Internet DRAFT - draft-mcwalter-ip-mcast-mib
draft-mcwalter-ip-mcast-mib
IETF D. McWalter
Internet-Draft Data Connection Ltd
Expires: June 19, 2006 D. Thaler
Microsoft Corporation
A. Kessler
Cisco Systems
December 16, 2005
IP Multicast MIB
draft-mcwalter-ip-mcast-mib-01.txt
Status of this Memo
By submitting this Internet-Draft, each author represents that any
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have been or will be disclosed, and any of which he or she becomes
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The list of current Internet-Drafts can be accessed at
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This Internet-Draft will expire on June 19, 2006.
Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes objects used for managing multicast
function, independent of the specific multicast protocol(s) in use.
This document obsoletes RFC 2932.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. History . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. The Internet-Standard Management Framework . . . . . . . . . . 3
4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4
6. Security Considerations . . . . . . . . . . . . . . . . . . . 36
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 40
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 40
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.1 Normative References . . . . . . . . . . . . . . . . . . . 40
9.2 Informative References . . . . . . . . . . . . . . . . . . 41
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 42
Intellectual Property and Copyright Statements . . . . . . . . 43
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1. Introduction
This MIB describes objects used for managing IP multicast function,
including IP multicast routing. These objects are independent of the
specific multicast routing protocol in use. Managed objects specific
to particular multicast protocols are defined elsewhere.
2. History
This document obsoletes [RFC2932]. The MIB module defined by this
document is a re-working of the MIB module from [RFC2932], with
changes that include the following.
o This MIB module is independent of address type, whereas [RFC2932]
only supported IPv4.
o This MIB module allows several multicast protocols to perform
routing on a single interface, where [RFC2932] assumed each
interface supported at most one multicast routing protocol.
o This MIB module includes objects that are not specific to
multicast routing. It allows management of multicast function on
systems that do not perform routing, whereas RFC 2932 was
restricted to multicast routing.
o This MIB module includes a table of Source-Specific Multicast
(SSM) address ranges to which SSM semantics [RFC3569] should be
applied.
o This MIB module includes a table of local applications that are
receiving multicast data.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
3. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
[RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
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[RFC2578], STD 58, [RFC2579] and STD 58, [RFC2580].
4. Overview
This MIB module contains two scalars and seven tables. The tables
are:
1. The IP Multicast Interface Table containing multicast information
specific to interfaces.
2. The IP Multicast SSM Range Table, which contains one row per
range of multicast group addresses to which Source-Specific
Multicast semantics [RFC3569] should be applied.
3. The IP Multicast Route Table containing multicast routing
information for IP datagrams sent by particular sources to the IP
multicast groups known to a system.
4. The IP Multicast Routing Next Hop Table containing information on
next-hops for the routing of IP multicast datagrams. Each entry
is one of a list of next-hops on outgoing interfaces for
particular sources sending to a particular multicast group
address.
5. The IP Multicast Scope Boundary Table containing the boundaries
configured for multicast scopes [RFC2365].
6. The IP Multicast Scope Name Table containing human-readable names
of multicast scope.
7. The IP Multicast Local Listener Table containing identifiers for
local applications that are receiving multicast data.
This MIB module uses textual conventions defined in the IF-MIB
[RFC2863], the INET-ADDRESS-MIB [RFC4001] and the IANA-RTPROTO-MIB.
5. Definitions
IPMCAST-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, mib-2,
Integer32, Counter32, Counter64, Gauge32,
TimeTicks FROM SNMPv2-SMI
RowStatus, TEXTUAL-CONVENTION,
TruthValue FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF
SnmpAdminString FROM SNMP-FRAMEWORK-MIB
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InterfaceIndexOrZero,
InterfaceIndex FROM IF-MIB
IANAipRouteProtocol,
IANAipMRouteProtocol FROM IANA-RTPROTO-MIB
InetAddress, InetAddressType,
InetAddressPrefixLength FROM INET-ADDRESS-MIB;
ipMcastMIB MODULE-IDENTITY
LAST-UPDATED "200512160000Z" -- 16 December 2005
ORGANIZATION "IETF MBONED Working Group"
CONTACT-INFO "David McWalter
Data Connection Limited
100 Church Street
Enfield, EN2 6BQ
UK
Phone: +44 208 366 1177
EMail: dmcw@dataconnection.com
Dave Thaler
Microsoft Corporation
One Microsoft Way
Redmond, WA 98052-6399
US
Phone: +1 425 703 8835
EMail: dthaler@dthaler.microsoft.com
Andrew Kessler
Cisco Systems
425 E. Tasman Drive
San Jose, CA 95134
US
Phone: +1 408 526 5139
EMail: kessler@cisco.com"
DESCRIPTION
"The MIB module for management of IP Multicast function.
Copyright (C) The Internet Society (2005). This version of
this MIB module is part of RFC yyyy; see the RFC itself for
full legal notices."
-- RFC Ed.: replace yyyy with actual RFC number & remove this note
REVISION "200512160000Z" -- 16 December 2005
DESCRIPTION "Initial version, published as RFC yyyy."
-- RFC Ed.: replace yyyy with actual RFC number & remove this note
::= { mib-2 XXX }
-- RFC Ed.: replace XXX with IANA-assigned number & remove this note
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--
-- Textual conventions
--
LanguageTag ::= TEXTUAL-CONVENTION
DISPLAY-HINT "100a"
STATUS current
DESCRIPTION
"A language tag with all alphabetic characters converted to
lowercase. This restriction is intended to make the lexical
ordering imposed by SNMP useful when applied to language
tags. Note that it is theoretically possible for a valid
language tag to exceed the allowed length of this syntax,
and thus be impossible to represent with this syntax.
Sampling of language tags in current use on the Internet
suggests that this limit does not pose a serious problem in
practice."
REFERENCE "RFC 1766"
SYNTAX OCTET STRING (SIZE (1..100))
--
-- Top-level structure of the MIB
--
ipMcastMIBObjects OBJECT IDENTIFIER ::= { ipMcastMIB 1 }
ipMcast OBJECT IDENTIFIER ::= { ipMcastMIBObjects 1 }
ipMcastEnable OBJECT-TYPE
SYNTAX INTEGER { enabled(1), disabled(2) }
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The enabled status of IP Multicast function on this
system."
::= { ipMcast 1 }
ipMcastRouteEntryCount OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of rows in the ipMcastRouteTable. This can be
used to check for multicast routing activity, and to monitor
the multicast routing table size."
::= { ipMcast 7 }
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--
-- The Multicast Interface Table
--
ipMcastInterfaceTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table used to manage the multicast
protocol active on an interface."
::= { ipMcast 4 }
ipMcastInterfaceEntry OBJECT-TYPE
SYNTAX IpMcastInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) containing the multicast protocol
information for a particular interface. This entry is
preserved on agent restart."
