uniquely identifies a zone on a device.

            Each zone is for a given scope.  Scope-level information in
            this table is for the unique scope that corresponds to this
            zone.

            Zero is a special value used to request the default zone for
            a given scope.  Zero is not a valid value for this object."
    ::= { ipMcastZoneEntry 1 }

ipMcastZoneScopeDefaultZoneIndex OBJECT-TYPE
    SYNTAX     InetZoneIndex (1..4294967295)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The default zone index for this scope.  This is the zone
            that this device will use if the default (zero) zone is
            requested for this scope.

            Zero is not a valid value for this object."
    ::= { ipMcastZoneEntry 2 }

ipMcastZoneScopeAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The IP address type for which this scope zone exists."
    ::= { ipMcastZoneEntry 3 }

ipMcastZoneScopeAddress OBJECT-TYPE



McWalter, et al.        Expires January 18, 2007               [Page 38]

Internet-Draft                IP MCAST MIB                     July 2006


    SYNTAX     InetAddress (SIZE (4|16))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The multicast group address which, when combined with
            ipMcastZoneScopeAddressPrefixLength, gives the multicast
            address range for this scope.  The InetAddressType is given
            given by ipMcastZoneScopeAddressType.

            Scoped IPv4 multicast address ranges are prefixed by
            prefixed by 239.0.0.0/4.  Scoped IPv6 multicast address
            ranges are FF0x::/16, where x is a valid RFC 4291 multicast
            scope.

            An IPv6 address prefixed by FF1x::/16 is a non-permanently-
            assigned address.  An IPv6 address prefixed by FF3x::/16 is
            a unicast-prefix based multicast addresses.  A scope
            FF0x::/16 implies an identical scope for these other
            prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
            in this table.

            This address object is only significant up to
            ipMcastSsmRangePrefixLength bits.  The remainder of the
            address bits are zero."
    REFERENCE "RFC 2365, RFC 3306 section 4, RFC 4291 section 2.7"
    ::= { ipMcastZoneEntry 4 }

ipMcastZoneScopeAddressPrefixLength OBJECT-TYPE
    SYNTAX     InetAddressPrefixLength (4..32)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The length in bits of the mask which, when combined
            with ipMcastZoneScopeAddress, gives the multicast address
            prefix for this scope.

            The InetAddressType is given by ipMcastZoneAddressType.
            For 'ipv4' this object must be in the range 4..32.  For
            'ipv6', this object must be 32."
    ::= { ipMcastZoneEntry 5 }

--
-- Conformance information
--

ipMcastMIBConformance
                  OBJECT IDENTIFIER ::= { ipMcastMIB 2 }
ipMcastMIBCompliances



McWalter, et al.        Expires January 18, 2007               [Page 39]

Internet-Draft                IP MCAST MIB                     July 2006


                  OBJECT IDENTIFIER ::= { ipMcastMIBConformance 1 }
ipMcastMIBGroups  OBJECT IDENTIFIER ::= { ipMcastMIBConformance 2 }

--
-- Compliance statements
--

ipMcastMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "Implementations of all the mandatory MIB groups listed
            below can claim full compliance.

            This MIB contains several InetAddressType and InetAddress
            objects, but not all IP address types are supported by all
            protocol implementations.

            A MIB implementation can claim full compliance if all IP
            address types supported by the protocol implementation are
            supported by the MIB implementation."

    MODULE  -- this module
    MANDATORY-GROUPS { ipMcastMIBBasicGroup }

        OBJECT      ipMcastEnable
        MIN-ACCESS  read-only
        DESCRIPTION
           "Write access is not required."

      GROUP   ipMcastMIBRouteGroup
      DESCRIPTION
          "This group is mandatory if the system is a router."

        OBJECT      ipMcastInterfaceTtl
        MIN-ACCESS  read-only
        DESCRIPTION
           "Write access is not required."

        OBJECT      ipMcastInterfaceRateLimit
        MIN-ACCESS  read-only
        DESCRIPTION
           "Write access is not required."

      GROUP   ipMcastMIBHopCountGroup
      DESCRIPTION
          "This group is optional."

      GROUP   ipMcastMIBPktsOutGroup



McWalter, et al.        Expires January 18, 2007               [Page 40]

Internet-Draft                IP MCAST MIB                     July 2006


      DESCRIPTION
          "This group is optional."

