J. Chesterfield,
Editor
U. of Cambridge
Internet Draft Computer Lab
Document:
draft-ietf-magma-mgmd-mib-08.txt
Expires: August 2006 March 2006
Multicast Group Membership Discovery MIB
Status of this Memo
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This Internet-Draft will expire on August 4, 2006.
Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes objects used for managing 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............................................29
6. Contributors...................................................29
7. Acknowledgements...............................................30
8. Author's Address...............................................30
9. References.....................................................31
10. Full Copyright Statement......................................32
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 [4], version 2 [5] or
version 3 [6] and the Multicast Listener Discovery (MLD) protocol
version 1 [7] or version 2 [8]. 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 [9].
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 "200603060000Z" -- Mar 06, 2006
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"
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."
REVISION "200603060000Z" -- Mar 06, 2006
DESCRIPTION
"The initial support for IGMP and MLD MIBs is defined
in RFC 2933 and RFC 3019."
-- RFC Ed.: replace yyyy with actual RFC number & remove this note
::= { mib-2 XXX }
-- RFC Ed. : the IANA is requested to assign a value for "XXX"
-- under the 'mib-2' subtree and to record the assignment in the SMI
-- Numbers registry. When the assignment has been made, the RFC
-- Editor is asked to replace "XXX" (here and in the MIB module)
-- with the assigned value and to remove this note.
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. Dynamically created row
state is non-volatile, and upon agent reboot should be
reinstantiated as a conceptual row. Any change in read-create
objects should therefore be backed up by stable storage."
INDEX { mgmdHostInterfaceIfIndex, mgmdHostInterfaceQuerierType}
::= { mgmdHostInterfaceTable 1 }
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MgmdHostInterfaceEntry ::= SEQUENCE {
mgmdHostInterfaceIfIndex InterfaceIndex,
mgmdHostInterfaceQuerierType InetAddressType,
mgmdHostInterfaceQuerier InetAddress,
mgmdHostInterfaceStatus RowStatus,
mgmdHostInterfaceVersion Unsigned32,
mgmdHostInterfaceVersion1QuerierTimer TimeTicks,
mgmdHostInterfaceVersion2QuerierTimer TimeTicks,
mgmdHostInterfaceVersion3Robustness Unsigned32
}
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
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"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. Creation of a row
is not dependent upon any other read-create object values
being set in advance. Unless objects have already been
created, all row values MUST be set to their corresponding
default entry upon activation of a row."
::= { mgmdHostInterfaceEntry 4 }
mgmdHostInterfaceVersion OBJECT-TYPE
SYNTAX Unsigned32 (1..3)
MAX-ACCESS read-create
STATUS current
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). This object MAY be modified under any
rowstatus condition."
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 }
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::= { mgmdHostInterfaceEntry 7 }
mgmdHostInterfaceVersion3Robustness OBJECT-TYPE
SYNTAX Unsigned32 (1..255)
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. This object MAY be
modified under any rowstatus condition."
DEFVAL { 2 }
::= { 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. Dynamically created row
state is non-volatile, and upon agent reboot should be
reinstantiated as a conceptual row. Any change in read-create
objects should therefore be backed up by stable storage."
INDEX { mgmdRouterInterfaceIfIndex,
mgmdRouterInterfaceQuerierType }
::= { mgmdRouterInterfaceTable 1 }
MgmdRouterInterfaceEntry ::= SEQUENCE {
mgmdRouterInterfaceIfIndex InterfaceIndex,
mgmdRouterInterfaceQuerierType InetAddressType,
mgmdRouterInterfaceQuerier InetAddress,
mgmdRouterInterfaceQueryInterval Unsigned32,
mgmdRouterInterfaceStatus RowStatus,
mgmdRouterInterfaceVersion Unsigned32,
mgmdRouterInterfaceQueryMaxResponseTime Unsigned32,
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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
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 (1..31744)
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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 object MAY be
modified under any rowstatus condition."
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. Creation of a row
is not dependent upon any other read-create object values
being set in advance. Unless objects have already been
created, all row values MUST be set to their corresponding
default entry upon activation of a row."
::= { 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. This object MAY be
modified under any rowstatus condition."
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. This object MAY be
modified under any rowstatus condition."
DEFVAL { 100 }
::= { mgmdRouterInterfaceEntry 7 }
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mgmdRouterInterfaceQuerierUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since mgmdRouterInterfaceQuerier was last
changed."
DEFVAL { 0 }
::= { 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."
DEFVAL { 0 }
::= { mgmdRouterInterfaceEntry 9 }
mgmdRouterInterfaceWrongVersionQueries OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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."
DEFVAL { 0 }
::= { 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."
DEFVAL { 0 }
::= { mgmdRouterInterfaceEntry 11 }
mgmdRouterInterfaceProxyIfIndex OBJECT-TYPE
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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. This object MAY be
modified under any rowstatus condition."
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."
DEFVAL { 0 }
::= { mgmdRouterInterfaceEntry 13 }
mgmdRouterInterfaceRobustness OBJECT-TYPE
SYNTAX Unsigned32 (1..255)
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. IGMP and
MLD is robust to (Robustness Variable-1) packet losses.