INDEX { ipMcastInterfaceIfIndex }
::= { ipMcastInterfaceTable 1 }
IpMcastInterfaceEntry ::= SEQUENCE {
ipMcastInterfaceIfIndex InterfaceIndex,
ipMcastInterfaceTtl Integer32,
ipMcastInterfaceProtocol IANAipMRouteProtocol,
ipMcastInterfaceRateLimit Integer32,
ipMcastInterfaceInMcastOctets Counter32,
ipMcastInterfaceOutMcastOctets Counter32,
ipMcastInterfaceInMcastPkts Counter32,
ipMcastInterfaceOutMcastPkts Counter32,
ipMcastInterfaceHCInMcastOctets Counter64,
ipMcastInterfaceHCOutMcastOctets Counter64,
ipMcastInterfaceHCInMcastPkts Counter64,
ipMcastInterfaceHCOutMcastPkts Counter64
}
ipMcastInterfaceIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ifIndex value of the interface for which this entry
contains information."
::= { ipMcastInterfaceEntry 1 }
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ipMcastInterfaceTtl OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The datagram TTL threshold for the interface. Any IP
multicast datagrams with a TTL (IPv4) or Hop Count (IPv6)
less than this threshold will not be forwarded out the
interface. The default value of 0 means all multicast
packets are forwarded out the interface."
DEFVAL { 0 }
::= { ipMcastInterfaceEntry 2 }
ipMcastInterfaceProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"The multicast protocol running on this interface.
More than one multicast protocol can be used on an
interface, so this object is ambiguous. Use of this
object is deprecated."
::= { ipMcastInterfaceEntry 3 }
ipMcastInterfaceRateLimit OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The rate-limit, in kilobits per second, of forwarded
multicast traffic on the interface. A rate-limit of 0
indicates that no rate limiting is done."
DEFVAL { 0 }
::= { ipMcastInterfaceEntry 4 }
ipMcastInterfaceInMcastOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have arrived
on the interface, including framing characters. This object
is similar to ifInOctets in the Interfaces MIB, except that
only multicast packets are counted."
::= { ipMcastInterfaceEntry 5 }
ipMcastInterfaceOutMcastOctets OBJECT-TYPE
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have been
sent on the interface."
::= { ipMcastInterfaceEntry 6 }
ipMcastInterfaceInMcastPkts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of multicast packets that have arrived on the
interface. In many cases, this object is identical to
ifInMulticastPkts in the Interfaces MIB.
However, some implementations use ifXTable for Layer 2
traffic statistics and ipMcastInterfaceTable at Layer 3. In
this case a difference between these objects probably
indicates that some Layer 3 multicast packets are being
transmitted as unicast at Layer 2."
REFERENCE "RFC 2863 ifInMulticastPkts"
::= { ipMcastInterfaceEntry 7 }
ipMcastInterfaceOutMcastPkts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of multicast packets that have been sent on the
interface. In many cases, this object is identical to
ifOutMulticastPkts in the Interfaces MIB.
However, some implementations use ifXTable for Layer 2
traffic statistics and ipMcastInterfaceTable at Layer 3. In
this case a difference between these objects probably
indicates that some Layer 3 multicast packets are being
transmitted as unicast at Layer 2."
REFERENCE "RFC 2863 ifOutMulticastPkts"
::= { ipMcastInterfaceEntry 8 }
ipMcastInterfaceHCInMcastOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have arrived
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on the interface, including framing characters. This object
is a 64-bit version of ipMcastRouteInterfaceInMcastOctets.
It is similar to ifHCInOctets in the Interfaces MIB, except
that only multicast packets are counted."
::= { ipMcastInterfaceEntry 9 }
ipMcastInterfaceHCOutMcastOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have been
sent on the interface. This object is a 64-bit version of
ipMcastRouteInterfaceOutMcastOctets."
::= { ipMcastInterfaceEntry 10 }
ipMcastInterfaceHCInMcastPkts OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of multicast packets that have arrived on the
interface. In many cases, this object is identical to
ifHCInMulticastPkts in the Interfaces MIB.
However, some implementations use ifXTable for Layer 2
traffic statistics and ipMcastInterfaceTable at Layer 3. In
this case a difference between these objects probably
indicates that some Layer 3 multicast packets are being
transmitted as unicast at Layer 2."
REFERENCE "RFC 2863 ifHCInMulticastPkts"
::= { ipMcastInterfaceEntry 11 }
ipMcastInterfaceHCOutMcastPkts OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of multicast packets that have been sent on the
interface. In many cases, this object is identical to
ifHCOutMulticastPkts in the Interfaces MIB.
However, some implementations use ifXTable for Layer 2
traffic statistics and ipMcastInterfaceTable at Layer 3. In
this case a difference between these objects probably
indicates that some Layer 3 multicast packets are being
transmitted as unicast at Layer 2."
REFERENCE "RFC 2863 ifHCOutMulticastPkts"
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::= { ipMcastInterfaceEntry 12 }
--
-- The SSM Range Table
--
ipMcastSsmRangeTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastSsmRangeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is used to create and manage the range(s) of
group addresses to which SSM semantics should be applied."
REFERENCE "RFC 3569"
::= { ipMcast 8 }
ipMcastSsmRangeEntry OBJECT-TYPE
SYNTAX IpMcastSsmRangeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the ssmRangeTable. This entry
is preserved on agent restart."
INDEX { ipMcastSsmRangeAddressType,
ipMcastSsmRangeAddress,
ipMcastSsmRangePrefixLength }
::= { ipMcastSsmRangeTable 1 }
IpMcastSsmRangeEntry ::= SEQUENCE {
ipMcastSsmRangeAddressType InetAddressType,
ipMcastSsmRangeAddress InetAddress,
ipMcastSsmRangePrefixLength InetAddressPrefixLength,
ipMcastSsmRangeRowStatus RowStatus
}
ipMcastSsmRangeAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The address type of the multicast group prefix."
::= { ipMcastSsmRangeEntry 1 }
ipMcastSsmRangeAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"The multicast group address which, when combined with
ipMcastSsmRangePrefixLength, gives the group prefix for this
SSM range. The InetAddressType is given by the
ipMcastSsmRangeAddressType object.
This address object is only significant up to
ipMcastSsmRangePrefixLength bits. The remainder of the
address bits are zero. This is especially important for
this index field, which is part of the index of this entry.
Any non-zero bits would signify an entirely different
entry.
For IPv6 SSM address ranges, only ranges within the space
FF3x::/32 are permitted (where 'x' is any valid scope).
To configure non-global scope SSM range entries within a
zone, consistent ipMcastBoundaryTable entries are required
on routers at the zone boundary."
