Network Working Group D. McWalter Request for Comments: 5132 Data Connection Ltd Obsoletes: 2932 D. Thaler Category: Standards Track Microsoft Corporation A. Kessler Cisco Systems December 2007 IP Multicast MIB Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. 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. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 2 2. History . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. The Internet-Standard Management Framework . . . . . . . . . . 2 4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5. IMPORTed MIB Modules and REFERENCE Clauses . . . . . . . . . . 4 6. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4 7. Security Considerations . . . . . . . . . . . . . . . . . . . 54 7.1. SNMPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . 54 7.2. Writeable Objects . . . . . . . . . . . . . . . . . . . . 54 7.3. Readable Objects . . . . . . . . . . . . . . . . . . . . . 55 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 55 9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 55 10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 56 10.1. Normative References . . . . . . . . . . . . . . . . . . . 56 10.2. Informative References . . . . . . . . . . . . . . . . . . 57 McWalter, et al. Standards Track [Page 1]
RFC 5132 IP MCAST MIB December 2007 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. 1.1. Terminology 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]. 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 includes support for IPv6 addressing and the IPv6 scoped address architecture. [RFC2932] supported only 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. Multicast routing protocols are now per-route, see ipMcastRouteProtocol. 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 [RFC2932] 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. o This MIB module includes a table of multicast scope zones. 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]. McWalter, et al. Standards Track [Page 2]
RFC 5132 IP MCAST MIB December 2007 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, ([RFC2578], [RFC2579] and [RFC2580]). 4. Overview This MIB module contains two scalars and eight tables. The tables are: 1. The IP Multicast Interface Table, which contains 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, which contains 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, which contains information about 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, which contains the boundaries configured for multicast scopes [RFC2365]. 6. The IP Multicast Scope Name Table, which contains human-readable names for multicast scopes. 7. The IP Multicast Local Listener Table, which contains identifiers for local applications that are receiving multicast data. 8. The IP Multicast Zone Table, which contains an entry for each scope zone known to a system, and maps each zone to the multicast address range that is the corresponding scope. This MIB module uses textual conventions defined in the IF-MIB [RFC2863], the INET-ADDRESS-MIB [RFC4001] and the IANA-RTPROTO-MIB. McWalter, et al. Standards Track [Page 3]
RFC 5132 IP MCAST MIB December 2007 5. IMPORTed MIB Modules and REFERENCE Clauses The MIB modules defined in this document IMPORTs definitions normatively from the following MIB modules, beyond [RFC2578], [RFC2579], and [RFC2580]: HCNUM-TC [RFC2856], IF-MIB [RFC2863], IANA- RTPROTO-MIB, SNMP-FRAMEWORK-MIB [RFC3411], INET-ADDRESS-MIB [RFC4001], and LANGTAG-TC-MIB [RFC5131]. This MIB module also includes REFERENCE clauses that make normative references to Administratively Scoped IP Multicast [RFC2365], Unicast-Prefix-based IPv6 Multicast Addresses [RFC3306], IPv6 Scoped Address Architecture [RFC4007], and IPv6 Addressing Architecture [RFC4291]. Finally, this MIB module makes informative references to several RFCs in the text of DESCRIPTION clauses, including sysApplMIB [RFC2287], IP-MIB [RFC4293], Source-Specific Multicast [RFC3569], Protocol Independent Multicast-Sparse Mode version 2 (PIM-SMv2) Protocol Specification [RFC4601], Bidirectional Protocol Independent Multicast (BIDIR-PIM) [RFC5015], and Tags for Identifying Languages [RFC4646]. 6. Definitions IPMCAST-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, mib-2, Unsigned32, Counter64, Gauge32, TimeTicks FROM SNMPv2-SMI -- [RFC2578] RowStatus, TruthValue, StorageType, TimeStamp FROM SNMPv2-TC -- [RFC2579] MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- [RFC2580] CounterBasedGauge64 FROM HCNUM-TC -- [RFC2856] InterfaceIndexOrZero, InterfaceIndex FROM IF-MIB -- [RFC2863] IANAipRouteProtocol, IANAipMRouteProtocol FROM IANA-RTPROTO-MIB SnmpAdminString FROM SNMP-FRAMEWORK-MIB -- [RFC3411] InetAddress, InetAddressType, InetAddressPrefixLength, InetZoneIndex, InetVersion FROM INET-ADDRESS-MIB -- [RFC4001] LangTag FROM LANGTAG-TC-MIB; -- [RFC5131] ipMcastMIB MODULE-IDENTITY LAST-UPDATED "200711090000Z" -- 9 November 2007 ORGANIZATION "IETF MBONE Deployment (MBONED) Working Group" CONTACT-INFO "David McWalter Data Connection Limited McWalter, et al. Standards Track [Page 4]
