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Versions: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 RFC 5519

                                                        J. Chesterfield,
                                                                 Editor
                                                        U. of Cambridge
Internet Draft                                             Computer Lab
Document:
draft-ietf-magma-mgmd-mib-06.txt
Expires: February 2006                                      August 2005

                 Multicast Group Membership Discovery MIB


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
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   This Internet-Draft will expire on February 21, 2006.


Copyright Notice

   Copyright (C) The Internet Society (2005).


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 the Internet
   Group Management Protocol (IGMP) and the Multicast Listener
   Discovery (MLD) protocol.

Table of Contents
   1. Introduction....................................................2
   2. The Internet-Standard Management Framework......................2
   3. Overview........................................................2


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   4. Definitions.....................................................3
   5. Security Considerations........................................28
   6. IANA Considerations............................................28
   6. Contributors...................................................29
   7. Acknowledgements...............................................30
   8. Author's Address...............................................30
   9. References.....................................................30
   10. Full Copyright Statement......................................31

1. Introduction
   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes objects used for managing the Internet
   Group Management Protocol (IGMP), version 1 [5], version 2 [6] or
   version 3 [7] and the Multicast Listener Discovery (MLD) protocol
   version 1 [8] or version 2 [9]. Both protocols provide multicast
   membership discovery capability, IGMP pertains to IP version 4
   clients, and MLD for IP version 6 clients. This version of the MIB
   supercedes both rfc2933 [10] and rfc3019 [11], incorporating a
   generic interface for both IGMP and MLD implementations, and changes
   to enable "source filtering" in multicast clients. The MIB
   encompasses both router and host nodes with relevant management
   objects defined for each.


2. The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [4].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [1], STD 58, RFC 2579 [2] and STD 58, RFC 2580
   [3].


3. Overview

   This MIB module contains eight tables:

     1. the MGMD Host Interface Table which contains one row for each
        interface on which MGMD is enabled on a host,

     2. the MGMD Router Interface Table which contains one row for each
        interface on which MGMD is enabled on a router,

     3. the MGMD Host Cache Table which contains one row for each IP
        multicast group for which there are members on a particular


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        interface on a host,

     4. the MGMD Router Cache Table which contains one row for each IP
        multicast group for which there are members on a particular
        interface on a router,

     5. the reverse MGMD Host Table which contains one row for each
        interface for which there are active multicast groups on a host,

     6. the reverse MGMD Router Table which contains one row for each
        interface for which there are active multicast groups on a
        router,

     7. the MGMD HostSrcList Table which contains one row for each
        entry in the source filter record for an interface and
        multicast group pair on a host.

     8. the MGMD RouterSrcList Table which contains one row for each
        entry in the source filter record for an interface and
        multicast group pair on a router.

   All tables are intended for EITHER router OR host functionality as
   indicated by the name and corresponding description, although it is
   anticipated that there would be scenarios where both terms might
   apply to a device, e.g. a router which joins a multicast group also
   as a host for measurement purposes. The source list tables provide
   an extension to the cache tables to indicate the source specific
   includes or excludes associated with each IP Multicast group on
   each specific interface. This functionality is only supported in
   IGMPv3 and MLDv2 capable nodes.

4. Definitions

MGMD-STD-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, mib-2, Counter32, Gauge32,
    Unsigned32, TimeTicks            FROM SNMPv2-SMI
    InetAddress, InetAddressType     FROM INET-ADDRESS-MIB
    RowStatus                        FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP  FROM SNMPv2-CONF
    InterfaceIndexOrZero,
    InterfaceIndex                   FROM IF-MIB;

mgmdStdMIB MODULE-IDENTITY
    LAST-UPDATED "200508210000Z" -- Aug 21, 2005
    ORGANIZATION "IETF MAGMA Working Group."
    CONTACT-INFO
            " Julian Chesterfield
              University of Cambridge,
              Computer Laboratory,
              15 JJ Thompson Avenue,
              Cambridge,


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              CB3 0FD
              UK

              EMail: magma@ietf.org"
    REVISION     "200508210000Z" -- Aug 21, 2005

    DESCRIPTION
            "The MIB module for MGMD Management.
            A New version of MGMD combining RFC 2933 and RFC 3019.
            Includes IGMPv3 and MLDv2 source filtering changes.

            Copyright (C) The Internet Society (date).  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
            "
    ::= { mib-2 82 }


mgmdMIBObjects     OBJECT IDENTIFIER ::= { mgmdStdMIB 1 }

--
--  The MGMD Host Interface Table
--

mgmdHostInterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdHostInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the interfaces on which
             IGMP or MLD is enabled."
    ::= { mgmdMIBObjects 3 }

mgmdHostInterfaceEntry OBJECT-TYPE
    SYNTAX     MgmdHostInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) representing an interface on
            which IGMP or MLD is enabled."
    INDEX      { mgmdHostInterfaceIfIndex, mgmdHostInterfaceQuerierType}
    ::= { mgmdHostInterfaceTable 1 }

MgmdHostInterfaceEntry ::= SEQUENCE {
    mgmdHostInterfaceIfIndex               InterfaceIndex,
    mgmdHostInterfaceQuerierType           InetAddressType,
    mgmdHostInterfaceQuerier               InetAddress,
    mgmdHostInterfaceStatus                RowStatus,
    mgmdHostInterfaceVersion               Unsigned32,
    mgmdHostInterfaceVersion1QuerierTimer  TimeTicks,
    mgmdHostInterfaceVersion2QuerierTimer  TimeTicks,
    mgmdHostInterfaceVersion3Robustness    Unsigned32