REFERENCE "RFC 2373 section 2.7 and RFC 3306 section 6"
::= { ipMcastSsmRangeEntry 2 }
ipMcastSsmRangePrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The multicast group prefix length, which, when combined
with ipMcastSsmRangeAddress, gives the group prefix for this
SSM range. The InetAddressType is given by the
ipMcastSsmRangeAddressType object. If
'ipv4' or 'ipv4z', this object must be in the range 4..32.
If ipMcastSsmRangeAddressType is 'ipv6' or 'ipv6z', this
object must be in the range 8..128."
::= { ipMcastSsmRangeEntry 3 }
ipMcastSsmRangeRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which rows in this table can
be created and destroyed. There are no other writeable
columnar objects in this entry."
::= { ipMcastSsmRangeEntry 4 }
--
-- The IP Multicast Routing Table
--
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ipMcastRouteTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastRouteEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table containing multicast routing
information for IP datagrams sent by particular sources to
to the IP multicast groups known to this router."
::= { ipMcast 2 }
ipMcastRouteEntry OBJECT-TYPE
SYNTAX IpMcastRouteEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) containing the multicast routing
information for IP datagrams from a particular source and
addressed to a particular IP multicast group address.
Discontinuities in counters in this entry can be detected by
observing the value of ipMcastRouteUpTime."
INDEX { ipMcastRouteGroupAddressType,
ipMcastRouteGroup,
ipMcastRouteGroupPrefixLength,
ipMcastRouteSourceAddressType,
ipMcastRouteSource,
ipMcastRouteSourcePrefixLength }
::= { ipMcastRouteTable 1 }
IpMcastRouteEntry ::= SEQUENCE {
ipMcastRouteGroupAddressType InetAddressType,
ipMcastRouteGroup InetAddress,
ipMcastRouteGroupPrefixLength InetAddressPrefixLength,
ipMcastRouteSourceAddressType InetAddressType,
ipMcastRouteSource InetAddress,
ipMcastRouteSourcePrefixLength InetAddressPrefixLength,
ipMcastRouteUpstreamNeighborType InetAddressType,
ipMcastRouteUpstreamNeighbor InetAddress,
ipMcastRouteInIfIndex InterfaceIndexOrZero,
ipMcastRouteUpTime TimeTicks,
ipMcastRouteExpiryTime TimeTicks,
ipMcastRoutePkts Counter32,
ipMcastRouteDifferentInIfPackets Counter32,
ipMcastRouteOctets Counter32,
ipMcastRouteProtocol IANAipMRouteProtocol,
ipMcastRouteRtProtocol IANAipRouteProtocol,
ipMcastRouteRtAddressType InetAddressType,
ipMcastRouteRtAddress InetAddress,
ipMcastRouteRtPrefixLength InetAddressPrefixLength,
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ipMcastRouteRtType INTEGER,
ipMcastRouteHCOctets Counter64,
ipMcastRouteDifferentInIfOctets Counter32
}
ipMcastRouteGroupAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteGroup. Legal values correspond to
the subset of address families for which multicast
forwarding is supported."
::= { ipMcastRouteEntry 1 }
ipMcastRouteGroup OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group address which when combined with the
corresponding value specified in
ipMcastRouteGroupPrefixLength identifies the groups for
which this entry contains multicast routing information.
This address object is only significant up to
ipMcastRouteGroupPrefixLength bits. The remainder of the
address bits are zero. This is especially important for
this index field, which is part of the index of this entry.
Any non-zero bits would signify an entirely different
entry."
::= { ipMcastRouteEntry 2 }
ipMcastRouteGroupPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value of ipMcastRouteGroup identifies the
groups for which this entry contains multicast routing
information."
::= { ipMcastRouteEntry 3 }
ipMcastRouteSourceAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
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STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteSource. The value MUST be the same
as the value of ipMcastRouteGroupType."
::= { ipMcastRouteEntry 4 }
ipMcastRouteSource OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The network address which when combined with the
corresponding value of ipMcastRouteSourcePrefixLength
identifies the sources for which this entry contains
multicast routing information.
This address object is only significant up to
ipMcastRouteGroupPrefixLength bits. The remainder of the
address bits are zero. This is especially important for
this index field, which is part of the index of this entry.
Any non-zero bits would signify an entirely different
entry."
::= { ipMcastRouteEntry 5 }
ipMcastRouteSourcePrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value of ipMcastRouteSource identifies the
sources for which this entry contains multicast routing
information."
::= { ipMcastRouteEntry 6 }
ipMcastRouteUpstreamNeighborType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteUpstreamNeighbor. The value MUST
be the same as the value of ipMcastRouteGroupType."
::= { ipMcastRouteEntry 7 }
ipMcastRouteUpstreamNeighbor OBJECT-TYPE
SYNTAX InetAddress
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address of the upstream neighbor (for example, RPF
neighbor) from which IP datagrams from these sources to
this multicast address are received. If the upstream
neighbor is unknown, then ipMcastRouteUpstreamNeighbor
will be 0.0.0.0 in the case of an IPv4 entry, and
0:0:0:0:0:0:0:0 in the case of an IPv6 entry (for example,
in BIDIR-PIM)."
::= { ipMcastRouteEntry 8 }
ipMcastRouteInIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of ifIndex for the interface on which IP
datagrams sent by these sources to this multicast address
are received. A value of 0 indicates that datagrams are not
subject to an incoming interface check, but may be accepted
on multiple interfaces (for example, in BIDIR-PIM)."
::= { ipMcastRouteEntry 9 }
ipMcastRouteUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since the multicast routing information
represented by this entry was learned by the router."
::= { ipMcastRouteEntry 10 }
ipMcastRouteExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry will
be aged out. The value 0 indicates that the entry is not
subject to aging. If ipMcastRouteNextHopState is pruned(1),
this object represents the remaining time until the prune
expires. If this timer expires, state reverts to
forwarding(2). Otherwise, this object represents the time
until this entry is removed from the table."
::= { ipMcastRouteEntry 11 }
ipMcastRoutePkts OBJECT-TYPE
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets routed using this multicast route
entry."
::= { ipMcastRouteEntry 12 }
ipMcastRouteDifferentInIfPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets which this router has received from
these sources and addressed to this multicast group address,
which were dropped because they were not received on the
interface indicated by ipMcastRouteInIfIndex. Packets which
are not subject to an incoming interface check (for example,
using BIDIR-PIM) are not counted.
If this counter increases rapidly, this indicates a problem.
A significant quantity of multicast data is arriving at this
router on unexpected RPF paths (Reverse Path Forwarding
paths; the unicast routes to the expected origin of
multicast data flows), and is not being forwarded.
For guidance, if the rate of increase of this counter
exceeds 1% of the rate of increase of ipMcastRoutePkts, then
there are multicast routing problems that require
investigation."
::= { ipMcastRouteEntry 13 }
ipMcastRouteOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets contained in IP datagrams which were
received from these sources and addressed to this multicast
group address, and which were forwarded by this router."