RFC 5132 IP MCAST MIB December 2007 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, including multicast routing, data forwarding, and data reception. Copyright (C) The IETF Trust (2007). This version of this MIB module is part of RFC 5132; see the RFC itself for full legal notices." REVISION "200711090000Z" -- 9 November 2007 DESCRIPTION "Initial version, published as RFC 5132. This MIB module obsoletes IPMROUTE-STD-MIB defined by [RFC2932]. Changes include the following: o This MIB module includes support for IPv6 addressing and the IPv6 scoped address architecture. [RFC2932] supported only 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. Multicast routing protocols are now per-route, see ipMcastRouteProtocol. McWalter, et al. Standards Track [Page 5]
RFC 5132 IP MCAST MIB December 2007 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 [RFC2932] 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. o This MIB module includes a table of multicast scope zones." ::= { mib-2 168 } -- -- Top-level structure of the MIB -- ipMcast OBJECT IDENTIFIER ::= { ipMcastMIB 1 } ipMcastEnabled OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-write STATUS current DESCRIPTION "The enabled status of IP Multicast function on this system. The storage type of this object is determined by ipMcastDeviceConfigStorageType." ::= { 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 2 } ipMcastDeviceConfigStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-write McWalter, et al. Standards Track [Page 6]
RFC 5132 IP MCAST MIB December 2007 STATUS current DESCRIPTION "The storage type used for the global IP multicast configuration of this device, comprised of the objects listed below. If this storage type takes the value 'permanent', write-access to the listed objects need not be allowed. The objects described by this storage type are: ipMcastEnabled." DEFVAL { nonVolatile } ::= { ipMcast 11 } -- -- 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 3 } 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. Per-interface multicast forwarding statistics are also available in ipIfStatsTable." REFERENCE "RFC 4293 ipIfStatsTable" INDEX { ipMcastInterfaceIPVersion, ipMcastInterfaceIfIndex } ::= { ipMcastInterfaceTable 1 } IpMcastInterfaceEntry ::= SEQUENCE { ipMcastInterfaceIPVersion InetVersion, ipMcastInterfaceIfIndex InterfaceIndex, ipMcastInterfaceTtl Unsigned32, ipMcastInterfaceRateLimit Unsigned32, ipMcastInterfaceStorageType StorageType } McWalter, et al. Standards Track [Page 7]
RFC 5132 IP MCAST MIB December 2007 ipMcastInterfaceIPVersion OBJECT-TYPE SYNTAX InetVersion MAX-ACCESS not-accessible STATUS current DESCRIPTION "The IP version of this row." ::= { ipMcastInterfaceEntry 1 } ipMcastInterfaceIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "The index value that uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of the IF-MIB's ifIndex." ::= { ipMcastInterfaceEntry 2 } ipMcastInterfaceTtl OBJECT-TYPE SYNTAX Unsigned32 (0..256) MAX-ACCESS read-write STATUS current DESCRIPTION "The datagram Time to Live (TTL) threshold for the interface. Any IP multicast datagrams with a TTL (IPv4) or Hop Limit (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. A value of 256 means that no multicast packets are forwarded out the interface." DEFVAL { 0 } ::= { ipMcastInterfaceEntry 3 } ipMcastInterfaceRateLimit OBJECT-TYPE SYNTAX Unsigned32 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 } ipMcastInterfaceStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-write McWalter, et al. Standards Track [Page 8]
RFC 5132 IP MCAST MIB December 2007 STATUS current DESCRIPTION "The storage type for this row. Rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { nonVolatile } ::= { ipMcastInterfaceEntry 5 } -- -- 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 4 } ipMcastSsmRangeEntry OBJECT-TYPE SYNTAX IpMcastSsmRangeEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry (conceptual row) containing a range of group addresses to which SSM semantics should be applied. Object Identifiers (OIDs) are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." REFERENCE "RFC 3569" INDEX { ipMcastSsmRangeAddressType, ipMcastSsmRangeAddress, ipMcastSsmRangePrefixLength } ::= { ipMcastSsmRangeTable 1 } IpMcastSsmRangeEntry ::= SEQUENCE { ipMcastSsmRangeAddressType InetAddressType, ipMcastSsmRangeAddress InetAddress, ipMcastSsmRangePrefixLength InetAddressPrefixLength, ipMcastSsmRangeRowStatus RowStatus, ipMcastSsmRangeStorageType StorageType } McWalter, et al. Standards Track [Page 9]