This object MAY be modified under any rowstatus condition."
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
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irrelevant if mgmdRouterInterfaceVersion is 1. This object
MAY be modified under any rowstatus condition."
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 }
mgmdRouterInterfaceStartupQueryCount OBJECT-TYPE
SYNTAX Unsigned32 (1..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Represents the number of Queries sent out on startup
separated by the Startup Query Interval."
DEFVAL { 2 }
::= { mgmdRouterInterfaceEntry 17 }
mgmdRouterInterfaceStartupQueryInterval OBJECT-TYPE
SYNTAX Unsigned32 (1..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 { 31 } -- 0.25 * mgmdRouterInterfaceQueryInterval
::= { 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
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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))
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
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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 }
--
-- 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 }
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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
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
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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
DESCRIPTION
"This value is applicable only to MGMDv3 compatible
routers, 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 }
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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 }
--
-- 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 }
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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
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
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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
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
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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
}
mgmdHostSrcListAddressType 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 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 }
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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 }
--
-- The MGMD Router Source list Table
--
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
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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
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 (when non-zero) indicates the time left prior to
the expiration of the SrcList entry. A zero value indicates
a state of EXCLUDE mode and a non-zero value indicates the
entry being in INCLUDE mode."
::= { mgmdRouterSrcListEntry 5 }
-- conformance information
mgmdMIBConformance
OBJECT IDENTIFIER ::= { mgmdStdMIB 2 }
mgmdMIBCompliance OBJECT IDENTIFIER ::= { mgmdMIBConformance 3 }
mgmdMIBGroups OBJECT IDENTIFIER ::= { mgmdMIBConformance 4 }
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-- Protocol Version Conformance
mgmdIgmpV1HostMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The version statement for hosts running IGMPv1, RFC 1112
[4], 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 }
GROUP mgmdHostOptMIBGroup
DESCRIPTION
"Optional group of objects that are useful in networks
where the router does not support the MGMD MIB."
OBJECT mgmdHostInterfaceStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { mgmdMIBCompliance 1 }
mgmdIgmpV1RouterMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The version statement for routers running IGMPv1, RFC 1112
[4], 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
[5], 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 }
GROUP mgmdV2HostOptMIBGroup
DESCRIPTION
"An additional optional object for management of MGMD
version 2 in hosts."
::= { mgmdMIBCompliance 3 }
mgmdIgmpV2RouterMIBCompliance MODULE-COMPLIANCE
STATUS current
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DESCRIPTION
"The version statement for routers running IGMPv2, RFC 2236
[5], 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
}
GROUP mgmdV2RouterOptMIBGroup
DESCRIPTION
"An additional optional object for management of MGMD
version 2 in routers."
GROUP mgmdV2ProxyMIBGroup
DESCRIPTION
"A collection of additional objects for management of MGMD
proxy devices."
OBJECT mgmdRouterInterfaceStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { mgmdMIBCompliance 4 }
mgmdMldV1HostMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The version statement for hosts running MLDv1, RFC 2710
[7], 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 }
GROUP mgmdV2HostOptMIBGroup
DESCRIPTION
"An additional optional object for management of MGMD
version 2 in hosts."
::= { mgmdMIBCompliance 5 }
mgmdMldV1RouterMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The version statement for routers running MLDv1, RFC 2710
[7], 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
}
GROUP mgmdV2RouterOptMIBGroup
DESCRIPTION
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"An additional optional object for management of MGMD
version 2 in routers."
GROUP mgmdV2ProxyMIBGroup
DESCRIPTION
"A collection of additional objects for management of MGMD
proxy devices."
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
[6], 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
[6], 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
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 [8] and
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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 [8] 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
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
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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,
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
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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
}
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,
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
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Multicast Group Membership Discovery MIB
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 [13] 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
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
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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
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,
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Multicast Group Membership Discovery MIB
15 JJ Thompson Avenue,
Cambridge,
CB3 0FD
UK
9. References
9.1 Normative 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] Deering, S., "Host Extensions for IP Multicasting", STD 5, RFC
1112, August 1989.
[5] Fenner, W., "Internet Group Management Protocol, Version 2",
RFC 2236, November 1997.
[6] Cain, B., Deering, S., Fenner, W., Kouvelas, I., Thyagarajan,
A., "Internet Group Management Protocol, Version 3", RFC 3376,
Oct 2002.
[7] Deering, S., Fenner, W., Haberman, B., "Multicast Listener
Discovery for IPv6", RFC 2710, October 1999.
[8] Vida, R., Costa, L., "Multicast Listener Discovery Version 2
(MLDv2) for IPv6", RFC 3810, June 2004.
9.2 Informative References
[9] Case, J., Mundy, R., Partain, D. and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
[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.
[12] Blumenthal, U., Wijnen, B., "User-based Security Model (USM)
for version 3 of the Simple Network Management Protocol
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Multicast Group Membership Discovery MIB
(SNMPv3)", RFC 2574, April 1999.
[13] Wijnen, B., Presuhn, R., McCloghrie, "View-based Access
Control Model (VACM) for the Simple Network Management
Protocol (SNMP)", RFC 2575, April 1999.
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