IPV6-MLD-MIB DEFINITIONS ::= BEGIN

IMPORTS

    MODULE-IDENTITY, OBJECT-TYPE, Counter32, Gauge32,

    Unsigned32, TimeTicks, mib-2     FROM SNMPv2-SMI

    RowStatus, TruthValue            FROM SNMPv2-TC

    InetAddressIPv6             FROM INET-ADDRESS-MIB

    InterfaceIndex, InterfaceIndexOrZero

                                         FROM IF-MIB

    MODULE-COMPLIANCE, OBJECT-GROUP  FROM SNMPv2-CONF;

mldMIB MODULE-IDENTITY

    LAST-UPDATED "200101250000Z" -- 25 Jan 2001

    ORGANIZATION "IETF IPNGWG Working Group."

    CONTACT-INFO

            " Brian Haberman

              Nortel Networks

              4309 Emperor Blvd.

              Durham, NC  27703

              USA

              Phone: +1 919 992 4439

              e-mail: haberman@nortelnetworks.com"

    DESCRIPTION

            "The MIB module for MLD Management."

    REVISION "200101250000Z" -- 25 Jan 2001

    DESCRIPTION

            "Initial version, published as RFC 3019."

    ::= { mib-2 91 }

mldMIBObjects     OBJECT IDENTIFIER ::= { mldMIB 1 }

--

--  The MLD Interface Table

--

mldInterfaceTable OBJECT-TYPE

    SYNTAX     SEQUENCE OF MldInterfaceEntry

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

             "The (conceptual) table listing the interfaces on which

             MLD is enabled."

    ::= { mldMIBObjects 1 }

mldInterfaceEntry OBJECT-TYPE

    SYNTAX     MldInterfaceEntry

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

            "An entry (conceptual row) representing an interface on

            which MLD is enabled."

    INDEX      { mldInterfaceIfIndex }

    ::= { mldInterfaceTable 1 }

MldInterfaceEntry ::= SEQUENCE {

    mldInterfaceIfIndex               InterfaceIndex,

    mldInterfaceQueryInterval         Unsigned32,

    mldInterfaceStatus                RowStatus,

    mldInterfaceVersion               Unsigned32,

    mldInterfaceQuerier               InetAddressIPv6,

    mldInterfaceQueryMaxResponseDelay Unsigned32,

    mldInterfaceJoins                 Counter32,

    mldInterfaceGroups                Gauge32,

    mldInterfaceRobustness            Unsigned32,

    mldInterfaceLastListenQueryIntvl  Unsigned32,

    mldInterfaceProxyIfIndex          InterfaceIndexOrZero,

    mldInterfaceQuerierUpTime         TimeTicks,

    mldInterfaceQuerierExpiryTime     TimeTicks

}

mldInterfaceIfIndex OBJECT-TYPE

    SYNTAX     InterfaceIndex

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

            "The internetwork-layer interface value of the interface

            for which MLD is enabled."

    ::= { mldInterfaceEntry 1 }

mldInterfaceQueryInterval OBJECT-TYPE

    SYNTAX     Unsigned32

    UNITS      "seconds"

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

            "The frequency at which MLD Host-Query packets are

            transmitted on this interface."

    DEFVAL     { 125 }

    ::= { mldInterfaceEntry 2 }

mldInterfaceStatus OBJECT-TYPE

    SYNTAX     RowStatus

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

             "The activation of a row enables MLD on the interface.

             The destruction of a row disables MLD on the interface."

    ::= { mldInterfaceEntry 3 }

mldInterfaceVersion OBJECT-TYPE

    SYNTAX     Unsigned32

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

             "The version of MLD which is running on this interface.

             This object is a place holder to allow for new versions

             of MLD to be introduced.  Version 1 of MLD is defined

             in RFC 2710."

    DEFVAL     { 1 }

    ::= { mldInterfaceEntry 4 }

mldInterfaceQuerier OBJECT-TYPE

    SYNTAX     InetAddressIPv6 (SIZE (16))

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

             "The address of the MLD Querier on the IPv6 subnet to

             which this interface is attached."