::= { ipMcastRouteEntry 14 }
ipMcastRouteProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The multicast routing protocol via which this multicast
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forwarding entry was learned."
::= { ipMcastRouteEntry 15 }
ipMcastRouteRtProtocol OBJECT-TYPE
SYNTAX IANAipRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The routing mechanism via which the route used to find the
upstream or parent interface for this multicast forwarding
entry was learned. Inclusion of values for routing
protocols is not intended to imply that those protocols need
be supported."
::= { ipMcastRouteEntry 16 }
ipMcastRouteRtAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteRtAddress. The value MUST be the
same as the value of ipMcastRouteGroupType."
::= { ipMcastRouteEntry 17 }
ipMcastRouteRtAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address portion of the route used to find the upstream
or parent interface for this multicast forwarding entry.
This address object is only significant up to
ipMcastRouteGroupPrefixLength bits. The remainder of the
address bits are zero."
::= { ipMcastRouteEntry 18 }
ipMcastRouteRtPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The length of the mask associated with the route used to
find the upstream or parent interface for this multicast
forwarding entry."
::= { ipMcastRouteEntry 19 }
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ipMcastRouteRtType OBJECT-TYPE
SYNTAX INTEGER {
unicast (1), -- Unicast route used in multicast RIB
multicast (2) -- Multicast route
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The reason the given route was placed in the (logical)
multicast Routing Information Base (RIB). A value of
unicast means that the route would normally be placed only
in the unicast RIB, but was placed in the multicast RIB
(instead or in addition) due to local configuration, such as
when running PIM over RIP. A value of multicast means that
the route was explicitly added to the multicast RIB by the
routing protocol, such as DVMRP or Multiprotocol BGP."
::= { ipMcastRouteEntry 20 }
ipMcastRouteHCOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets contained in IP datagrams which were
received from these sources and addressed to this multicast
group address, and which were forwarded by this router.
This object is a 64-bit version of ipMcastRouteOctets."
::= { ipMcastRouteEntry 21 }
ipMcastRouteDifferentInIfOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets contained in IP datagrams which this
router has received from these sources and addressed to this
multicast group address, which were dropped because they
were not received on the interface indicated by
ipMcastRouteInIfIndex. Octets in IP datagrams which are not
subject to an incoming interface check (for example, using
BIDIR-PIM) are not counted.
If this counter increases rapidly, this indicates a problem.
A significant quantity of multicast data is arriving at this
router on unexpected RPF paths (Reverse Path Forwarding
paths; the unicast routes to the expected origin of
multicast data flows), and is not being forwarded.
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For guidance, if the rate of increase of this counter
exceeds 1% of the rate of increase of ipMcastRouteOctets,
then there are multicast routing problems that require
investigation."
::= { ipMcastRouteEntry 22 }
--
-- The IP Multicast Routing Next Hop Table
--
ipMcastRouteNextHopTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastRouteNextHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table containing information on the
next-hops on outgoing interfaces for routing IP multicast
datagrams. Each entry is one of a list of next-hops on
outgoing interfaces for particular sources sending to a
particular multicast group address."
::= { ipMcast 3 }
ipMcastRouteNextHopEntry OBJECT-TYPE
SYNTAX IpMcastRouteNextHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the list of next-hops on
outgoing interfaces to which IP multicast datagrams from
particular sources to an IP multicast group address are
routed. Discontinuities in counters in this entry can be
detected by observing the value of
ipMcastRouteNextHopUpTime."
INDEX { ipMcastRouteNextHopGroupAddressType,
ipMcastRouteNextHopGroup,
ipMcastRouteNextHopSourceAddressType,
ipMcastRouteNextHopSource,
ipMcastRouteNextHopSourcePrefixLength,
ipMcastRouteNextHopIfIndex,
ipMcastRouteNextHopAddressType,
ipMcastRouteNextHopAddress }
::= { ipMcastRouteNextHopTable 1 }
IpMcastRouteNextHopEntry ::= SEQUENCE {
ipMcastRouteNextHopGroupAddressType InetAddressType,
ipMcastRouteNextHopGroup InetAddress,
ipMcastRouteNextHopSourceAddressType InetAddressType,
ipMcastRouteNextHopSource InetAddress,
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ipMcastRouteNextHopSourcePrefixLength InetAddressPrefixLength,
ipMcastRouteNextHopIfIndex InterfaceIndex,
ipMcastRouteNextHopAddressType InetAddressType,
ipMcastRouteNextHopAddress InetAddress,
ipMcastRouteNextHopState INTEGER,
ipMcastRouteNextHopUpTime TimeTicks,
ipMcastRouteNextHopExpiryTime TimeTicks,
ipMcastRouteNextHopClosestMemberHops Integer32,
ipMcastRouteNextHopProtocol IANAipMRouteProtocol,
ipMcastRouteNextHopPkts Counter32,
ipMcastRouteNextHopOctets Counter32
}
ipMcastRouteNextHopGroupAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteNextHopGroup. Legal values
correspond to the subset of address families for which
multicast forwarding is supported."
::= { ipMcastRouteNextHopEntry 1 }
ipMcastRouteNextHopGroup OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group for which this entry specifies a
next-hop on an outgoing interface."
::= { ipMcastRouteNextHopEntry 2 }
ipMcastRouteNextHopSourceAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteNextHopSource. The value MUST be
the same as the value of ipMcastRouteNextHopGroupType."
::= { ipMcastRouteNextHopEntry 3 }
ipMcastRouteNextHopSource OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"The network address which when combined with the
corresponding value of the mask specified in
ipMcastRouteNextHopSourcePrefixLength identifies the sources
for which this entry specifies a next-hop on an outgoing
interface.
This address object is only significant up to
ipMcastRouteNextHopSourcePrefixLength bits. The remainder
of the address bits are zero. This is especially important
for this index field, which is part of the index of this
entry. Any non-zero bits would signify an entirely
different entry."
::= { ipMcastRouteNextHopEntry 4 }
ipMcastRouteNextHopSourcePrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value specified in ipMcastRouteNextHopSource
identifies the sources for which this entry specifies a
next-hop on an outgoing interface."
::= { ipMcastRouteNextHopEntry 5 }
ipMcastRouteNextHopIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ifIndex value of the interface for the outgoing
interface for this next-hop."
::= { ipMcastRouteNextHopEntry 6 }
ipMcastRouteNextHopAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastRouteNextHopAddress. The value MUST be
the same as the value of ipMcastRouteNextHopGroupType."
::= { ipMcastRouteNextHopEntry 7 }
ipMcastRouteNextHopAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION
"The address of the next-hop specific to this entry. For
most interfaces, this is identical to
ipMcastRouteNextHopGroup. NBMA interfaces, however, may
have multiple next-hop addresses out a single outgoing
interface."