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}


mgmdHostInterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The ifIndex value of the interface for which IGMP or MLD
            is enabled. The table is indexed by the ifIndex value and
            the InetAddressType to allow for interfaces which may be
            configured in both IPv4 and IPv6 modes."
    ::= { mgmdHostInterfaceEntry 1 }

mgmdHostInterfaceQuerierType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of this interface. This entry along with
             the ifIndex value acts as an index to the mgmdHostInterface
             table. A physical interface may be configured in multiple
             modes concurrently, e.g. in IPv4 and IPv6 modes connected
             to the same interface, however the traffic is considered to
             be logically separate."
    ::= { mgmdHostInterfaceEntry 2 }

mgmdHostInterfaceQuerier OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address of the IGMP or MLD Querier on the IP subnet to
            which this interface is attached. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the
            mgmdHostInterfaceQuerierType variable in the
            mgmdHostInterface table."
    ::= { mgmdHostInterfaceEntry 3 }

mgmdHostInterfaceStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The activation of a row enables the host side of IGMP or
            MLD on the interface.  The destruction of a row disables the
            host side of IGMP or MLD  on the interface."
    ::= { mgmdHostInterfaceEntry 4 }

mgmdHostInterfaceVersion OBJECT-TYPE
    SYNTAX     Unsigned32 (1..3)
    MAX-ACCESS read-create
    STATUS     current


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    DESCRIPTION
            "The maximum version of MGMD which the host can run on this
            interface. A value of 1 is only applicable for IPv4, and
            indicates that the host only supports IGMPv1 on the
            interface. A value of 2 indicates that the host also
            supports IGMPv2 (for IPv4) or MLDv1 (for IPv6). A value of 3
            indicates that the host also supports IGMPv3 (for IPv4) or
            MLDv2 (for IPv6)."
    DEFVAL     { 3 }
    ::= { mgmdHostInterfaceEntry 5 }

mgmdHostInterfaceVersion1QuerierTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the host assumes that there are
            no MGMDv1 routers present on the interface.  While this is
            non-zero, the host will reply to all queries with version 1
            membership reports. This variable applies to MGMDv2 or 3
            hosts that are forced to run in v1 for compatibility with v1
            hosts or routers present on the interface. This object may
            only be present  when the corresponding value of
            mgmdHostCacheAddressType is IPv4."
    DEFVAL     { 0 }
    ::= { mgmdHostInterfaceEntry 6 }

mgmdHostInterfaceVersion2QuerierTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the host assumes that there are
            no MGMDv2 routers present on the interface.  While this is
            non-zero, the host will reply to all queries with version 1
            or 2 membership reports. This variable applies to MGMDv3
            hosts that are forced to run in v2 for compatibility with v2
            hosts or routers present on the interface."
    DEFVAL     { 0 }
    ::= { mgmdHostInterfaceEntry 7 }

mgmdHostInterfaceVersion3Robustness OBJECT-TYPE
    SYNTAX     Unsigned32
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The robustness variable utilised by an MGMDv3 host in
            sending state-change reports for multicast routers. To
            ensure the state-change report is not missed, the host
            retransmits the state-change report
            [mgmdHostInterfaceVersion3Robustness - 1] times. The
            variable must be a non-zero value."
    DEFVAL     { 2 }


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    ::= { mgmdHostInterfaceEntry 8 }


--
--  The MGMD Router Interface Table
--

mgmdRouterInterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdRouterInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the interfaces on which
             IGMP or MLD is enabled."
    ::= { mgmdMIBObjects 4 }

mgmdRouterInterfaceEntry OBJECT-TYPE
    SYNTAX     MgmdRouterInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) representing an interface on
            which IGMP or MLD is enabled."
    INDEX      { mgmdRouterInterfaceIfIndex,
                 mgmdRouterInterfaceQuerierType }
    ::= { mgmdRouterInterfaceTable 1 }

MgmdRouterInterfaceEntry ::= SEQUENCE {
    mgmdRouterInterfaceIfIndex               InterfaceIndex,
    mgmdRouterInterfaceQuerierType           InetAddressType,
    mgmdRouterInterfaceQuerier               InetAddress,
    mgmdRouterInterfaceQueryInterval         Unsigned32,
    mgmdRouterInterfaceStatus                RowStatus,
    mgmdRouterInterfaceVersion               Unsigned32,
    mgmdRouterInterfaceQueryMaxResponseTime  Unsigned32,
    mgmdRouterInterfaceQuerierUpTime         TimeTicks,
    mgmdRouterInterfaceQuerierExpiryTime     TimeTicks,
    mgmdRouterInterfaceWrongVersionQueries   Counter32,
    mgmdRouterInterfaceJoins                 Counter32,
    mgmdRouterInterfaceProxyIfIndex          InterfaceIndexOrZero,
    mgmdRouterInterfaceGroups                Gauge32,
    mgmdRouterInterfaceRobustness            Unsigned32,
    mgmdRouterInterfaceLastMembQueryIntvl    Unsigned32,
    mgmdRouterInterfaceLastMembQueryCount    Unsigned32,
    mgmdRouterInterfaceStartupQueryCount     Unsigned32,
    mgmdRouterInterfaceStartupQueryInterval  Unsigned32
}


mgmdRouterInterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current


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    DESCRIPTION
            "The ifIndex value of the interface for which IGMP or MLD
            is enabled. The table is indexed by the ifIndex value and
            the InetAddressType to allow for interfaces which may be
            configured in both IPv4 and IPv6 modes."
    ::= { mgmdRouterInterfaceEntry 1 }


mgmdRouterInterfaceQuerierType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of this interface. This entry along with
             the ifIndex value acts as the index to the
             mgmdRouterInterface table. A physical interface may be
             configured in multiple modes concurrently, e.g. in IPv4
             and IPv6 modes connected to the same interface, however
             the traffic is considered to be logically separate."
    ::= { mgmdRouterInterfaceEntry 2 }