    ::= { mldInterfaceEntry 5 }

mldInterfaceQueryMaxResponseDelay OBJECT-TYPE

    SYNTAX     Unsigned32

    UNITS      "seconds"

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

            "The maximum query response time advertised in MLD

            queries on this interface."

    DEFVAL     { 10 }

    ::= { mldInterfaceEntry 6 }

mldInterfaceJoins 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 MLD activity

            over time."

    ::= { mldInterfaceEntry 7 }

mldInterfaceGroups OBJECT-TYPE

    SYNTAX     Gauge32

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

            "The current number of entries for this interface in the

            Cache Table."

    ::= { mldInterfaceEntry 8 }

mldInterfaceRobustness OBJECT-TYPE

    SYNTAX     Unsigned32

    MAX-ACCESS read-create

    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.  MLD is

            robust to (Robustness Variable-1) packet losses.  The

            discussion of the Robustness Variable is in Section 7.1

            of RFC 2710."

    DEFVAL     { 2 }

    ::= { mldInterfaceEntry 9 }

mldInterfaceLastListenQueryIntvl OBJECT-TYPE

    SYNTAX     Unsigned32

    UNITS      "seconds"

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

             "The Last Member Query Interval is the Max Response

             Delay 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."

    DEFVAL     { 1 }

    ::= { mldInterfaceEntry 10 }

mldInterfaceProxyIfIndex OBJECT-TYPE

    SYNTAX     InterfaceIndexOrZero

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

             "Some devices implement a form of MLD proxying whereby

             memberships learned on the interface represented by this

             row, cause MLD Multicast Listener Reports to be sent on

             the internetwork-layer interface identified by this

             object.  Such a device would implement mldRouterMIBGroup

             only on its router interfaces (those interfaces with

             non-zero mldInterfaceProxyIfIndex).  Typically, the

             value of this object is 0, indicating that no proxying

             is being done."

    DEFVAL     { 0 }

    ::= { mldInterfaceEntry 11 }

mldInterfaceQuerierUpTime OBJECT-TYPE

    SYNTAX     TimeTicks

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

            "The time since mldInterfaceQuerier was last changed."

    ::= { mldInterfaceEntry 12 }

mldInterfaceQuerierExpiryTime OBJECT-TYPE

    SYNTAX     TimeTicks

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

            "The time remaining before the Other Querier Present

            Timer expires.  If the local system is the querier,

            the value of this object is zero."

    ::= { mldInterfaceEntry 13 }

--

--  The MLD Cache Table

--

mldCacheTable OBJECT-TYPE

    SYNTAX     SEQUENCE OF MldCacheEntry

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

             "The (conceptual) table listing the IPv6 multicast

             groups for which there are members on a particular

             interface."

    ::= { mldMIBObjects 2 }

mldCacheEntry OBJECT-TYPE

    SYNTAX     MldCacheEntry

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

            "An entry (conceptual row) in the mldCacheTable."

    INDEX      { mldCacheAddress, mldCacheIfIndex }

    ::= { mldCacheTable 1 }

MldCacheEntry ::= SEQUENCE {

    mldCacheAddress         InetAddressIPv6,

    mldCacheIfIndex            InterfaceIndex,

    mldCacheSelf               TruthValue,

    mldCacheLastReporter   InetAddressIPv6,

    mldCacheUpTime             TimeTicks,

    mldCacheExpiryTime         TimeTicks,

    mldCacheStatus             RowStatus

}

mldCacheAddress OBJECT-TYPE

    SYNTAX     InetAddressIPv6 (SIZE (16))

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

            "The IPv6 multicast group address for which this entry

            contains information."

    ::= { mldCacheEntry 1 }

mldCacheIfIndex OBJECT-TYPE

    SYNTAX     InterfaceIndex

    MAX-ACCESS not-accessible

    STATUS     current

    DESCRIPTION

             "The internetwork-layer interface for which this entry

             contains information for an IPv6 multicast group

             address."