::= { ipMcastRouteNextHopEntry 8 }
ipMcastRouteNextHopState OBJECT-TYPE
SYNTAX INTEGER { pruned(1), forwarding(2) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether the outgoing interface and next-
hop represented by this entry is currently being used to
forward IP datagrams. The value 'forwarding' indicates it
is currently being used; the value 'pruned' indicates it is
not."
::= { ipMcastRouteNextHopEntry 9 }
ipMcastRouteNextHopUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since the multicast routing information
represented by this entry was learned by the router."
::= { ipMcastRouteNextHopEntry 10 }
ipMcastRouteNextHopExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry will
be aged out. If ipMcastRouteNextHopState is pruned(1), the
remaining time until the prune expires and the state reverts
to forwarding(2). Otherwise, the remaining time until this
entry is removed from the table. The time remaining may be
copied from ipMcastRouteExpiryTime if the protocol in use
for this entry does not specify next-hop timers. The value
0 indicates that the entry is not subject to aging."
::= { ipMcastRouteNextHopEntry 11 }
ipMcastRouteNextHopClosestMemberHops OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"The minimum number of hops between this router and any
member of this IP multicast group reached via this next-hop
on this outgoing interface. Any IP multicast datagrams for
the group which have a TTL (IPv4) or Hop Count (IPv6) less
than this number of hops will not be forwarded to this
next-hop.
This is an optimization applied by multicast routing
protocols that explicitly track hop counts to downstream
listeners. Multicast protocols that are not aware of hop
counts to downstream listeners set this object to zero."
::= { ipMcastRouteNextHopEntry 12 }
ipMcastRouteNextHopProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The routing mechanism via which this next-hop was learned."
::= { ipMcastRouteNextHopEntry 13 }
ipMcastRouteNextHopPkts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets which have been forwarded using this
route."
::= { ipMcastRouteNextHopEntry 14 }
ipMcastRouteNextHopOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have been
forwarded using this route."
::= { ipMcastRouteNextHopEntry 15 }
--
-- The IP Multicast Scope Boundary Table
--
ipMcastBoundaryTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastBoundaryEntry
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION
"The (conceptual) table listing the system's scoped
multicast address boundaries."
::= { ipMcast 5 }
ipMcastBoundaryEntry OBJECT-TYPE
SYNTAX IpMcastBoundaryEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the ipMcastBoundaryTable
representing a scoped boundary. This entry is preserved on
agent restart."
INDEX { ipMcastBoundaryIfIndex,
ipMcastBoundaryAddressType,
ipMcastBoundaryAddress,
ipMcastBoundaryAddressPrefixLength }
::= { ipMcastBoundaryTable 1 }
IpMcastBoundaryEntry ::= SEQUENCE {
ipMcastBoundaryIfIndex InterfaceIndex,
ipMcastBoundaryAddressType InetAddressType,
ipMcastBoundaryAddress InetAddress,
ipMcastBoundaryAddressPrefixLength InetAddressPrefixLength,
ipMcastBoundaryStatus RowStatus
}
ipMcastBoundaryIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IfIndex value for the interface to which this boundary
applies. Packets with a destination address in the
associated address/mask range will not be forwarded out this
interface."
::= { ipMcastBoundaryEntry 1 }
ipMcastBoundaryAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastBoundaryAddress. Legal values
correspond to the subset of address families for which
multicast forwarding is supported."
::= { ipMcastBoundaryEntry 2 }
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ipMcastBoundaryAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address which when combined with the
corresponding value of ipMcastBoundaryAddressPrefixLength
identifies the group range for which the scoped boundary
exists. Scoped IPv4 addresses must come from the range
239.x.x.x. Scoped IPv6 addresses must come from range
ff.nn.nn.nn.nn.nn.nn.nn, where nn encodes the scope type and
group identifier.
This address object is only significant up to
ipMcastBoundaryAddressPrefixLength bits. The remainder of
the address bits are zero. This is especially important for
this index field, which is part of the index of this entry.
Any non-zero bits would signify an entirely different
entry."
REFERENCE "RFC 2365, RFC 2373"
::= { ipMcastBoundaryEntry 3 }
ipMcastBoundaryAddressPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value of ipMcastBoundaryAddress identifies the
group range for which the scoped boundary exists."
::= { ipMcastBoundaryEntry 4 }
ipMcastBoundaryStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which rows in this table can
be created and destroyed. There are no other other
writeable columnar objects in this entry."
::= { ipMcastBoundaryEntry 5 }
--
-- The IP Multicast Scope Name Table
--
ipMcastScopeNameTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastScopeNameEntry
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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing multicast scope names."
::= { ipMcast 6 }
ipMcastScopeNameEntry OBJECT-TYPE
SYNTAX IpMcastScopeNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the ipMcastScopeNameTable
representing a multicast scope name. This entry is
preserved on agent restart."
INDEX { ipMcastScopeNameAddressType,
ipMcastScopeNameAddress,
ipMcastScopeNameAddressPrefixLength,
IMPLIED ipMcastScopeNameLanguage }
::= { ipMcastScopeNameTable 1 }
IpMcastScopeNameEntry ::= SEQUENCE {
ipMcastScopeNameAddressType InetAddressType,
ipMcastScopeNameAddress InetAddress,
ipMcastScopeNameAddressPrefixLength InetAddressPrefixLength,
ipMcastScopeNameLanguage LanguageTag,
ipMcastScopeNameString SnmpAdminString,
ipMcastScopeNameDefault TruthValue,
ipMcastScopeNameStatus RowStatus
}
ipMcastScopeNameAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastScopeNameAddress. Legal values
correspond to the subset of address families for which
multicast forwarding is supported."
::= { ipMcastScopeNameEntry 1 }
ipMcastScopeNameAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address which when combined with the
corresponding value of ipMcastScopeNameAddressPrefixLength
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identifies the group range associated with the multicast
scope. Scoped IPv4 addresses must come from the range
239.x.x.x. Scoped IPv6 addresses must come from the range
ff.nn.nn.nn.nn.nn.nn.nn, where nn encodes the scope type and
group identifier.
This address object is only significant up to
ipMcastScopeNameAddressPrefixLength bits. The remainder of
the address bits are zero. This is especially important for
this index field, which is part of the index of this entry.
Any non-zero bits would signify an entirely different
entry."
REFERENCE "RFC 2365, RFC 2373"
::= { ipMcastScopeNameEntry 2 }
ipMcastScopeNameAddressPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value of ipMcastScopeNameAddress identifies
the group range associated with the multicast scope."
::= { ipMcastScopeNameEntry 3 }
ipMcastScopeNameLanguage OBJECT-TYPE
SYNTAX LanguageTag
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Language tag associated with the scope name."