mgmdRouterInterfaceQuerier OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address of the IGMP or MLD Querier on the IP subnet to
            which this interface is attached. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the
            mgmdRouterInterfaceQuerierType variable in the
            mgmdRouterInterface table."
    ::= { mgmdRouterInterfaceEntry 3 }

mgmdRouterInterfaceQueryInterval OBJECT-TYPE
    SYNTAX     Unsigned32 (0..31744)
    UNITS      "seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The frequency at which IGMP or MLD Host-Query packets are
            transmitted on this interface. This variable must be a
            non-zero value."
    DEFVAL     { 125 }
    ::= { mgmdRouterInterfaceEntry 4 }

mgmdRouterInterfaceStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The activation of a row enables the router side of IGMP or
            MLD on the interface.  The destruction of a row disables the
            router side of IGMP or MLD on the interface."


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    ::= { mgmdRouterInterfaceEntry 5 }

mgmdRouterInterfaceVersion OBJECT-TYPE
    SYNTAX     Unsigned32 (1..3)
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The version of MGMD which is running on this interface.
            Value 1 applies to IGMPv1 routers only. Value 2 applies
            To IGMPv2 and MLDv1 routers, and value 3 applies to IGMPv3
            and MLDv2 routers.
            This object can be used to configure a router capable of
            running either version.  For IGMP and MLD to function
            correctly, all routers on a LAN must be configured to run
            the same version on that LAN."
    DEFVAL     { 3 }
    ::= { mgmdRouterInterfaceEntry 6 }

mgmdRouterInterfaceQueryMaxResponseTime OBJECT-TYPE
    SYNTAX     Unsigned32  (0..31744)
    UNITS      "tenths of seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The maximum query response time advertised in MGMDv2 or v3
            queries on this interface."
    DEFVAL     { 100 }
    ::= { mgmdRouterInterfaceEntry 7 }

mgmdRouterInterfaceQuerierUpTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time since mgmdRouterInterfaceQuerier was last
            changed."
    ::= { mgmdRouterInterfaceEntry 8 }



mgmdRouterInterfaceQuerierExpiryTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The amount of time remaining before the Other Querier
            Present Timer expires.  If the local system is the querier,
            the value of this object is zero."
    ::= { mgmdRouterInterfaceEntry 9 }

mgmdRouterInterfaceWrongVersionQueries OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only


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    STATUS     current
    DESCRIPTION
             "The number of general queries received whose IGMP or MLD
            version does not match the equivalent
            mgmdRouterInterfaceVersion, over the lifetime of the row
            entry.  Both IGMP and MLD require that all
            routers on a LAN be configured to run the same version.
            Thus, if any general queries are received with the wrong
            version, this indicates a configuration error."
    ::= { mgmdRouterInterfaceEntry 10 }

mgmdRouterInterfaceJoins OBJECT-TYPE
    SYNTAX     Counter32

    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of times a group membership has been added on
            this interface; that is, the number of times an entry for
            this interface has been added to the Cache Table.  This
            object gives an indication of the amount of IGMP or MLD
            activity over the lifetime of the row entry."
    ::= { mgmdRouterInterfaceEntry 11 }

mgmdRouterInterfaceProxyIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndexOrZero
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "Some devices implement a form of IGMP or MLD proxying
            whereby memberships learned on the interface represented by
            this row, cause Host Membership Reports to be sent on the
            interface whose ifIndex value is given by this object.
            Such a device would implement the mgmdV2RouterBaseMIBGroup
            only on its router interfaces (those interfaces with
            non-zero mgmdRouterInterfaceProxyIfIndex).  Typically, the
            value of this object is 0, indicating that no proxying is
            being done."
    DEFVAL     { 0 }
    ::= { mgmdRouterInterfaceEntry 12 }

mgmdRouterInterfaceGroups OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The current number of entries for this interface in the
            RouterCache Table."
    ::= { mgmdRouterInterfaceEntry 13 }

mgmdRouterInterfaceRobustness OBJECT-TYPE
    SYNTAX     Unsigned32 (1..255)
    MAX-ACCESS read-create


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    STATUS     current
    DESCRIPTION
            "The Robustness Variable allows tuning for the expected
            packet loss on a subnet.  If a subnet is expected to be
            lossy, the Robustness Variable may be increased.  IGMP and
            MLD is robust to (Robustness Variable-1) packet losses."
    DEFVAL     { 2 }
    ::= { mgmdRouterInterfaceEntry 14 }

mgmdRouterInterfaceLastMembQueryIntvl OBJECT-TYPE
    SYNTAX     Unsigned32  (0..31744)
    UNITS      "tenths of seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The Last Member Query Interval is the Max Response Time
            inserted into Group-Specific Queries sent in response to
            Leave Group messages, and is also the amount of time
            Between Group-Specific Query messages.  This value may be
            tuned to modify the leave latency of the network.  A
            reduced value results in reduced time to detect the loss of
            the last member of a group.  The value of this object is
            irrelevant if mgmdRouterInterfaceVersion is 1."
    DEFVAL     { 10 }
    ::= { mgmdRouterInterfaceEntry 15 }

mgmdRouterInterfaceLastMembQueryCount OBJECT-TYPE
    SYNTAX     Unsigned32 (1..255)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "Represents the number of Group-specific and
            Group-and-Source-specific queries sent by the router before
            it assumes there are no local members."
    DEFVAL     { 2 }
    ::= { mgmdRouterInterfaceEntry 16 }

mgmdRouterInterfaceStartupQueryInterval OBJECT-TYPE
    SYNTAX     Unsigned32 (0..31744)
    UNITS      "seconds"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "This variable represents the interval between General
            Queries sent by a Querier on startup."
    DEFVAL     { 125 }
    ::= { mgmdRouterInterfaceEntry 17 }

mgmdRouterInterfaceStartupQueryCount OBJECT-TYPE
    SYNTAX     Unsigned32 (1..255)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION


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            "Represents the number of Queries sent out on startup
            separated by the Startup Query Interval."
    DEFVAL     { 2 }
    ::= { mgmdRouterInterfaceEntry 18 }


--
--  The MGMD Host Cache Table
--

mgmdHostCacheTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdHostCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the IP multicast groups for
             which the host is a member on a particular interface."