      GROUP   ipMcastMIBHCInterfaceGroup
      DESCRIPTION
          "This group is mandatory only for those network interfaces
          for which the value of the corresponding instance of ifSpeed
          is greater than 20,000,000 bits/second."

      GROUP   ipMcastMIBRouteProtoGroup
      DESCRIPTION
          "This group is mandatory if the system is a router."

      GROUP   ipMcastMIBSsmGroup
      DESCRIPTION
          "This group is optional."

      GROUP   ipMcastMIBLocalListenerGroup
      DESCRIPTION
          "This group is optional."

      GROUP   ipMcastMIBBoundaryIfGroup
      DESCRIPTION
          "This group is mandatory if the system is a router that
          supports administratively-scoped multicast address
          boundaries."

        OBJECT      ipMcastBoundaryStatus
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

      GROUP   ipMcastMIBScopeNameGroup
      DESCRIPTION
          "This group is mandatory if the system is a router that
          supports multicast scope names."

        OBJECT      ipMcastScopeNameString
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

        OBJECT      ipMcastScopeNameDefault
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

        OBJECT      ipMcastScopeNameStatus



McWalter, et al.        Expires January 18, 2007               [Page 41]

Internet-Draft                IP MCAST MIB                     July 2006


        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

      GROUP   ipMcastMIBIfPktsGroup
      DESCRIPTION
          "This group is optional."

      GROUP   ipMcastMIBRouteOctetsGroup
      DESCRIPTION
          "This group is optional."

    ::= { ipMcastMIBCompliances 1 }

ipMcastMIBMRouteCompliance MODULE-COMPLIANCE
    STATUS  deprecated
    DESCRIPTION
            "Implementations of this compliance statement are equivalent
            to compliance with the deprecated IPMROUTE-MIB module."

    MODULE  -- this module
    MANDATORY-GROUPS { ipMcastMIBMRouteBasicGroup }

    ::= { ipMcastMIBCompliances 2 }
--
-- Units of conformance
--
ipMcastMIBMRouteBasicGroup OBJECT-GROUP
    OBJECTS { ipMcastEnable, ipMcastRouteEntryCount,
              ipMcastRouteUpstreamNeighborType,
              ipMcastRouteUpstreamNeighbor, ipMcastRouteInIfIndex,
              ipMcastRouteTimeStamp, ipMcastRouteExpiryTime,
              ipMcastRouteNextHopState,
              ipMcastRouteNextHopTimeStamp,
              ipMcastRouteNextHopExpiryTime,
              ipMcastRouteNextHopProtocol,
              ipMcastRouteNextHopPkts,
              ipMcastInterfaceTtl,
              ipMcastInterfaceProtocol,
              ipMcastInterfaceRateLimit,
              ipMcastInterfaceInMcastOctets,
              ipMcastInterfaceOutMcastOctets
            }
    STATUS  deprecated
    DESCRIPTION
            "A collection of objects to support basic management of IP
            Multicast routing.




McWalter, et al.        Expires January 18, 2007               [Page 42]

Internet-Draft                IP MCAST MIB                     July 2006


            This conformance group is deprecated.  It is replaced by
            ipMcastMIBBasicGroup and ipMcastMIBRouteGroup"
    ::= { ipMcastMIBGroups 1 }

ipMcastMIBHopCountGroup OBJECT-GROUP
    OBJECTS { ipMcastRouteNextHopClosestMemberHops }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of the use of
            hop counts in IP Multicast routing."
    ::= { ipMcastMIBGroups 2 }

ipMcastMIBPktsOutGroup OBJECT-GROUP
    OBJECTS { ipMcastRouteNextHopPkts }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of packet
            counters for each outgoing interface entry of a route."
    ::= { ipMcastMIBGroups 3 }

ipMcastMIBHCInterfaceGroup OBJECT-GROUP
    OBJECTS { ipMcastInterfaceHCInMcastOctets,
              ipMcastInterfaceHCOutMcastOctets,
              ipMcastInterfaceHCInMcastPkts,
              ipMcastInterfaceHCOutMcastPkts,
              ipMcastRouteHCOctets,
              ipMcastBoundaryHCDroppedMcastOctets,
              ipMcastBoundaryHCDroppedMcastPkts }
    STATUS  current
    DESCRIPTION
            "A collection of objects providing information specific to
            high speed (greater than 20,000,000 bits/second) network
            interfaces."
    ::= { ipMcastMIBGroups 4 }

