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Versions: 00                                                            
                                                       J. Chesterfield,
                                                           Draft Editor
   Internet Draft                                  AT&T Labs - Research
   Document:
   draft-ietf-magma-rfc2933-update-00.txt
   Expires: December 2002                                     June 2002


                  Internet Group Management Protocol MIB


Status of this Memo

   This document is an Internet-Draft and is in full conformance
   with all provisions of Section 10 of RFC2026.


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

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

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


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).

Table of Contents

   1. Introduction....................................................2
   2. The SNMP Management Framework...................................2
   3. Overview........................................................3
   4. Definitions.....................................................3
   5. Security Considerations........................................17
   6. Contributors...................................................17
   7. Acknowledgements...............................................18
   8. Author's Addresses.............................................18
   9. References.....................................................18
   10. Full Copyright Statement......................................19

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                Internet Group Management Protocol MIB



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 [17], version 2 [18] or
   version 3 [19]. This version of the MIB is an update to rfc2933
   incorporating IGMPv3 changes to enable "source filtering" in routers
   and hosts.  All of this MIB module is applicable to IPv4 multicast
   routers; a subset is applicable to hosts implementing IGMP.  Since
   IGMP is specific to IPv4, this MIB does not support management of
   equivalent functionality for other address families, such as IPv6.
   Such management may be supported by other MIBs.

2. The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

     . An overall architecture, described in RFC 2571 [RFC2571].

     . Mechanisms for describing and naming objects and events for the
        purpose of management.  The first version of this Structure of
        Management Information (SMI) is called SMIv1 and described in
        STD 16, RFC 1155 [1], STD 16, RFC 1212 [3] and RFC 1215 [4].
        The second version, called SMIv2, is described in STD 58, RFC
        2578 [5], STD 58, RFC 2579 [6] and STD 58, RFC 2580 [7].

     . Message protocols for transferring management information.  The
        first version of the SNMP message protocol is called SNMPv1 and
        described in STD 15, RFC 1157 [8].  A second version of the
        SNMP message protocol, which is not an Internet standards track
        protocol, is called SNMPv2c and described in RFC 1901 [9] and
        RFC 1906 [10].  The third version of the message protocol is
        called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and
        RFC 2574 [12].

     . Protocol operations for accessing management information.  The
        first set of protocol operations and associated PDU formats is
        described in STD 15, RFC 1157 [8].  A second set of protocol
        operations and associated PDU formats is described in RFC 1905
        [13].

     . A set of fundamental applications described in RFC 2573 [14]
        and the view-based access control mechanism described in RFC
        2575 [15].

   A more detailed introduction to the current SNMP Management
   Framework can be found in RFC 2570 [16].

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

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                Internet Group Management Protocol MIB


   This memo specifies a MIB module that is compliant to the SMIv2.  A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64).  Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process.  However, this loss of machine
   readable information is not considered to change the semantics of
   the MIB.

3. Overview

   This MIB module contains three tables:

     1. the IGMP Interface Table which contains one row for each
        interface on which IGMP is enabled,

     2. the IGMP Cache Table which contains one row for each IP
        multicast group for which there are members on a particular
        interface, and
     3. the IGMP SrcList Table which contains one row for each entry in
        the source filter record for an interface and multicast group
        pair.

   All tables are intended to be implemented by hosts and routers, but
   some columnar objects in the first and second tables apply only to
   routers.

4. Definitions
IGMP-STD-MIB DEFINITIONS ::= BEGIN

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

igmpStdMIB MODULE-IDENTITY
    LAST-UPDATED "200206140000Z" -- June 14, 2002
    ORGANIZATION "IETF MAGMA Working Group."
    CONTACT-INFO
            " Dave Thaler
              Microsoft Corporation
              One Microsoft Way
              Redmond, WA  98052-6399
              US

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



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                Internet Group Management Protocol MIB

              Julian Chesterfield
              AT&T Research-Labs
              75 Willow Road
              Menlo Park, CA 94025
              US

              Phone: +1 650 330 7762
              EMail: julian@research.att.com"
    DESCRIPTION
            "The MIB module for IGMP Management."

    REVISION     "200009280000Z" -- September 28, 2000

    DESCRIPTION
            "Initial version, published as RFC 2933.?