RFC 5132 IP MCAST MIB December 2007 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 MAX-ACCESS not-accessible STATUS current DESCRIPTION "The multicast group address which, when combined with ipMcastSsmRangePrefixLength, gives the group prefix for this SSM range. The InetAddressType is given by ipMcastSsmRangeAddressType. This address object is only significant up to ipMcastSsmRangePrefixLength bits. The remaining address bits are set to 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 prefixed by FF3x::/16 are permitted, where 'x' is a valid IPv6 RFC 4291 multicast address scope. The syntax of the address range is given by RFC 3306, Sections 4 and 7. For addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this SSM range entry applies only within the given zone. Zone index zero is not valid in this table. If non-global scope SSM range entries are present, then consistent ipMcastBoundaryTable entries are required on routers at the zone boundary." REFERENCE "RFC 2365, RFC 4291 Section 2.7, RFC 3306 Sections 4, 6, and 7" ::= { ipMcastSsmRangeEntry 2 } ipMcastSsmRangePrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS not-accessible STATUS current DESCRIPTION "The length in bits of the mask which, when combined with McWalter, et al. Standards Track [Page 10]
RFC 5132 IP MCAST MIB December 2007 ipMcastSsmRangeAddress, gives the group prefix for this SSM range. The InetAddressType is given by ipMcastSsmRangeAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." REFERENCE "RFC 2365, RFC 4291 Section 2.7, RFC 3306 Sections 4, 6, and 7" ::= { 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. This status object can be set to active(1) without setting any other columnar objects in this entry. All writeable objects in this entry can be modified when the status of this entry is active(1)." ::= { ipMcastSsmRangeEntry 4 } ipMcastSsmRangeStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { nonVolatile } ::= { ipMcastSsmRangeEntry 5 } -- -- The IP Multicast Routing Table -- 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 McWalter, et al. Standards Track [Page 11]
RFC 5132 IP MCAST MIB December 2007 to the IP multicast groups known to this router." ::= { ipMcast 5 } 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. OIDs are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." 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, ipMcastRouteTimeStamp TimeStamp, ipMcastRouteExpiryTime TimeTicks, ipMcastRouteProtocol IANAipMRouteProtocol, ipMcastRouteRtProtocol IANAipRouteProtocol, ipMcastRouteRtAddressType InetAddressType, ipMcastRouteRtAddress InetAddress, ipMcastRouteRtPrefixLength InetAddressPrefixLength, ipMcastRouteRtType INTEGER, ipMcastRouteOctets Counter64, ipMcastRoutePkts Counter64, ipMcastRouteTtlDropOctets Counter64, ipMcastRouteTtlDropPackets Counter64, ipMcastRouteDifferentInIfOctets Counter64, ipMcastRouteDifferentInIfPackets Counter64, McWalter, et al. Standards Track [Page 12]
RFC 5132 IP MCAST MIB December 2007 ipMcastRouteBps CounterBasedGauge64 } 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 remaining address bits are set to 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 addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this forwarding state applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastRouteEntry 2 } ipMcastRouteGroupPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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. The InetAddressType is given by McWalter, et al. Standards Track [Page 13]
RFC 5132 IP MCAST MIB December 2007 ipMcastRouteGroupAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." ::= { ipMcastRouteEntry 3 } ipMcastRouteSourceAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value indicating the address family of the address contained in ipMcastRouteSource. A value of unknown(0) indicates a non-source-specific entry, corresponding to all sources in the group. Otherwise, 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 ipMcastRouteSourcePrefixLength bits. The remaining address bits are set to 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 addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this source address applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastRouteEntry 5 } ipMcastRouteSourcePrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS not-accessible STATUS current DESCRIPTION McWalter, et al. Standards Track [Page 14]
RFC 5132 IP MCAST MIB December 2007 "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. The InetAddressType is given by ipMcastRouteSourceAddressType. For the value 'unknown', this object must be zero. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." ::= { 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. An address type of unknown(0) indicates that the upstream neighbor is unknown, for example in BIDIR-PIM." REFERENCE "RFC 5015" ::= { ipMcastRouteEntry 7 } ipMcastRouteUpstreamNeighbor OBJECT-TYPE SYNTAX InetAddress 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." ::= { 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)." REFERENCE "RFC 5015" ::= { ipMcastRouteEntry 9 } McWalter, et al. Standards Track [Page 15]