REFERENCE "RFC 1766"
::= { ipMcastScopeNameEntry 4 }
ipMcastScopeNameString OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The textual name associated with the multicast scope. The
value of this object should be suitable for displaying to
end-users, such as when allocating a multicast address in
this scope. When no name is specified, the default value of
this object for IPv4 should be the string 239.x.x.x/y with x
and y replaced appropriately to describe the address and
mask length associated with the scope. Scoped IPv6
addresses must come from range ff.nn.nn.nn.nn.nn.nn.nn,
where nn encodes the scope type and group identifier."
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::= { ipMcastScopeNameEntry 5 }
ipMcastScopeNameDefault OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If true, indicates a preference that the name in the
following language should be used by applications if no name
is available in a desired language."
DEFVAL { false }
::= { ipMcastScopeNameEntry 6 }
ipMcastScopeNameStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which rows in this table can
be created and destroyed. Before the row can be activated,
the object ipMcastScopeNameString must be set to a valid
value. All writeable objects in this entry can be modified
when the status is active(1)."
::= { ipMcastScopeNameEntry 7 }
--
-- The Multicast Listeners Table
--
ipMcastLocalListenerTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMcastLocalListenerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing local applications or
services that have joined multicast groups as listeners.
Entries exist for all addresses in the multicast range for
all applications and services as they are classified on this
device."
::= { ipMcast 9 }
ipMcastLocalListenerEntry OBJECT-TYPE
SYNTAX IpMcastLocalListenerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the LocalListenerTable."
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INDEX { ipMcastLocalListenerGroupAddressType,
ipMcastLocalListenerGroupAddress,
ipMcastLocalListenerSourceAddressType,
ipMcastLocalListenerSourceAddress,
ipMcastLocalListenerSourcePrefixLength,
ipMcastLocalListenerRunIndex }
::= { ipMcastLocalListenerTable 1 }
IpMcastLocalListenerEntry ::= SEQUENCE {
ipMcastLocalListenerGroupAddressType InetAddressType,
ipMcastLocalListenerGroupAddress InetAddress,
ipMcastLocalListenerSourceAddressType InetAddressType,
ipMcastLocalListenerSourceAddress InetAddress,
ipMcastLocalListenerSourcePrefixLength InetAddressPrefixLength,
ipMcastLocalListenerRunIndex Integer32
}
ipMcastLocalListenerGroupAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastLocalListenerGroupAddress. Legal values
correspond to the subset of address families for which
multicast is supported."
::= { ipMcastLocalListenerEntry 1 }
ipMcastLocalListenerGroupAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group for which this entry specifies
locally joined applications or services."
::= { ipMcastLocalListenerEntry 2 }
ipMcastLocalListenerSourceAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value indicating the address family of the address
contained in ipMcastLocalListenerSource. The value MUST be
the same as the value of ipMcastLocalListenerAddressType."
::= { ipMcastLocalListenerEntry 3 }
ipMcastLocalListenerSourceAddress OBJECT-TYPE
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SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The network address which when combined with the
corresponding value of the mask specified in
ipMcastLocalListenerSourcePrefixLength identifies the
sources for which this entry specifies a local listener.
This address object is only significant up to
ipMcastLocalListenerSourcePrefixLength bits. The remainder
of the address bits are zero. This is especially important
for this index field, which is part of the index of this
entry. Any non-zero bits would signify an entirely
different entry."
::= { ipMcastLocalListenerEntry 4 }
ipMcastLocalListenerSourcePrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The length in bits of the mask which when combined with the
corresponding value specified in ipMcastLocalListenerSource
identifies the sources for which this entry specifies a
locally listener. A mask length of zero corresponds to all
sources within the group."
::= { ipMcastLocalListenerEntry 5 }
ipMcastLocalListenerRunIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A unique value corresponding to a piece of software running
on this router or host system. Where possible, this should
be the system's native, unique identification number.
This identifier is platform-specific. It may correspond to
a process ID or application instance number."
REFERENCE "RFC 2287 sysApplRunIndex"
::= { ipMcastLocalListenerEntry 6 }
--
-- Conformance information
--
ipMcastMIBConformance
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OBJECT IDENTIFIER ::= { ipMcastMIB 2 }
ipMcastMIBCompliances
OBJECT IDENTIFIER ::= { ipMcastMIBConformance 1 }
ipMcastMIBGroups OBJECT IDENTIFIER ::= { ipMcastMIBConformance 2 }
--
-- Compliance statements
--
ipMcastMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for the IP Multicast MIB."
MODULE -- this module
MANDATORY-GROUPS { ipMcastMIBBasicGroup}
GROUP ipMcastMIBRouteGroup
DESCRIPTION
"This group is mandatory if the system is a router."
GROUP ipMcastMIBSsmGroup
DESCRIPTION
"This group is mandatory if the system is a router that
supports Source-Specific Multicast. Write access is not
mandatory. IPv6 support is not mandatory."
GROUP ipMcastMIBBoundaryIfGroup
DESCRIPTION
"This group is mandatory if the system is a router that
supports administratively-scoped multicast address
boundaries."
OBJECT ipMcastBoundaryStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
GROUP ipMcastMIBScopeNameGroup
DESCRIPTION
"This group is mandatory if the system is a router that
supports multicast scope names."
OBJECT ipMcastScopeNameStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
GROUP ipMcastMIBHCInterfaceGroup
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DESCRIPTION
"This group is mandatory only for those network interfaces
for which the value of the corresponding instance of ifSpeed
is greater than 20,000,000 bits/second."
GROUP ipMcastMIBRouteProtoGroup
DESCRIPTION
"This group is mandatory if the system is a router."
::= { ipMcastMIBCompliances 1 }
--
-- Units of conformance
--
ipMcastMIBMRouteBasicGroup OBJECT-GROUP
OBJECTS { ipMcastEnable, ipMcastRouteEntryCount,
ipMcastRouteUpstreamNeighborType,
ipMcastRouteUpstreamNeighbor, ipMcastRouteInIfIndex,
ipMcastRouteUpTime, ipMcastRouteExpiryTime,
ipMcastRouteNextHopState,
ipMcastRouteNextHopUpTime,
ipMcastRouteNextHopExpiryTime,
ipMcastRouteNextHopProtocol,
ipMcastRouteNextHopPkts,
ipMcastInterfaceTtl,
ipMcastInterfaceProtocol,
ipMcastInterfaceRateLimit,
ipMcastInterfaceInMcastOctets,
ipMcastInterfaceOutMcastOctets
}
STATUS deprecated
DESCRIPTION
"A collection of objects to support basic management of IP
Multicast routing.
This conformance group is deprecated. It is replaced by
ipMcastMIBBasicGroup and ipMcastMIBRouteGroup"
::= { ipMcastMIBGroups 1 }
ipMcastMIBHopCountGroup OBJECT-GROUP
OBJECTS { ipMcastRouteNextHopClosestMemberHops }
STATUS current
DESCRIPTION
"A collection of objects to support management of the use of
hop counts in IP Multicast routing."