ipMcastMIBRouteProtoGroup OBJECT-GROUP
    OBJECTS { ipMcastRouteProtocol, ipMcastRouteRtProtocol,
              ipMcastRouteRtAddressType, ipMcastRouteRtAddress,
              ipMcastRouteRtPrefixLength, ipMcastRouteRtType }
    STATUS  current
    DESCRIPTION
            "A collection of objects providing information on the
            relationship between multicast routing information and the
            IP Forwarding Table."
    ::= { ipMcastMIBGroups 5 }

ipMcastMIBBasicGroup OBJECT-GROUP
    OBJECTS { ipMcastEnable, ipMcastRouteEntryCount



McWalter, et al.        Expires January 18, 2007               [Page 43]

Internet-Draft                IP MCAST MIB                     July 2006


            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support basic management of IP
            Multicast protocols."
    ::= { ipMcastMIBGroups 6 }

ipMcastMIBRouteGroup OBJECT-GROUP
    OBJECTS { ipMcastRouteUpstreamNeighborType,
              ipMcastRouteUpstreamNeighbor, ipMcastRouteInIfIndex,
              ipMcastRouteTimeStamp, ipMcastRouteExpiryTime,
              ipMcastRoutePkts,
              ipMcastRouteDifferentInIfPackets,
              ipMcastRouteOctets,
              ipMcastRouteNextHopState, ipMcastRouteNextHopTimeStamp,
              ipMcastRouteNextHopExpiryTime,
              ipMcastRouteNextHopProtocol,
              ipMcastRouteNextHopPkts,
              ipMcastInterfaceTtl,
              ipMcastInterfaceRateLimit,
              ipMcastInterfaceInMcastOctets,
              ipMcastInterfaceOutMcastOctets,
              ipMcastRouteTtlDropPackets,
              ipMcastRouteTtlDropOctets
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support basic management of IP
            Multicast routing."
    ::= { ipMcastMIBGroups 7 }

ipMcastMIBSsmGroup OBJECT-GROUP
    OBJECTS { ipMcastSsmRangeRowStatus, ipMcastSsmRangeStorageType }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of the use of
            Source-Specific Multicast routing."
    ::= { ipMcastMIBGroups 8 }

ipMcastMIBLocalListenerGroup OBJECT-GROUP
    OBJECTS { ipMcastLocalListenerRunIndex }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of local
            listeners on hosts or routers."
    ::= { ipMcastMIBGroups 9 }

ipMcastMIBBoundaryIfGroup OBJECT-GROUP



McWalter, et al.        Expires January 18, 2007               [Page 44]

Internet-Draft                IP MCAST MIB                     July 2006


    OBJECTS { ipMcastBoundaryStatus,
              ipMcastBoundaryStorageType,
              ipMcastBoundaryDroppedMcastOctets,
              ipMcastBoundaryDroppedMcastPkts,
              ipMcastZoneScopeDefaultZoneIndex,
              ipMcastZoneScopeAddressType,
              ipMcastZoneScopeAddress,
              ipMcastZoneScopeAddressPrefixLength
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of scoped
            multicast address boundaries."
    ::= { ipMcastMIBGroups 10 }

ipMcastMIBScopeNameGroup OBJECT-GROUP
    OBJECTS { ipMcastScopeNameString, ipMcastScopeNameDefault,
              ipMcastScopeNameStatus, ipMcastScopeNameStorageType }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of multicast
            address scope names."
    ::= { ipMcastMIBGroups 11 }

ipMcastMIBIfPktsGroup OBJECT-GROUP
    OBJECTS { ipMcastInterfaceInMcastPkts,
              ipMcastInterfaceOutMcastPkts }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of packet
            counters for each interface entry."
    ::= { ipMcastMIBGroups 12 }

ipMcastMIBRouteOctetsGroup OBJECT-GROUP
    OBJECTS { ipMcastRouteOctets, ipMcastRouteNextHopOctets,
              ipMcastRouteDifferentInIfOctets }
    STATUS  current
    DESCRIPTION
            "A collection of objects to support management of octet
            counters for each forwarding entry."
    ::= { ipMcastMIBGroups 13 }

END


6.  Security Considerations





McWalter, et al.        Expires January 18, 2007               [Page 45]

Internet-Draft                IP MCAST MIB                     July 2006


6.1  SNMPv2

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secured (for example by using IPSec),
   there is still no control over whom on the secure network is allowed
   to access (read/change/create/delete) the objects in this MIB module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see [RFC3410], section 8),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module is properly configured to give access to
   the objects only to those principals (users) that have legitimate
   rights to access (read/change/create/delete) them.