    ::= { mgmdMIBObjects 5 }

mgmdHostCacheEntry OBJECT-TYPE
    SYNTAX     MgmdHostCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the mgmdHostCacheTable."
    INDEX      { mgmdHostCacheAddressType, mgmdHostCacheAddress,
                 mgmdHostCacheIfIndex }
    ::= { mgmdHostCacheTable 1 }

MgmdHostCacheEntry ::= SEQUENCE {
    mgmdHostCacheAddressType        InetAddressType,
    mgmdHostCacheAddress            InetAddress ,
    mgmdHostCacheIfIndex            InterfaceIndex,
    mgmdHostCacheUpTime             TimeTicks,
    mgmdHostCacheLastReporter       InetAddress,
    mgmdHostCacheSourceFilterMode   INTEGER
}

mgmdHostCacheAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the mgmdHostCacheTable entry. This
            value applies to both the mgmdHostCacheAddress and the
            mgmdHostCacheLastReporter entries."
    ::= { mgmdHostCacheEntry 1 }


mgmdHostCacheAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))


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    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the mgmdHostCacheAddressType
            variable in the mgmdHostCache table."
    ::= { mgmdHostCacheEntry 2 }

mgmdHostCacheIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information
            for an IP multicast group address."
    ::= { mgmdHostCacheEntry 3 }



mgmdHostCacheUpTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time elapsed since this entry was created."
    ::= { mgmdHostCacheEntry 4 }

mgmdHostCacheLastReporter OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The IP address of the source of the last membership report
            received for this IP Multicast group address on this
            interface.  If no membership report has been received, this
            object has the value 0::0. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the mgmdHostCacheAddressType
            variable in the mgmdHostCache table."
    ::= { mgmdHostCacheEntry 5 }

mgmdHostCacheSourceFilterMode OBJECT-TYPE
    SYNTAX     INTEGER {include (1),
                        exclude (2) }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The state in which the interface is currently set. The
            value indicates the relevance of the corresponding source
            list entries in the HostSrcList Table for MGMDv3
            interfaces."
    ::= { mgmdHostCacheEntry 6 }



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--
--  The MGMD Router Cache Table
--

mgmdRouterCacheTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdRouterCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the IP multicast groups for
              which there are members on a particular router interface."
    ::= { mgmdMIBObjects 6 }

mgmdRouterCacheEntry OBJECT-TYPE
    SYNTAX     MgmdRouterCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the mgmdRouterCacheTable."

    INDEX      { mgmdRouterCacheAddressType, mgmdRouterCacheAddress,
                 mgmdRouterCacheIfIndex }
    ::= { mgmdRouterCacheTable 1 }


MgmdRouterCacheEntry ::= SEQUENCE {
    mgmdRouterCacheAddressType        InetAddressType,
    mgmdRouterCacheAddress            InetAddress,
    mgmdRouterCacheIfIndex            InterfaceIndex,
    mgmdRouterCacheLastReporter       InetAddress,
    mgmdRouterCacheUpTime             TimeTicks,
    mgmdRouterCacheExpiryTime         TimeTicks,
    mgmdRouterCacheExcludeModeExpiryTimer
                                      TimeTicks,
    mgmdRouterCacheVersion1HostTimer  TimeTicks,
    mgmdRouterCacheVersion2HostTimer  TimeTicks,
    mgmdRouterCacheSourceFilterMode   INTEGER
}

mgmdRouterCacheAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the mgmdRouterCacheTable entry. This
            value applies to both the mgmdRouterCacheAddress and the
            mgmdRouterCacheLastReporter entries."
        ::= { mgmdRouterCacheEntry 1 }

mgmdRouterCacheAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS not-accessible
    STATUS     current


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    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the
            mgmdRouterCacheAddressType variable in the mgmdRouterCache
            table."
    ::= { mgmdRouterCacheEntry 2 }

mgmdRouterCacheIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information
            for an IP multicast group address."
    ::= { mgmdRouterCacheEntry 3 }

mgmdRouterCacheLastReporter OBJECT-TYPE
    SYNTAX     InetAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The IP address of the source of the last membership report
            received for this IP Multicast group address on this
            interface.  If no membership report has been received, this
            object has the value 0::0. The InetAddressType, e.g.
            IPv4 or IPv6, is identified by the
            mgmdRouterCacheAddressType variable in the mgmdRouterCache
            table."
    ::= { mgmdRouterCacheEntry 4 }

mgmdRouterCacheUpTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time elapsed since this entry was created."
    ::= { mgmdRouterCacheEntry 5 }

mgmdRouterCacheExpiryTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "This value represents the time remaining
            before the Group Membership Interval state expires. The
            value must always be greater than 0."
    ::= { mgmdRouterCacheEntry 6 }

mgmdRouterCacheExcludeModeExpiryTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current