    REVISION     "200206140000Z" -- June 14, 2002

    DESCRIPTION
            "RFC 2933 revised 6/02 to incorporate IGMPv3 changes."

    ::= { mib-2 85 }


igmpMIBObjects     OBJECT IDENTIFIER ::= { igmpStdMIB 1 }

--
--  The IGMP Interface Table
--

igmpInterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IgmpInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the interfaces on which IGMP
            is enabled."
    ::= { igmpMIBObjects 1 }

igmpInterfaceEntry OBJECT-TYPE
    SYNTAX     IgmpInterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) representing an interface on
            which IGMP is enabled."
    INDEX      { igmpInterfaceIfIndex }
    ::= { igmpInterfaceTable 1 }

IgmpInterfaceEntry ::= SEQUENCE {
    igmpInterfaceIfIndex               InterfaceIndex,
    igmpInterfaceQueryInterval         Unsigned32,
    igmpInterfaceStatus                RowStatus,
    igmpInterfaceVersion               Unsigned32,
    igmpInterfaceQuerier               IpAddress,

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    igmpInterfaceQueryMaxResponseTime  Unsigned32,
    igmpInterfaceQuerierUpTime         TimeTicks,
    igmpInterfaceQuerierExpiryTime     TimeTicks,
    igmpInterfaceVersion1QuerierTimer  TimeTicks,
    igmpInterfaceWrongVersionQueries   Counter32,
    igmpInterfaceJoins                 Counter32,
    igmpInterfaceProxyIfIndex          InterfaceIndexOrZero,
    igmpInterfaceGroups                Gauge32,
    igmpInterfaceRobustness            Unsigned32,
    igmpInterfaceLastMembQueryIntvl    Unsigned32,
    igmpInterfaceVersion2QuerierTimer  TimeTicks
}


igmpInterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The ifIndex value of the interface for which IGMP is
            enabled."
    ::= { igmpInterfaceEntry 1 }

igmpInterfaceQueryInterval OBJECT-TYPE
    SYNTAX     Unsigned32
    UNITS      "seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The frequency at which IGMP Host-Query packets are
            transmitted on this interface."
    DEFVAL     { 125 }
    ::= { igmpInterfaceEntry 2 }

igmpInterfaceStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The activation of a row enables IGMP on the interface.  The
            destruction of a row disables IGMP on the interface."
    ::= { igmpInterfaceEntry 3 }

igmpInterfaceVersion OBJECT-TYPE
    SYNTAX     Unsigned32
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The version of IGMP which is running on this interface.
            This object can be used to configure a router capable of
            running either value.  For IGMP to function correctly, all
            routers on a LAN must be configured to run the same version
            of IGMP on that LAN."
    DEFVAL     { 2 }

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    ::= { igmpInterfaceEntry 4 }

igmpInterfaceQuerier OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address of the IGMP Querier on the IP subnet to which
            this interface is attached."
    ::= { igmpInterfaceEntry 5 }

igmpInterfaceQueryMaxResponseTime OBJECT-TYPE
    SYNTAX     Unsigned32 (0..255)
    UNITS      "tenths of seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The maximum query response time advertised in IGMPv2
            queries on this interface."
    DEFVAL     { 100 }
    ::= { igmpInterfaceEntry 6 }

igmpInterfaceQuerierUpTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time since igmpInterfaceQuerier was last changed."
    ::= { igmpInterfaceEntry 7 }

igmpInterfaceQuerierExpiryTime 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."
    ::= { igmpInterfaceEntry 8 }

igmpInterfaceVersion1QuerierTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the host assumes that there are no
            IGMPv1 routers present on the interface.  While this is non-
            zero, the host will reply to all queries with version 1
            membership reports."
    ::= { igmpInterfaceEntry 9 }

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

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    STATUS     current
    DESCRIPTION