RFC 5132 IP MCAST MIB December 2007 ipMcastRouteTimeStamp OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at which the multicast routing information represented by this entry was learned by the router. If this information was present at the most recent re- initialization of the local management subsystem, then this object contains a zero value." ::= { 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 } ipMcastRouteProtocol OBJECT-TYPE SYNTAX IANAipMRouteProtocol MAX-ACCESS read-only STATUS current DESCRIPTION "The multicast routing protocol via which this multicast forwarding entry was learned." ::= { ipMcastRouteEntry 12 } 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." ::= { ipMcastRouteEntry 13 } ipMcastRouteRtAddressType OBJECT-TYPE McWalter, et al. Standards Track [Page 16]
RFC 5132 IP MCAST MIB December 2007 SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "A value indicating the address family of the address contained in ipMcastRouteRtAddress." ::= { ipMcastRouteEntry 14 } 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 ipMcastRouteRtPrefixLength bits. The remaining address bits are set to zero. For addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this forwarding state applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastRouteEntry 15 } ipMcastRouteRtPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS read-only STATUS current DESCRIPTION "The length in bits of the mask associated with the route used to find the upstream or parent interface for this multicast forwarding entry. The InetAddressType is given by ipMcastRouteRtAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." ::= { ipMcastRouteEntry 16 } ipMcastRouteRtType OBJECT-TYPE SYNTAX INTEGER { unicast (1), -- Unicast route used in multicast RIB multicast (2) -- Multicast route } MAX-ACCESS read-only McWalter, et al. Standards Track [Page 17]
RFC 5132 IP MCAST MIB December 2007 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 due (instead or in addition) 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 the Distance Vector Multicast Routing Protocol (DVMRP) or Multiprotocol BGP." ::= { ipMcastRouteEntry 17 } ipMcastRouteOctets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of octets contained in IP datagrams that were received from these sources and addressed to this multicast group address, and which were forwarded by this router. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." ::= { ipMcastRouteEntry 18 } ipMcastRoutePkts OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets routed using this multicast route entry. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." ::= { ipMcastRouteEntry 19 } ipMcastRouteTtlDropOctets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current McWalter, et al. Standards Track [Page 18]
RFC 5132 IP MCAST MIB December 2007 DESCRIPTION "The number of octets contained in IP datagrams that this router has received from these sources and addressed to this multicast group address, which were dropped because the TTL (IPv4) or Hop Limit (IPv6) was decremented to zero, or to a value less than ipMcastInterfaceTtl for all next hops. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." ::= { ipMcastRouteEntry 20 } ipMcastRouteTtlDropPackets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets that this router has received from these sources and addressed to this multicast group address, which were dropped because the TTL (IPv4) or Hop Limit (IPv6) was decremented to zero, or to a value less than ipMcastInterfaceTtl for all next hops. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." ::= { ipMcastRouteEntry 21 } ipMcastRouteDifferentInIfOctets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of octets contained in IP datagrams that this router has received from these sources and addressed to this multicast group address, which were dropped because they were received on an unexpected interface. For RPF checking protocols (such as PIM-SM), these packets arrived on interfaces other than ipMcastRouteInIfIndex, and were dropped because of this failed RPF check. (RPF paths are 'Reverse Path Forwarding' paths; the unicast routes to the expected origin of multicast data flows). McWalter, et al. Standards Track [Page 19]