    ::= { mldCacheEntry 2 }

mldCacheSelf 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 }

    ::= { mldCacheEntry 3 }

mldCacheLastReporter OBJECT-TYPE

    SYNTAX     InetAddressIPv6 (SIZE (16))

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

             "The IPv6 address of the source of the last membership

             report received for this IPv6 Multicast group address on

             this interface.  If no membership report has been

             received, this object has the value 0::0."

    ::= { mldCacheEntry 4 }

mldCacheUpTime OBJECT-TYPE

    SYNTAX     TimeTicks

    MAX-ACCESS read-only

    STATUS     current

    DESCRIPTION

            "The time elapsed since this entry was created."

    ::= { mldCacheEntry 5 }

mldCacheExpiryTime 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 mldCacheSelf 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."

    ::= { mldCacheEntry 6 }

mldCacheStatus OBJECT-TYPE

    SYNTAX     RowStatus

    MAX-ACCESS read-create

    STATUS     current

    DESCRIPTION

            "The status of this row, by which new entries may be

            created, or existing entries deleted from this table."

    ::= { mldCacheEntry 7 }

-- conformance information

mldMIBConformance

               OBJECT IDENTIFIER ::= { mldMIB 2 }

mldMIBCompliances

               OBJECT IDENTIFIER ::= { mldMIBConformance 1 }

mldMIBGroups

               OBJECT IDENTIFIER ::= { mldMIBConformance 2 }

-- compliance statements

mldHostMIBCompliance MODULE-COMPLIANCE

    STATUS  current

    DESCRIPTION

            "The compliance statement for hosts running MLD and

            implementing the MLD MIB."

    MODULE  -- this module

    MANDATORY-GROUPS { mldBaseMIBGroup,

                       mldHostMIBGroup

                     }

    OBJECT     mldInterfaceStatus

    MIN-ACCESS read-only

    DESCRIPTION

             "Write access is not required."

    ::= { mldMIBCompliances 1 }

mldRouterMIBCompliance MODULE-COMPLIANCE

    STATUS  current

    DESCRIPTION

            "The compliance statement for routers running MLD and

            implementing the MLD MIB."

    MODULE  -- this module

    MANDATORY-GROUPS { mldBaseMIBGroup,

                       mldRouterMIBGroup

                     }

    OBJECT     mldInterfaceStatus

    MIN-ACCESS read-only

    DESCRIPTION

             "Write access is not required."

    ::= { mldMIBCompliances 2 }

-- units of conformance

mldBaseMIBGroup OBJECT-GROUP

    OBJECTS { mldCacheSelf,

              mldCacheStatus, mldInterfaceStatus

            }

    STATUS  current

    DESCRIPTION

            "The basic collection of objects providing management of

            MLD.  The mldBaseMIBGroup is designed to allow for the

            manager creation and deletion of MLD cache entries."

    ::= { mldMIBGroups 1 }

mldRouterMIBGroup OBJECT-GROUP

    OBJECTS { mldCacheUpTime, mldCacheExpiryTime,

              mldInterfaceQueryInterval,

              mldInterfaceJoins, mldInterfaceGroups,

              mldCacheLastReporter,

              mldInterfaceQuerierUpTime,

              mldInterfaceQuerierExpiryTime,

              mldInterfaceQuerier,

              mldInterfaceVersion,

              mldInterfaceQueryMaxResponseDelay,

              mldInterfaceRobustness,

              mldInterfaceLastListenQueryIntvl

            }

    STATUS  current

    DESCRIPTION

            "A collection of additional objects for management of MLD

            in routers."

    ::= { mldMIBGroups 2 }

mldHostMIBGroup OBJECT-GROUP

    OBJECTS { mldInterfaceQuerier

            }

    STATUS  current

    DESCRIPTION

            "A collection of additional objects for management of MLD

            in hosts."

    ::= { mldMIBGroups 3 }

mldProxyMIBGroup OBJECT-GROUP

    OBJECTS { mldInterfaceProxyIfIndex }

    STATUS  current

    DESCRIPTION

            "A collection of additional objects for management of MLD

            proxy devices."

    ::= { mldMIBGroups 4 }

END