            "The number of queries received whose IGMP version does not
            match igmpInterfaceVersion, over the lifetime of the row
            entry.  IGMP requires that all routers on a LAN be
            configured to run the same version of IGMP.  Thus, if any
            queries are received with the wrong version, this indicates
            a configuration error."
    ::= { igmpInterfaceEntry 10 }

igmpInterfaceJoins 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 activity
            over the lifetime of the row entry."
    ::= { igmpInterfaceEntry 11 }

igmpInterfaceProxyIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndexOrZero
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "Some devices implement a form of IGMP proxying whereby
            memberships learned on the interface represented by this
            row, cause IGMP Host Membership Reports to be sent on the
            interface whose ifIndex value is given by this object.  Such
            a device would implement the igmpV2RouterMIBGroup only on
            its router interfaces (those interfaces with non-zero
            igmpInterfaceProxyIfIndex).  Typically, the value of this
            object is 0, indicating that no proxying is being done."
    DEFVAL     { 0 }
    ::= { igmpInterfaceEntry 12 }

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

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

    STATUS     current
    DESCRIPTION

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            "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 is
            robust to (Robustness Variable-1) packet losses."
    DEFVAL     { 2 }
    ::= { igmpInterfaceEntry 14 }

igmpInterfaceLastMembQueryIntvl OBJECT-TYPE
    SYNTAX     Unsigned32 (0..255)
    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 igmpInterfaceVersion is 1."
    DEFVAL     { 10 }
    ::= { igmpInterfaceEntry 15 }

igmpInterfaceVersion2QuerierTimer OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The time remaining until the host assumes that there are no
            IGMPv2 routers present on the interface.  While this is non-
            zero, the host will reply to all queries with version 1 or 2
            membership reports."
    ::= { igmpInterfaceEntry 16 }

--
--  The IGMP Cache Table
--

igmpCacheTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IgmpCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the IP multicast groups for
            which there are members on a particular interface."
    ::= { igmpMIBObjects 2 }

igmpCacheEntry OBJECT-TYPE
    SYNTAX     IgmpCacheEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the igmpCacheTable."

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    INDEX      { igmpCacheAddress, igmpCacheIfIndex }
    ::= { igmpCacheTable 1 }


IgmpCacheEntry ::= SEQUENCE {
    igmpCacheAddress            IpAddress,
    igmpCacheIfIndex            InterfaceIndex,
    igmpCacheSelf               TruthValue,
    igmpCacheLastReporter       IpAddress,
    igmpCacheUpTime             TimeTicks,
    igmpCacheExpiryTime         TimeTicks,
    igmpCacheStatus             RowStatus,
    igmpCacheVersion1HostTimer  TimeTicks,
    igmpCacheVersion2HostTimer  TimeTicks,
    igmpCacheSourceFilterMode   Integer32
}

igmpCacheAddress OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information."
    ::= { igmpCacheEntry 1 }

igmpCacheIfIndex 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."
    ::= { igmpCacheEntry 2 }

igmpCacheSelf OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "An indication of whether the local system is a member of
            this group address on this interface."
    DEFVAL     { true }
    ::= { igmpCacheEntry 3 }

igmpCacheLastReporter OBJECT-TYPE
    SYNTAX     IpAddress
    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 0.0.0.0."

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    ::= { igmpCacheEntry 4 }

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

igmpCacheExpiryTime OBJECT-TYPE
    SYNTAX     TimeTicks
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The minimum amount of time remaining before this entry will
            be aged out.  A value of 0 indicates that the entry is only
            present because igmpCacheSelf is true and that if the router
            left the group, this entry would be aged out immediately.
            Note that some implementations may process membership
            reports from the local system in the same way as reports
            from other hosts, so a value of 0 is not required."
    ::= { igmpCacheEntry 6 }

igmpCacheStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The status of this entry."
    ::= { igmpCacheEntry 7 }

igmpCacheVersion1HostTimer 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 IGMP version 1 members on the IP
            subnet attached to this interface.  Upon hearing any IGMPv1
            Membership Report, this value is reset to the group
            membership timer.  While this time remaining is non-zero,
            the local router ignores any IGMPv2 Leave messages for this
            group that it receives on this interface."
    ::= { igmpCacheEntry 8 }

igmpCacheVersion2HostTimer 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 IGMP version 2 members on the IP

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            subnet attached to this interface.  Upon hearing any IGMPv2
            Membership Report, this value is reset to the group
            membership timer."
    ::= { igmpCacheEntry 9 }

igmpCacheSourceFilterMode OBJECT-TYPE
    SYNTAX     Integer32 {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 SrcList Table for IGMPv3 interfaces."
    ::= { igmpCacheEntry 10 }