RFC 5132 IP MCAST MIB December 2007 Other protocols may drop packets on an incoming interface check for different reasons (for example, BIDIR-PIM performs a DF check on receipt of packets). All packets dropped as a result of an incoming interface check are counted here. If this counter increases rapidly, this indicates a problem. A significant quantity of multicast data is arriving at this router on unexpected interfaces, and is not being forwarded. 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. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." REFERENCE "RFC 4601 and RFC 5015" ::= { ipMcastRouteEntry 22 } ipMcastRouteDifferentInIfPackets OBJECT-TYPE SYNTAX Counter64 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 received on an unexpected interface. For RPF checking protocols (such as PIM-SM), these packets arrived on interfaces other than ipMcastRouteInIfIndex, and were dropped because of this failed RPF check. (RPF paths are 'Reverse Path Forwarding' path; the unicast routes to the expected origin of multicast data flows). Other protocols may drop packets on an incoming interface check for different reasons (for example, BIDIR-PIM performs a DF check on receipt of packets). All packets dropped as a result of an incoming interface check are counted here. If this counter increases rapidly, this indicates a problem. A significant quantity of multicast data is arriving at this router on unexpected interfaces, and is not being forwarded. For guidance, if the rate of increase of this counter McWalter, et al. Standards Track [Page 20]
RFC 5132 IP MCAST MIB December 2007 exceeds 1% of the rate of increase of ipMcastRoutePkts, then there are multicast routing problems that require investigation. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteTimeStamp." REFERENCE "RFC 4601 and RFC 5015" ::= { ipMcastRouteEntry 23 } ipMcastRouteBps OBJECT-TYPE SYNTAX CounterBasedGauge64 UNITS "bits per second" MAX-ACCESS read-only STATUS current DESCRIPTION "Bits per second forwarded by this router using this multicast routing entry. This value is a sample; it is the number of bits forwarded during the last whole 1 second sampling period. The value during the current 1 second sampling period is not made available until the period is completed. The quantity being sampled is the same as that measured by ipMcastRouteOctets. The units and the sampling method are different." ::= { ipMcastRouteEntry 24 } -- -- 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 6 } ipMcastRouteNextHopEntry OBJECT-TYPE SYNTAX IpMcastRouteNextHopEntry McWalter, et al. Standards Track [Page 21]
RFC 5132 IP MCAST MIB December 2007 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. OIDs are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." INDEX { ipMcastRouteNextHopGroupAddressType, ipMcastRouteNextHopGroup, ipMcastRouteNextHopGroupPrefixLength, ipMcastRouteNextHopSourceAddressType, ipMcastRouteNextHopSource, ipMcastRouteNextHopSourcePrefixLength, ipMcastRouteNextHopIfIndex, ipMcastRouteNextHopAddressType, ipMcastRouteNextHopAddress } ::= { ipMcastRouteNextHopTable 1 } IpMcastRouteNextHopEntry ::= SEQUENCE { ipMcastRouteNextHopGroupAddressType InetAddressType, ipMcastRouteNextHopGroup InetAddress, ipMcastRouteNextHopGroupPrefixLength InetAddressPrefixLength, ipMcastRouteNextHopSourceAddressType InetAddressType, ipMcastRouteNextHopSource InetAddress, ipMcastRouteNextHopSourcePrefixLength InetAddressPrefixLength, ipMcastRouteNextHopIfIndex InterfaceIndex, ipMcastRouteNextHopAddressType InetAddressType, ipMcastRouteNextHopAddress InetAddress, ipMcastRouteNextHopState INTEGER, ipMcastRouteNextHopTimeStamp TimeStamp, ipMcastRouteNextHopExpiryTime TimeTicks, ipMcastRouteNextHopClosestMemberHops Unsigned32, ipMcastRouteNextHopProtocol IANAipMRouteProtocol, ipMcastRouteNextHopOctets Counter64, ipMcastRouteNextHopPkts Counter64 } ipMcastRouteNextHopGroupAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value indicating the address family of the address McWalter, et al. Standards Track [Page 22]
RFC 5132 IP MCAST MIB December 2007 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 address which, when combined with the corresponding value specified in ipMcastRouteNextHopGroupPrefixLength, identifies the groups for which this entry contains multicast forwarding information. This address object is only significant up to ipMcastRouteNextHopGroupPrefixLength bits. The remaining address bits are set to 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 addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this forwarding state applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastRouteNextHopEntry 2 } ipMcastRouteNextHopGroupPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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. The InetAddressType is given by ipMcastRouteNextHopGroupAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." ::= { ipMcastRouteNextHopEntry 3 } ipMcastRouteNextHopSourceAddressType OBJECT-TYPE McWalter, et al. Standards Track [Page 23]