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    DESCRIPTION
            "This value is applicable only to MGMDv3 compatible
            nodes, and represents the time remaining before the
            interface EXCLUDE state expires and the interface state
            transitions to INCLUDE mode. This value can never be
            greater than mgmdRouterCacheExpiryTime."
    ::= { mgmdRouterCacheEntry 7 }

mgmdRouterCacheVersion1HostTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the local router will assume that
            there are no longer any MGMD version 1 members on the IP
            subnet attached to this interface.  This entry only applies
            to IGMPv1 hosts, and is not implemented for MLD. Upon
            hearing any MGMDv1 Membership Report (IGMPv1 only), this
            value is reset to the group membership timer.  While this
            time remaining is non-zero, the local router ignores any
            MGMDv2 Leave messages (IGMPv2 only) for this group that it
            receives on this interface."
    ::= { mgmdRouterCacheEntry 8 }

mgmdRouterCacheVersion2HostTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the local router will assume that
            there are no longer any MGMD version 2 members on the IP
            subnet attached to this interface.  This entry applies to
            both IGMP and MLD hosts. Upon hearing any MGMDv2
            Membership Report, this value is reset to the group
            membership timer.  Assuming no MGMDv1 hosts have been
            detected, the local router does not ignore any MGMDv2 Leave


            messages for this group that it receives on this
            interface."
    ::= { mgmdRouterCacheEntry 9 }

mgmdRouterCacheSourceFilterMode OBJECT-TYPE
    SYNTAX     INTEGER {include (1),
                        exclude (2) }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The current cache state, applicable to MGMDv3 compatible
            nodes. The value indicates whether the state is INCLUDE or
            EXCLUDE."
    ::= { mgmdRouterCacheEntry 10 }



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--
--  The MGMD Reverse Host interface/cache lookup Table
--

mgmdInverseHostCacheTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdInverseHostCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the interfaces which
             are members of a particular group. This is a reverse
             lookup table for entries in the mgmdHostCacheTable."
    ::= { mgmdMIBObjects 7 }

mgmdInverseHostCacheEntry OBJECT-TYPE
    SYNTAX     MgmdInverseHostCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the
            mgmdInverseHostCacheTable."
    INDEX      { mgmdInverseHostCacheIfIndex,
                 mgmdInverseHostCacheAddressType,
                 mgmdInverseHostCacheAddress}
    ::= { mgmdInverseHostCacheTable 1 }


MgmdInverseHostCacheEntry ::= SEQUENCE {
    mgmdInverseHostCacheIfIndex            InterfaceIndex,
    mgmdInverseHostCacheAddressType        InetAddressType,
    mgmdInverseHostCacheAddress            InetAddress
}

mgmdInverseHostCacheIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information."
    ::= { mgmdInverseHostCacheEntry 1 }


mgmdInverseHostCacheAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the mgmdInverseHostCacheTable entry."
    ::= { mgmdInverseHostCacheEntry 2 }

mgmdInverseHostCacheAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS read-only


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    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information about an interface. The
            InetAddressType, e.g. IPv4 or IPv6, is identified by the
            mgmdInverseHostCacheAddressType
            variable in the mgmdInverseHostCache table."
    ::= { mgmdInverseHostCacheEntry 3 }


--
--  The MGMD Reverse Router interface/cache lookup Table
--

mgmdInverseRouterCacheTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdInverseRouterCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the interfaces which
              are members of a particular group. This is a reverse
            lookup table for entries in the mgmdRouterCacheTable."
    ::= { mgmdMIBObjects 8 }

mgmdInverseRouterCacheEntry OBJECT-TYPE
    SYNTAX     MgmdInverseRouterCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the
            mgmdInverseRouterCacheTable."
    INDEX      { mgmdInverseRouterCacheIfIndex,
                 mgmdInverseRouterCacheAddressType,
                 mgmdInverseRouterCacheAddress}
    ::= { mgmdInverseRouterCacheTable 1 }


MgmdInverseRouterCacheEntry ::= SEQUENCE {
    mgmdInverseRouterCacheIfIndex            InterfaceIndex,
    mgmdInverseRouterCacheAddressType        InetAddressType,
    mgmdInverseRouterCacheAddress            InetAddress
}

mgmdInverseRouterCacheIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information."
    ::= { mgmdInverseRouterCacheEntry 1 }

mgmdInverseRouterCacheAddressType OBJECT-TYPE
    SYNTAX     InetAddressType


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    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the mgmdInverseRouterCacheTable entry."
    ::= { mgmdInverseRouterCacheEntry 2 }

mgmdInverseRouterCacheAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information about an interface. The
            InetAddressType, e.g.IPv4 or IPv6, is identified by the
            mgmdInverseRouterCacheAddressType variable in the
            mgmdInverseRouterCache table."
    ::= { mgmdInverseRouterCacheEntry 3 }


--
--  The MGMD Host Source list Table
--

mgmdHostSrcListTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdHostSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the Source List entries
             corresponding to each interface and multicast group pair on
             a host."
    ::= { mgmdMIBObjects 9 }

mgmdHostSrcListEntry OBJECT-TYPE
    SYNTAX     MgmdHostSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the mgmdHostSrcListTable."
    INDEX      { mgmdHostSrcListAddressType, mgmdHostSrcListAddress,
                 mgmdHostSrcListIfIndex, mgmdHostSrcListHostAddress }
    ::= { mgmdHostSrcListTable 1 }


MgmdHostSrcListEntry ::= SEQUENCE {
    mgmdHostSrcListAddressType      InetAddressType,
    mgmdHostSrcListAddress          InetAddress,
    mgmdHostSrcListIfIndex          InterfaceIndex,
    mgmdHostSrcListHostAddress      InetAddress,
    mgmdHostSrcListExpire           TimeTicks
}

mgmdHostSrcListAddressType OBJECT-TYPE


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    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the InetAddress variables in this
            table. This value applies to the mgmdHostSrcListHostAddress
            and mgmdHostSrcListAddress entries."
    ::= { mgmdHostSrcListEntry 1 }

mgmdHostSrcListAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information."
    ::= { mgmdHostSrcListEntry 2 }

mgmdHostSrcListIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information
            for an IP multicast group address."
    ::= { mgmdHostSrcListEntry 3 }

mgmdHostSrcListHostAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The host address to which this entry
            corresponds. The mgmdHostCacheSourceFilterMode value for
            this Group address and interface indicates whether this
            Host address is included or excluded."
    ::= { mgmdHostSrcListEntry 4 }

mgmdHostSrcListExpire OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "This value indicates the relevance of the SrcList entry,
            whereby a non-zero value indicates this is an INCLUDE state
            value, and a zero value indicates this to be an EXCLUDE
            state value."
    ::= { mgmdHostSrcListEntry 5 }