--
--  The IGMP Source list Table
--

igmpSrcListTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IgmpSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table listing the Source List entries
             corresponding to each Interface filter mode record."
    ::= { igmpMIBObjects 3 }

igmpSrcListEntry OBJECT-TYPE
    SYNTAX     IgmpSrcListEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) in the igmpSrcListTable."
    INDEX      { igmpSrcListAddress, igmpSrcListIfIndex,
igmpSrcListHostAddress }
    ::= { igmpSrcListTable 1 }


IgmpSrcListEntry ::= SEQUENCE {
    igmpSrcListAddress          IpAddress,
    igmpSrcListIfIndex          InterfaceIndex,
    igmpSrcListHostAddress      IpAddress,
    igmpSrcListStatus           RowStatus
}

igmpSrcListAddress OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current

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    DESCRIPTION
            "The IP multicast group address for which this entry
            contains information."
    ::= { igmpSrcListEntry 1 }

igmpSrcListIfIndex 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."
    ::= { igmpSrcListEntry 2 }

igmpSrcListHostAddress OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The host address to which this entry
            corresponds. The CacheSourceFilterMode value for this Group
            address and interface indicates whether this Host address
            is included or excluded."
    ::= { igmpSrcListEntry 3 }

igmpSrcListStatus OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
            "The status of this entry."
    ::= { igmpSrcListEntry 4 }

-- conformance information


igmpMIBConformance
               OBJECT IDENTIFIER ::= { igmpStdMIB 2 }
igmpMIBCompliances
               OBJECT IDENTIFIER ::= { igmpMIBConformance 1 }
igmpMIBGroups  OBJECT IDENTIFIER ::= { igmpMIBConformance 2 }


-- compliance statements

igmpV1HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for hosts running IGMPv1 and
            implementing the IGMP MIB."
    MODULE  -- this module
    MANDATORY-GROUPS { igmpBaseMIBGroup }

    OBJECT     igmpInterfaceStatus

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

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

    ::= { igmpMIBCompliances 1 }

igmpV1RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for routers running IGMPv1 and
            implementing the IGMP MIB."
    MODULE  -- this module
      MANDATORY-GROUPS { igmpBaseMIBGroup,
                       igmpRouterMIBGroup
                     }

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

    ::= { igmpMIBCompliances 2 }

igmpV2HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for hosts running IGMPv2 and
            implementing the IGMP MIB."
    MODULE  -- this module
    MANDATORY-GROUPS { igmpBaseMIBGroup,
                       igmpV2HostMIBGroup
                     }

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

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

    ::= { igmpMIBCompliances 3 }


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igmpV2RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for routers running IGMPv2 and
            implementing the IGMP MIB."
    MODULE  -- this module
    MANDATORY-GROUPS { igmpBaseMIBGroup,
                       igmpRouterMIBGroup,
                       igmpV2RouterMIBGroup
                     }

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

    ::= { igmpMIBCompliances 4 }

igmpV3HostMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for hosts running IGMPv3 and
            implementing the IGMP MIB."
    MODULE  -- this module
    MANDATORY-GROUPS { igmpBaseMIBGroup,
                       igmpV2HostMIBGroup,
                       igmpV3HostMIBGroup
                     }

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

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

    ::= { igmpMIBCompliances 5 }

igmpV3RouterMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for routers running IGMPv3 and
            implementing the IGMP MIB."
    MODULE  -- this module
    MANDATORY-GROUPS { igmpBaseMIBGroup,
                       igmpRouterMIBGroup,
                       igmpV2RouterMIBGroup,

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                       igmpV3RouterMIBGroup
                     }

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

    ::= { igmpMIBCompliances 6 }

-- units of conformance

igmpBaseMIBGroup OBJECT-GROUP
    OBJECTS { igmpCacheSelf,
              igmpCacheStatus, igmpInterfaceStatus
            }
    STATUS  current
    DESCRIPTION
            "The basic collection of objects providing management of
            IGMP version 1, 2 or 3."
    ::= { igmpMIBGroups 1 }


igmpRouterMIBGroup OBJECT-GROUP
    OBJECTS { igmpCacheUpTime, igmpCacheExpiryTime,
              igmpInterfaceJoins, igmpInterfaceGroups,
              igmpCacheLastReporter, igmpInterfaceQuerierUpTime,
              igmpInterfaceQuerierExpiryTime,
              igmpInterfaceQueryInterval
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 1, 2 or 3 in routers."
    ::= { igmpMIBGroups 2 }


igmpV2HostMIBGroup OBJECT-GROUP
    OBJECTS { igmpInterfaceVersion1QuerierTimer }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 2 in hosts."
    ::= { igmpMIBGroups 3 }

igmpHostOptMIBGroup OBJECT-GROUP
    OBJECTS { igmpCacheLastReporter, igmpInterfaceQuerier }
    STATUS  current
    DESCRIPTION
            "A collection of optional objects for IGMP hosts.