::= { ipMcastMIBGroups 2 }
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ipMcastMIBBoundaryGroup OBJECT-GROUP
OBJECTS { ipMcastBoundaryStatus, ipMcastScopeNameString,
ipMcastScopeNameDefault, ipMcastScopeNameStatus }
STATUS deprecated
DESCRIPTION
"A collection of objects to support management of scoped
multicast address boundaries.
This conformance group is deprecated. It is replaced by
the two conformance groups ipMcastMIBBoundaryIfGroup and
ipMcastMIBScopeNameGroup."
::= { ipMcastMIBGroups 3 }
ipMcastMIBPktsOutGroup OBJECT-GROUP
OBJECTS { ipMcastRouteNextHopPkts }
STATUS current
DESCRIPTION
"A collection of objects to support management of packet
counters for each outgoing interface entry of a route."
::= { ipMcastMIBGroups 4 }
ipMcastMIBHCInterfaceGroup OBJECT-GROUP
OBJECTS { ipMcastInterfaceHCInMcastOctets,
ipMcastInterfaceHCOutMcastOctets,
ipMcastInterfaceHCInMcastPkts,
ipMcastInterfaceHCOutMcastPkts,
ipMcastRouteHCOctets }
STATUS current
DESCRIPTION
"A collection of objects providing information specific to
high speed (greater than 20,000,000 bits/second) network
interfaces."
::= { ipMcastMIBGroups 5 }
ipMcastMIBRouteProtoGroup OBJECT-GROUP
OBJECTS { ipMcastRouteProtocol, ipMcastRouteRtProtocol,
ipMcastRouteRtAddressType, ipMcastRouteRtAddress,
ipMcastRouteRtPrefixLength, ipMcastRouteRtType }
STATUS current
DESCRIPTION
"A collection of objects providing information on the
relationship between multicast routing information, and the
IP Forwarding Table."
::= { ipMcastMIBGroups 6 }
ipMcastMIBPktsGroup OBJECT-GROUP
OBJECTS { ipMcastRoutePkts, ipMcastRouteDifferentInIfPackets,
ipMcastRouteOctets }
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STATUS current
DESCRIPTION
"A collection of objects to support management of packet
counters for each forwarding entry."
::= { ipMcastMIBGroups 7 }
ipMcastMIBBasicGroup OBJECT-GROUP
OBJECTS { ipMcastEnable, ipMcastRouteEntryCount
}
STATUS current
DESCRIPTION
"A collection of objects to support basic management of IP
Multicast protocols."
::= { ipMcastMIBGroups 8 }
ipMcastMIBRouteGroup OBJECT-GROUP
OBJECTS { ipMcastRouteUpstreamNeighborType,
ipMcastRouteUpstreamNeighbor, ipMcastRouteInIfIndex,
ipMcastRouteUpTime, ipMcastRouteExpiryTime,
ipMcastRouteNextHopState,
ipMcastRouteNextHopUpTime,
ipMcastRouteNextHopExpiryTime,
ipMcastRouteNextHopProtocol,
ipMcastRouteNextHopPkts,
ipMcastInterfaceTtl,
ipMcastInterfaceRateLimit,
ipMcastInterfaceInMcastOctets,
ipMcastInterfaceOutMcastOctets
}
STATUS current
DESCRIPTION
"A collection of objects to support basic management of IP
Multicast routing."
::= { ipMcastMIBGroups 9 }
ipMcastMIBSsmGroup OBJECT-GROUP
OBJECTS { ipMcastSsmRangeRowStatus }
STATUS current
DESCRIPTION
"A collection of objects to support management of the use of
Source-Specific Multicast routing."
::= { ipMcastMIBGroups 10 }
ipMcastMIBLocalListenerGroup OBJECT-GROUP
OBJECTS { ipMcastLocalListenerRunIndex }
STATUS current
DESCRIPTION
"A collection of objects to support management of local
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listeners on hosts or routers."
::= { ipMcastMIBGroups 11 }
ipMcastMIBBoundaryIfGroup OBJECT-GROUP
OBJECTS { ipMcastBoundaryStatus }
STATUS current
DESCRIPTION
"A collection of objects to support management of scoped
multicast address boundaries."
::= { ipMcastMIBGroups 12 }
ipMcastMIBScopeNameGroup OBJECT-GROUP
OBJECTS { ipMcastScopeNameString, ipMcastScopeNameDefault,
ipMcastScopeNameStatus }
STATUS current
DESCRIPTION
"A collection of objects to support management of multicast
address scope names."
::= { ipMcastMIBGroups 13 }
ipMcastMIBIfPktsGroup OBJECT-GROUP
OBJECTS { ipMcastInterfaceInMcastPkts,
ipMcastInterfaceOutMcastPkts }
STATUS current
DESCRIPTION
"A collection of objects to support management of packet
counters for each interface entry."
::= { ipMcastMIBGroups 14 }
ipMcastMIBRouteOctetsGroup OBJECT-GROUP
OBJECTS { ipMcastRouteOctets, ipMcastRouteNextHopOctets,
ipMcastRouteDifferentInIfOctets }
STATUS current
DESCRIPTION
"A collection of objects to support management of octet
counters for each forwarding entry."
::= { ipMcastMIBGroups 15 }
END
6. Security Considerations
There are a number of management objects defined in this MIB module
with a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
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network operations. These are the tables and objects and their
sensitivity/vulnerability:
The following tables and objects could be employed to modify
multicast routing behavior in a way that prevents or disrupts
services provided by the network, including (but not limited to)
multicast data traffic delivery.
The following tables and objects may also be used to modify multicast
routing behavior in order to intercept or subvert any information
that is carried by the network. For example, attacks can be
envisaged that would pass nominated multicast data streams through a
nominated location, without the sources or listeners becoming aware
of this subversion.
ipMcastEnable
ipMcastInterfaceTable
ipMcastInterfaceEntry
ipMcastInterfaceIfIndex
ipMcastInterfaceTtl
ipMcastInterfaceProtocol
ipMcastInterfaceRateLimit
ipMcastSsmRangeTable
ipMcastSsmRangeEntry
ipMcastSsmRangeAddressType
ipMcastSsmRangeAddress
ipMcastSsmRangePrefixLength
ipMcastSsmRangeRowStatus
ipMcastBoundaryTable
ipMcastBoundaryEntry
ipMcastBoundaryIfIndex
ipMcastBoundaryAddressType
ipMcastBoundaryAddress
ipMcastBoundaryAddressPrefixLength
ipMcastBoundaryStatus
ipMcastScopeNameTable
ipMcastScopeNameEntry
ipMcastScopeNameAddressType
ipMcastScopeNameAddress
ipMcastScopeNameAddressPrefixLength
ipMcastScopeNameLanguage
ipMcastScopeNameString
ipMcastScopeNameDefault
ipMcastScopeNameStatus
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
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control even GET and/or NOTIFY access to these objects and possibly
to even encrypt the values of these objects when sending them over
the network via SNMP. These are the tables and objects and their
sensitivity/vulnerability:
The following tables and objects could be employed to determine the
topology, disposition, and composition of the network. This
information may be commercially sensitive, and may also be used in
preparation for attacks, including any of the attacks described
above.