--
--  The MGMD Router Source list Table
--


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mgmdRouterSrcListTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF MgmdRouterSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the Source List entries
             corresponding to each interface and multicast group pair on
             a Router."
    ::= { mgmdMIBObjects 10 }

mgmdRouterSrcListEntry OBJECT-TYPE
    SYNTAX     MgmdRouterSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the mgmdRouterSrcListTable."
    INDEX      { mgmdRouterSrcListAddressType, mgmdRouterSrcListAddress,
mgmdRouterSrcListIfIndex, mgmdRouterSrcListHostAddress }
    ::= { mgmdRouterSrcListTable 1 }


MgmdRouterSrcListEntry ::= SEQUENCE {
    mgmdRouterSrcListAddressType      InetAddressType,
    mgmdRouterSrcListAddress          InetAddress,
    mgmdRouterSrcListIfIndex          InterfaceIndex,
    mgmdRouterSrcListHostAddress      InetAddress,
    mgmdRouterSrcListExpire           TimeTicks
}

mgmdRouterSrcListAddressType OBJECT-TYPE
    SYNTAX     InetAddressType
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The address type of the InetAddress variables in this
            table. This value applies to the
            mgmdRouterSrcListHostAddress and mgmdRouterSrcListAddress
            entries."
    ::= { mgmdRouterSrcListEntry 1 }

mgmdRouterSrcListAddress OBJECT-TYPE

    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information."
    ::= { mgmdRouterSrcListEntry 2 }

mgmdRouterSrcListIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex


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    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The interface for which this entry contains information
            for an IP multicast group address."
    ::= { mgmdRouterSrcListEntry 3 }

mgmdRouterSrcListHostAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE(4|16))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The host address to which this entry
            corresponds. The mgmdRouterCacheSourceFilterMode value for
                        this Group address and interface indicates whether this
                        Host address is included or excluded."
    ::= { mgmdRouterSrcListEntry 4 }

mgmdRouterSrcListExpire OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "This value indicates the relevance of the SrcList entry,
            whereby a non-zero value indicates this is an INCLUDE state
            value, and a zero value indicates this to be an EXCLUDE
            state value."
    ::= { mgmdRouterSrcListEntry 5 }

-- conformance information


mgmdMIBConformance
                 OBJECT IDENTIFIER ::= { mgmdStdMIB 2 }
mgmdMIBCompliance  OBJECT IDENTIFIER ::= { mgmdMIBConformance 3 }
mgmdMIBGroups    OBJECT IDENTIFIER ::= { mgmdMIBConformance 4 }


-- Protocol Version Conformance

mgmdIgmpV1HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for hosts running IGMPv1, RFC 1112
            [5], and implementing the MGMD MIB. MGMDv1 applies to hosts
            and routers running IGMPv1 only. IGMPv1 hosts must support
            the IPv4 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdHostBaseMIBGroup }
    GROUPS { mgmdHostOptMIBGroup }
    OBJECT     mgmdHostInterfaceStatus
    MIN-ACCESS read-only
    DESCRIPTION


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             "Write access is not required."
    ::= { mgmdMIBCompliance 1 }

mgmdIgmpV1RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for routers running IGMPv1, RFC 1112
            [5], and implementing the MGMD MIB. MGMDv1 applies to hosts
            and routers running IGMPv1 only. IGMPv1 routers must support
            the IPv4 address type "
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdRouterBaseMIBGroup }
    OBJECT     mgmdRouterInterfaceStatus
    MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 2 }

mgmdIgmpV2HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for hosts running IGMPv2, RFC 2236
            [6], and implementing the MGMD MIB. MGMDv2 applies to hosts
            and routers running IGMPv2 or MLDv1. IGMPv2 hosts must
            support the IPv4 address type"
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdHostBaseMIBGroup , mgmdV2IgmpHostMIBGroup }
    GROUPS { mgmdV2HostOptMIBGroup }
    ::= { mgmdMIBCompliance 3 }

mgmdIgmpV2RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for routers running IGMPv2, RFC 2236
            [6], and implementing the MGMD MIB. MGMDv2 applies to hosts
            and routers running IGMPv2 or MLDv1. IGMPv2 routers must
            support the IPv4 address type "
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdRouterBaseMIBGroup,
                       mgmdV2RouterBaseMIBGroup,
                       mgmdV2IgmpRouterMIBGroup
                     }
    GROUPS { mgmdV2RouterOptMIBGroup, mgmdV2ProxyMIBGroup }
    OBJECT     mgmdRouterInterfaceStatus
    MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 4 }

mgmdMldV1HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current

    DESCRIPTION


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            "The version statement for hosts running MLDv1, RFC 2710
            [8], and implementing the MGMD MIB. MGMDv2 applies to hosts
            and routers running IGMPv2 or MLDv1. MLDv1 hosts must
            support the IPv6 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdHostBaseMIBGroup }
    GROUPS { mgmdV2HostOptMIBGroup }
    ::= { mgmdMIBCompliance 5 }