6.2  Writeable objects

   There are a number of management objects defined in this MIB module
   with a MAX-ACCESS clause of read-write and/or read-create.  This
   section discusses and lists these elements.

   Such objects may be considered sensitive or vulnerable in some
   network environments.  The support for SET operations in a non-secure
   environment without proper protection can have a negative effect on
   network operations.

   In this MIB module, possible effects that can be induced by SET
   operations on writeable objects include:

   o  Modifications multicast routing behavior that prevent or disrupt
      services provided by the network, including (but not limited to)
      multicast data traffic delivery.

   o  Modifications multicast routing behavior that allow interception
      or subversion of information that is carried by the network.  For
      example, attacks can be envisaged that would pass nominated
      multicast data streams through a nominated location, without the
      sources or listeners becoming aware of this subversion.

   The following are the read-write and read-create objects defined in
   this MIB module.

   ipMcastEnable



McWalter, et al.        Expires January 18, 2007               [Page 46]

Internet-Draft                IP MCAST MIB                     July 2006


   ipMcastInterfaceTable
   ipMcastInterfaceEntry
   ipMcastInterfaceIfIndex
   ipMcastInterfaceTtl
   ipMcastInterfaceProtocol
   ipMcastInterfaceRateLimit
   ipMcastSsmRangeTable
   ipMcastSsmRangeEntry
   ipMcastSsmRangeAddressType
   ipMcastSsmRangeAddress
   ipMcastSsmRangePrefixLength
   ipMcastSsmRangeRowStatus
   ipMcastSsmRangeStorageType
   ipMcastBoundaryTable
   ipMcastBoundaryEntry
   ipMcastBoundaryIfIndex
   ipMcastBoundaryAddressType
   ipMcastBoundaryAddress
   ipMcastBoundaryAddressPrefixLength
   ipMcastBoundaryStatus
   ipMcastBoundaryStorageType
   ipMcastScopeNameTable
   ipMcastScopeNameEntry
   ipMcastScopeNameAddressType
   ipMcastScopeNameAddress
   ipMcastScopeNameAddressPrefixLength
   ipMcastScopeNameLanguage
   ipMcastScopeNameString
   ipMcastScopeNameDefault
   ipMcastScopeNameStatus
   ipMcastScopeNameStorageType

6.3  Readable objects

   As well as the writeable objects discussed above, there are a number
   of readable objects (i.e., objects with a MAX-ACCESS other than not-
   accessible) that may be considered sensitive or vulnerable in some
   network environments.  It is thus important to control even GET
   and/or NOTIFY access to these objects and possibly to even encrypt
   the values of these objects when sending them over the network via
   SNMP.

   In this MIB module, possible effects that can be induced by GET
   and/or NOTIFY operations include:

   o  Determination of the topology, disposition, and composition of the
      network.  This information may be commercially sensitive, and may
      also be used in preparation for attacks, including any of the



McWalter, et al.        Expires January 18, 2007               [Page 47]

Internet-Draft                IP MCAST MIB                     July 2006


      attacks described above.

   o  Determinion of whether multicast data is flowing in the network,
      or has flowed recently, as well as the locations of senders and
      recipients.  An attacker can apply 'traffic analysis' to this
      data.  In some cases, the information revealed by traffic analyses
      can be as damaging as full knowledge of the data being
      transported.


7.  IANA Considerations

   IP-MCAST-MIB should be rooted under the mib-2 subtree.  IANA is
   requested to assign { mib-2 XXX } to the IP-MCAST-MIB module
   specified in this document.

8.  Acknowledgements

   This MIB module is based on the original work in [RFC2932] by K.
   McCloghrie, D. Farinacci and D. Thaler.

   Suggested IPv6 multicast MIBs by R. Sivaramu and R. Raghunarayan have
   been used for comparison while editing this MIB module.