The following tables and objects may also be used to determine
whether multicast data is flowing in the network, or has flowed
recently. They may also be used to determine the network location of
senders and recipients. An attacker can apply 'traffic analysis' to
this data. In some cases, the information revealed by traffic
analyses can be as damaging as full knowledge of the data being
transported.
ipMcastRouteEntryCount
ipMcastInterfaceInMcastOctets
ipMcastInterfaceOutMcastOctets
ipMcastInterfaceInMcastPkts
ipMcastInterfaceOutMcastPkts
ipMcastInterfaceHCInMcastOctets
ipMcastInterfaceHCOutMcastOctets
ipMcastInterfaceHCInMcastPkts
ipMcastInterfaceHCOutMcastPkts
ipMcastRouteTable
ipMcastRouteEntry
ipMcastRouteGroupAddressType
ipMcastRouteGroup
ipMcastRouteGroupPrefixLength
ipMcastRouteSourceAddressType
ipMcastRouteSource
ipMcastRouteSourcePrefixLength
ipMcastRouteUpstreamNeighborType
ipMcastRouteUpstreamNeighbor
ipMcastRouteInIfIndex
ipMcastRouteUpTime
ipMcastRouteExpiryTime
ipMcastRoutePkts
ipMcastRouteDifferentInIfPackets
ipMcastRouteOctets
ipMcastRouteProtocol
ipMcastRouteRtProtocol
ipMcastRouteRtAddressType
ipMcastRouteRtAddress
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ipMcastRouteRtPrefixLength
ipMcastRouteRtType
ipMcastRouteHCOctets
ipMcastRouteDifferentInIfOctets
ipMcastRouteNextHopTable
ipMcastRouteNextHopEntry
ipMcastRouteNextHopGroupAddressType
ipMcastRouteNextHopGroup
ipMcastRouteNextHopSourceAddressType
ipMcastRouteNextHopSource
ipMcastRouteNextHopSourcePrefixLength
ipMcastRouteNextHopIfIndex
ipMcastRouteNextHopAddressType
ipMcastRouteNextHopAddress
ipMcastRouteNextHopState
ipMcastRouteNextHopUpTime
ipMcastRouteNextHopExpiryTime
ipMcastRouteNextHopClosestMemberHops
ipMcastRouteNextHopProtocol
ipMcastRouteNextHopPkts
ipMcastRouteNextHopOctets
ipMcastLocalListenerTable
ipMcastLocalListenerEntry
ipMcastLocalListenerGroupAddressType
ipMcastLocalListenerGroupAddress
ipMcastLocalListenerSourceAddressType
ipMcastLocalListenerSourceAddress
ipMcastLocalListenerSourcePrefixLength
ipMcastLocalListenerRunIndex
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPSec),
there is still no control over whom on the secure network is allowed
to access (read/change/create/delete) the objects in this MIB module.
It is RECOMMENDED that implementers consider the security features as
provided by the SNMPv3 framework (see [RFC3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module is properly configured to give access to
the objects only to those principals (users) that have legitimate
rights to access (read/change/create/delete) them.
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7. IANA Considerations
IP-MCAST-MIB should be rooted under the mib-2 subtree. IANA is
requested to assign { mib-2 XXX } to the IP-MCAST-MIB module
specified in this document.
8. Acknowledgements
This MIB module is based on the original work in [RFC2932] by K.
McCloghrie, D. Farinacci and D. Thaler.
Suggested IPv6 multicast MIBs by R. Sivaramu and R. Raghunarayan have
been used for comparison while editing this MIB module.
The authors are also grateful to Bharat Joshi for his input and for
several corrections.
9. References
9.1 Normative References
[RFC1766] Alvestrand, H., "Tags for the Identification of
Languages", RFC 1766, March 1995.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2365] Meyer, D., "Administratively Scoped IP Multicast", BCP 23,
RFC 2365, July 1998.
[RFC2373] Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 2373, July 1998.
[RFC2434] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 2434,
October 1998.
[RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Textual Conventions for SMIv2",
STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Conformance Statements for SMIv2", STD 58, RFC 2580,
April 1999.
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[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC3306] Haberman, B. and D. Thaler, "Unicast-Prefix-based IPv6
Multicast Addresses", RFC 3306, August 2002.
[RFC3569] Bhattacharyya, S., "An Overview of Source-Specific
Multicast (SSM)", RFC 3569, July 2003.
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "Textual Conventions for Internet Network
Addresses", RFC 4001, February 2005.
9.2 Informative References
[RFC1075] Waitzman, D., Partridge, C., and S. Deering, "Distance
Vector Multicast Routing Protocol", RFC 1075,
November 1988.
[RFC1584] Moy, J., "Multicast Extensions to OSPF", RFC 1584,
March 1994.
[RFC2189] Ballardie, T., "Core Based Trees (CBT version 2) Multicast
Routing -- Protocol Specification --", RFC 2189,
September 1997.
[RFC2287] Krupczak, C. and J. Saperia, "Definitions of System-Level
Managed Objects for Applications", RFC 2287,
February 1998.
[RFC2932] McCloghrie, K., Farinacci, D., and D. Thaler, "IPv4
Multicast Routing MIB", RFC 2932, October 2000.
[RFC2934] McCloghrie, K., Farinacci, D., Thaler, D., and B. Fenner,
"Protocol Independent Multicast MIB for IPv4", RFC 2934,
October 2000.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
[I-D.ietf-pim-sm-v2-new]
Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas,
"Protocol Independent Multicast - Sparse Mode PIM-SM):
Protocol Specification (Revised)",
draft-ietf-pim-sm-v2-new-11 (work in progress),
October 2004.
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[I-D.ietf-pim-bidir]
Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
"Bi-directional Protocol Independent Multicast (BIDIR-
PIM)", draft-ietf-pim-bidir-07 (work in progress),
March 2005.
Authors' Addresses
David McWalter
Data Connection Ltd
100 Church Street
Enfield EN2 6BQ
UK
Email: dmcw@dataconnection.com
Dave Thaler
Microsoft Corporation
One Microsoft Way
Redmond WA 98052-6399
USA
Email: dthaler@windows.microsoft.com
Andrew Kessler
Cisco Systems
425 E. Tasman Drive
San Jose CA 95134
USA
Email: kessler@cisco.com
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