mgmdMldV1RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for routers running MLDv1, RFC 2710
            [8], and implementing the MGMD MIB. MGMDv2 applies to hosts
            and routers running IGMPv2 or MLDv1. MLDv1 routers must
            support the IPv6 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdRouterBaseMIBGroup,
                       mgmdV2RouterBaseMIBGroup
                     }
    GROUPS { mgmdV2RouterOptMIBGroup, mgmdV2ProxyMIBGroup }
    OBJECT     mgmdRouterInterfaceStatus
        MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 6 }

mgmdIgmpV3HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for hosts running IGMPv3, RFC 3376
            [7], and implementing the MGMD MIB. MGMDv3 applies to hosts
            and routers running IGMPv3 or MLDv2. IGMPv3 hosts must
            support the IPv4 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdHostBaseMIBGroup,
                       mgmdV2IgmpHostMIBGroup,
                       mgmdV3HostMIBGroup
                     }
    OBJECT     mgmdHostInterfaceStatus
        MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 7 }

mgmdIgmpV3RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for routers running IGMPv3, RFC 3376
            [7], and implementing the MGMD MIB. MGMDv3 applies to hosts
            and routers running IGMPv3 or MLDv2. IGMPv3 routers must
            support the IPv4 address type."
    MODULE  -- this module


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    MANDATORY-GROUPS { mgmdRouterBaseMIBGroup,
                       mgmdV2RouterBaseMIBGroup,
                       mgmdV2IgmpRouterMIBGroup,
                       mgmdV3RouterMIBGroup
                     }
    OBJECT     mgmdRouterInterfaceStatus
        MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 8 }

mgmdMldV2HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for hosts running MLDv2 [9] and
             implementing the MGMD MIB. MGMDv3 applies to hosts and
             routers running IGMPv3 or MLDv2. MLDv2 hosts must support
             the IPv6 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdHostBaseMIBGroup,
                       mgmdV3HostMIBGroup
                     }
    OBJECT     mgmdHostInterfaceStatus
    MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 9 }

mgmdMldV2RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The version statement for routers running MLDv2 [9] and
             implementing the MGMD MIB. MGMDv3 applies to hosts and
             routers running IGMPv3 or MLDv2. MLDv2 routers must
             support the IPv6 address type."
    MODULE  -- this module
    MANDATORY-GROUPS { mgmdRouterBaseMIBGroup,
                       mgmdV2RouterBaseMIBGroup,
                       mgmdV3RouterMIBGroup
                     }
    OBJECT     mgmdRouterInterfaceStatus
    MIN-ACCESS read-only
    DESCRIPTION
             "Write access is not required."
    ::= { mgmdMIBCompliance 10 }



-- units of conformance

mgmdHostBaseMIBGroup OBJECT-GROUP
    OBJECTS { mgmdHostInterfaceStatus }
    STATUS  current


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    DESCRIPTION
            "The basic collection of objects providing management of
            MGMD version 1, 2 or 3 for Hosts."
    ::= { mgmdMIBGroups 1 }

mgmdRouterBaseMIBGroup OBJECT-GROUP
    OBJECTS { mgmdRouterInterfaceStatus,
              mgmdRouterCacheUpTime, mgmdRouterCacheExpiryTime,
              mgmdRouterInterfaceJoins, mgmdRouterInterfaceGroups,
              mgmdRouterCacheLastReporter,
              mgmdRouterInterfaceQuerierUpTime,
              mgmdRouterInterfaceQuerierExpiryTime,
              mgmdRouterInterfaceQueryInterval
            }
    STATUS  current
    DESCRIPTION
            "The basic collection of objects providing management of
            MGMD version 1, 2 or 3 for Routers."
    ::= { mgmdMIBGroups 2 }

mgmdV2IgmpHostMIBGroup OBJECT-GROUP
    OBJECTS { mgmdHostInterfaceVersion,
              mgmdHostInterfaceVersion1QuerierTimer
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 2 in hosts for MGMD version 2 compliance."
    ::= { mgmdMIBGroups 3 }

mgmdHostOptMIBGroup OBJECT-GROUP
    OBJECTS { mgmdHostCacheLastReporter, mgmdHostCacheUpTime,
              mgmdHostInterfaceQuerier }
    STATUS  current
    DESCRIPTION
            "A collection of optional objects for MGMD hosts.
            Supporting this group can be especially useful in an
            environment with a router which does not support the MGMD
            MIB."
    ::= { mgmdMIBGroups 4 }

mgmdV2HostOptMIBGroup OBJECT-GROUP
    OBJECTS { mgmdInverseHostCacheAddress }
    STATUS  current
    DESCRIPTION
            "An additional optional object for management of MGMD
            version 2 in hosts."
    ::= { mgmdMIBGroups 5 }

mgmdV2RouterBaseMIBGroup OBJECT-GROUP
    OBJECTS { mgmdRouterInterfaceVersion, mgmdRouterInterfaceQuerier,
              mgmdRouterInterfaceQueryMaxResponseTime,
              mgmdRouterInterfaceRobustness,