   The authors are also grateful to Bill Fenner for fine ideas, and to
   Bharat Joshi for input and several corrections.

9.  References

9.1  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2365]  Meyer, D., "Administratively Scoped IP Multicast", BCP 23,
              RFC 2365, July 1998.

   [RFC2434]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 2434,
              October 1998.

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2",
              STD 58, RFC 2579, April 1999.



McWalter, et al.        Expires January 18, 2007               [Page 48]

Internet-Draft                IP MCAST MIB                     July 2006


   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, June 2000.

   [RFC3283]  Mahoney, B., Babics, G., and A. Taler, "Guide to Internet
              Calendaring", RFC 3283, June 2002.

   [RFC3306]  Haberman, B. and D. Thaler, "Unicast-Prefix-based IPv6
              Multicast Addresses", RFC 3306, August 2002.

   [RFC4001]  Daniele, M., Haberman, B., Routhier, S., and J.
              Schoenwaelder, "Textual Conventions for Internet Network
              Addresses", RFC 4001, February 2005.

   [RFC4007]  Deering, S., Haberman, B., Jinmei, T., Nordmark, E., and
              B. Zill, "IPv6 Scoped Address Architecture", RFC 4007,
              March 2005.

   [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
              Architecture", RFC 4291, February 2006.

9.2  Informative References

   [RFC1075]  Waitzman, D., Partridge, C., and S. Deering, "Distance
              Vector Multicast Routing Protocol", RFC 1075,
              November 1988.

   [RFC1584]  Moy, J., "Multicast Extensions to OSPF", RFC 1584,
              March 1994.

   [RFC2189]  Ballardie, T., "Core Based Trees (CBT version 2) Multicast
              Routing -- Protocol Specification --", RFC 2189,
              September 1997.

   [RFC2287]  Krupczak, C. and J. Saperia, "Definitions of System-Level
              Managed Objects for Applications", RFC 2287,
              February 1998.

   [RFC2932]  McCloghrie, K., Farinacci, D., and D. Thaler, "IPv4
              Multicast Routing MIB", RFC 2932, October 2000.

   [RFC2934]  McCloghrie, K., Farinacci, D., Thaler, D., and B. Fenner,
              "Protocol Independent Multicast MIB for IPv4", RFC 2934,
              October 2000.




McWalter, et al.        Expires January 18, 2007               [Page 49]

Internet-Draft                IP MCAST MIB                     July 2006


   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002.

   [RFC3569]  Bhattacharyya, S., "An Overview of Source-Specific
              Multicast (SSM)", RFC 3569, July 2003.

   [I-D.ietf-pim-sm-v2-new]
              Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas,
              "Protocol Independent Multicast - Sparse Mode PIM-SM):
              Protocol Specification  (Revised)",
              draft-ietf-pim-sm-v2-new-12 (work in progress),
              March 2006.

   [I-D.ietf-pim-bidir]
              Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
              "Bi-directional Protocol Independent Multicast (BIDIR-
              PIM)", draft-ietf-pim-bidir-08 (work in progress),
              October 2005.


Authors' Addresses

   David McWalter
   Data Connection Ltd
   100 Church Street
   Enfield  EN2 6BQ
   UK

   Email: dmcw@dataconnection.com


   Dave Thaler
   Microsoft Corporation
   One Microsoft Way
   Redmond  WA 98052-6399
   USA

   Email: dthaler@windows.microsoft.com












McWalter, et al.        Expires January 18, 2007               [Page 50]

Internet-Draft                IP MCAST MIB                     July 2006


   Andrew Kessler
   Cisco Systems
   425 E. Tasman Drive
   San Jose  CA 95134
   USA

   Email: kessler@cisco.com












































McWalter, et al.        Expires January 18, 2007               [Page 51]

Internet-Draft                IP MCAST MIB                     July 2006


Intellectual Property Statement

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.


Disclaimer of Validity

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Copyright Statement

   Copyright (C) The Internet Society (2006).  This document is subject
   to the rights, licenses and restrictions contained in BCP 78, and
   except as set forth therein, the authors retain all their rights.


Acknowledgment

   Funding for the RFC Editor function is currently provided by the
   Internet Society.




McWalter, et al.        Expires January 18, 2007               [Page 52]


Html markup produced by rfcmarkup 1.109, available from https://tools.ietf.org/tools/rfcmarkup/