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            Supporting this group can be especially useful in an
            environment with a router which does not support the IGMP
            MIB."
    ::= { igmpMIBGroups 4 }

igmpV2RouterMIBGroup OBJECT-GROUP
    OBJECTS { igmpInterfaceVersion, igmpInterfaceQuerier,
              igmpInterfaceQueryMaxResponseTime,
              igmpInterfaceRobustness,
              igmpInterfaceWrongVersionQueries,
              igmpInterfaceLastMembQueryIntvl,
              igmpCacheVersion1HostTimer
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 2 in routers."
    ::= { igmpMIBGroups 5 }

igmpV2ProxyMIBGroup OBJECT-GROUP
    OBJECTS { igmpInterfaceProxyIfIndex }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            proxy devices."
    ::= { igmpMIBGroups 6 }

igmpV3HostMIBGroup OBJECT-GROUP
    OBJECTS { igmpCacheSourceFilterMode,
              igmpInterfaceVersion2QuerierTimer,
              igmpSrcListAddress,
              igmpSrcListIfIndex,
              igmpSrcListHostAddress
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 3 in hosts."
    ::= { igmpMIBGroups 7 }

igmpV3RouterMIBGroup OBJECT-GROUP
    OBJECTS { igmpCacheSourceFilterMode,
              igmpCacheVersion2HostTimer,
              igmpSrcListAddress,
              igmpSrcListIfIndex,
              igmpSrcListHostAddress
            }
    STATUS  current
    DESCRIPTION
            "A collection of additional objects for management of IGMP
            version 3 in routers."
    ::= { igmpMIBGroups 8 }

END


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                Internet Group Management Protocol MIB

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 igmpCacheSelf and
   igmpCacheLastReporter 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 IGMP 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. Contributors

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

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

   Phone: +1 408 526 5260
   EMail: kzm@cisco.com


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

   Phone: +1 408-954-7909
   Email: dino@procket.com



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                Internet Group Management Protocol MIB

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

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


7. Acknowledgements

   Thanks to Bill Fenner for feedback and suggestions regarding the MIB.

8. Author's Address

   Julian Chesterfield
   AT&T Labs - Research
   75 Willow Road
   Menlo Park
   CA, 94301

9. References


   [1]  Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2571, April 1999.

   [2]  Rose, M., and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", STD 16, RFC
        1155, May 1990.

   [3]  Rose, M., and K. McCloghrie, "Concise MIB Definitions", STD 16,
        RFC 1212, March 1991.

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

   [5]  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.

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

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

   [8]  Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, May 1990.


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                Internet Group Management Protocol MIB

   [9]  Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
        "Introduction to Community-based SNMPv2", RFC 1901, January
        1996.

   [10] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
        "Transport Mappings for Version 2 of the Simple Network
        Management Protocol (SNMPv2)", RFC 1906, January 1996.

   [11] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2572, April 1999.

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

   [13] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
        Operations for Version 2 of the Simple Network Management
        Protocol (SNMPv2)", RFC 1905, January 1996.

   [14] Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications", RFC
        2573, April 1999.

   [15] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access
        Control Model (VACM) for the Simple Network Management Protocol
        (SNMP)", RFC 2575, April 1999.

   [16] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction
        to Version 3 of the Internet-standard Network Management
        Framework", RFC 2570, April 1999.

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

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

   [19] Cain, B., Deering, S., Fenner, W., Kouvelas, I., Thyagarajan,
        A., ?Internet Group Management Protocol, Version 3?, <draft-
        ietf-idmr-igmp>, May 2002.


10. Full Copyright Statement

   Copyright (C) The Internet Society (2000). All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph
   are included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other

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                Internet Group Management Protocol MIB

   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet languages other than English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."