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              mgmdRouterInterfaceWrongVersionQueries,
              mgmdRouterInterfaceLastMembQueryIntvl,
              mgmdRouterInterfaceLastMembQueryCount,
              mgmdRouterInterfaceStartupQueryCount,
              mgmdRouterInterfaceStartupQueryInterval
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of MGMD
            version 2 in routers."
    ::= { mgmdMIBGroups 6 }

mgmdV2IgmpRouterMIBGroup OBJECT-GROUP
    OBJECTS { mgmdRouterCacheVersion1HostTimer }
    STATUS  current
    DESCRIPTION
            "A collection of further objects required by IGMPv2 routers
                        for MGMD version 2 compliance. "
    ::= { mgmdMIBGroups 7 }

mgmdV2ProxyMIBGroup OBJECT-GROUP
    OBJECTS { mgmdRouterInterfaceProxyIfIndex }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of MGMD
            proxy devices."
    ::= { mgmdMIBGroups 8 }

mgmdV2RouterOptMIBGroup OBJECT-GROUP
    OBJECTS { mgmdInverseRouterCacheAddress }
    STATUS  current
    DESCRIPTION
            "An additional optional object for management of MGMD
            version 2 in routers."
    ::= { mgmdMIBGroups 9 }

mgmdV3HostMIBGroup OBJECT-GROUP
    OBJECTS { mgmdHostInterfaceVersion2QuerierTimer,
              mgmdHostCacheSourceFilterMode,
              mgmdHostInterfaceVersion3Robustness,
              mgmdHostSrcListHostAddress,
              mgmdHostSrcListExpire
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of MGMD
            version 3 in hosts."
    ::= { mgmdMIBGroups 10 }

mgmdV3RouterMIBGroup OBJECT-GROUP
    OBJECTS { mgmdRouterCacheSourceFilterMode,
              mgmdRouterCacheVersion2HostTimer,
              mgmdRouterCacheExcludeModeExpiryTimer,


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              mgmdRouterSrcListHostAddress,
              mgmdRouterSrcListExpire
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of MGMD
            version 3 in routers."
    ::= { mgmdMIBGroups 11 }

END



5. Security Considerations

   This MIB contains readable objects whose values provide information
   related to multicast sessions.  Some of these objects could contain
   sensitive information.  In particular, the mgmdCacheLastReporter
   object can be used to identify machines which are
   listening to a given group address.  There are also a number of
   objects that have a MAX-ACCESS clause of read-write and/or read-
   create, which allow an administrator to configure MGMD state in the
   router.

   While unauthorized access to the readable objects is relatively
   innocuous, unauthorized access to the write-able objects could cause
   a denial of service.  Hence, the support for SET operations in a
   non-secure environment without proper protection can have a negative
   effect on network operations.

   SNMPv1 by itself is such an insecure environment.  Even if the
   network itself is secure (for example by using IPSec), even then,
   there is no control as to who on the secure network is allowed to
   access and SET (change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework.  Specifically, the use
   of the User-based Security Model RFC 2574 [12] and the View-based
   Access Control Model RFC 2575 [15] is recommended.

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


6. IANA Considerations

   This MIB introduces a new protocol description, Multicast Group
   Membership Discovery, that encompasses both the IPv4 Multicast
   discovery protocol, IGMP, and the IPv6 Multicast discovery protocol,
   MLD. As such it requires the allocation of a new OID within the MIB
   hierarchy. MGMD is a superset of the objects defined in RFCs 2933 and


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               Multicast Group Membership Discovery MIB

   3019 and therefore there is no new protocol definition involved in
   this specification.


6. Contributors

   The authors of RFC 2933 and RFC 3019 from which this document is
   derived are:

      Keith McCloghrie
      cisco Systems, Inc.
      170 West Tasman Drive
      San Jose, CA  95134-1706

      Phone:  408 526 5260
      EMail: kzm@cisco.com


      Dino Farinacci
      Procket Networks
      3850 North First Street
      San Jose, CA 95134

      Phone:  408-954-7909
      Email: dino@procket.com

      Dave Thaler
      Microsoft Corporation
      One Microsoft Way
      Redmond, WA  48105-6399

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


      Brian Haberman
      Nortel Networks
      4309 Emperor Blvd.
      Suite 200
      Durham, NC 27703
      USA

      Phone: 919-992-4439
      EMail: haberman@nortelnetworks.com


      Randy Worzella
      IBM Corporation
      800 Park Office Drive
      Research Triangle Park,
      NC 27709
      USA



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               Multicast Group Membership Discovery MIB

      Phone: 919-254-2202
      EMail: worzella@us.ibm.com


7. Acknowledgements

   Special thanks to James Lingard for detailed comments on the
   draft, also to Bill Fenner, Brian Haberman and Dave Thaler for
   feedback and suggestions regarding the MIB.


8. Author's Address

   Julian Chesterfield
   University of Cambridge,
   Computer Laboratory,
   15 JJ Thompson Avenue,
   Cambridge,
   CB3 0FD
   UK


9. References

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

    [2] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
        Rose, M. and S. Waldbusser, "Textual Conventions for
        SMIv2", STD 58, RFC 2579, April 1999.

    [3] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
        Rose, M. and S. Waldbusser, "Conformance Statements for
        SMIv2", STD 58, RFC 2580, April 1999.

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

    [5] Deering, S., "Host Extensions for IP Multicasting", STD 5, RFC
         1112, August 1989.

    [6] Fenner, W., "Internet Group Management Protocol, Version 2",
         RFC 2236, November 1997.

    [7] Cain, B., Deering, S., Fenner, W., Kouvelas, I., Thyagarajan,
         A., "Internet Group Management Protocol, Version 3", RFC 3376,
         Oct 2002.

    [8] Deering, S., Fenner, W., Haberman, B., "Multicast Listener
         Discovery for IPv6", RFC 2710", October 1999.



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               Multicast Group Membership Discovery MIB

    [9] Vida, R., Costa, L., "Multicast Listener Discovery Version 2
         (MLDv2) for IPv6", <draft-vida-mld-v2-07.txt>.

    [10] McCloghrie, K., Farinacci, D., Thaler, D., "Internet Group
         Management Protocol MIB", RFC 2933, October 2000.

    [11] Haberman, B., Worzella, R., "IP Version 6 Management
         Information Base for The Multicast Listener Discovery
         Protocol, RFC 3019", January 2001.


10. Full Copyright Statement

Copyright (C) The Internet Society (2004).  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.

This document and the information contained herein are provided on an
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