RFC 5132 IP MCAST MIB December 2007 SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value indicating the address family of the address contained in ipMcastRouteNextHopSource. A value of unknown(0) indicates a non-source-specific entry, corresponding to all sources in the group. Otherwise, the value MUST be the same as the value of ipMcastRouteNextHopGroupType." ::= { ipMcastRouteNextHopEntry 4 } ipMcastRouteNextHopSource OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "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 remaining address bits are set to 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 addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this source address applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastRouteNextHopEntry 5 } ipMcastRouteNextHopSourcePrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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. McWalter, et al. Standards Track [Page 24]
RFC 5132 IP MCAST MIB December 2007 The InetAddressType is given by ipMcastRouteNextHopSourceAddressType. For the value 'unknown', this object must be zero. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range 8..128." ::= { ipMcastRouteNextHopEntry 6 } 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 7 } ipMcastRouteNextHopAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value indicating the address family of the address contained in ipMcastRouteNextHopAddress." ::= { ipMcastRouteNextHopEntry 8 } ipMcastRouteNextHopAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "The address of the next-hop specific to this entry. For most interfaces, this is identical to ipMcastRouteNextHopGroup. Non-Broadcast Multi-Access (NBMA) interfaces, however, may have multiple next-hop addresses out a single outgoing interface." ::= { ipMcastRouteNextHopEntry 9 } 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 McWalter, et al. Standards Track [Page 25]
RFC 5132 IP MCAST MIB December 2007 not." ::= { ipMcastRouteNextHopEntry 10 } ipMcastRouteNextHopTimeStamp OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at which the multicast routing information represented by this entry was learned by the router. If this information was present at the most recent re- initialization of the local management subsystem, then this object contains a zero value." ::= { ipMcastRouteNextHopEntry 11 } 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 12 } ipMcastRouteNextHopClosestMemberHops OBJECT-TYPE SYNTAX Unsigned32 (0..256) MAX-ACCESS read-only STATUS current 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 that have a TTL (IPv4) or Hop Count (IPv6) less than this number of hops will not be forwarded to this next-hop. A value of 0 means all multicast datagrams are forwarded out the interface. A value of 256 means that no multicast datagrams are forwarded out the interface. McWalter, et al. Standards Track [Page 26]
RFC 5132 IP MCAST MIB December 2007 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 0." ::= { ipMcastRouteNextHopEntry 13 } ipMcastRouteNextHopProtocol OBJECT-TYPE SYNTAX IANAipMRouteProtocol MAX-ACCESS read-only STATUS current DESCRIPTION "The routing mechanism via which this next-hop was learned." ::= { ipMcastRouteNextHopEntry 14 } ipMcastRouteNextHopOctets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of octets of multicast packets that have been forwarded using this route. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteNextHopTimeStamp." ::= { ipMcastRouteNextHopEntry 15 } ipMcastRouteNextHopPkts OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets which have been forwarded using this route. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of routes being removed and replaced, which can be detected by observing the value of ipMcastRouteNextHopTimeStamp." ::= { ipMcastRouteNextHopEntry 16 } -- -- The IP Multicast Scope Boundary Table -- McWalter, et al. Standards Track [Page 27]
RFC 5132 IP MCAST MIB December 2007 ipMcastBoundaryTable OBJECT-TYPE SYNTAX SEQUENCE OF IpMcastBoundaryEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing the system's multicast scope zone boundaries." REFERENCE "RFC 4007 Section 5" ::= { ipMcast 7 } ipMcastBoundaryEntry OBJECT-TYPE SYNTAX IpMcastBoundaryEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry (conceptual row) describing one of this device's multicast scope zone boundaries. OIDs are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." REFERENCE "RFC 2365 Section 5, RFC 4007 Section 5" INDEX { ipMcastBoundaryIfIndex, ipMcastBoundaryAddressType, ipMcastBoundaryAddress, ipMcastBoundaryAddressPrefixLength } ::= { ipMcastBoundaryTable 1 } IpMcastBoundaryEntry ::= SEQUENCE { ipMcastBoundaryIfIndex InterfaceIndex, ipMcastBoundaryAddressType InetAddressType, ipMcastBoundaryAddress InetAddress, ipMcastBoundaryAddressPrefixLength InetAddressPrefixLength, ipMcastBoundaryTimeStamp TimeStamp, ipMcastBoundaryDroppedMcastOctets Counter64, ipMcastBoundaryDroppedMcastPkts Counter64, ipMcastBoundaryStatus RowStatus, ipMcastBoundaryStorageType StorageType } 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 McWalter, et al. Standards Track [Page 28]
RFC 5132 IP MCAST MIB December 2007 associated address/mask range will not be forwarded over this interface. For IPv4, zone boundaries cut through links. Therefore, this is an external interface. This may be either a physical or virtual interface (tunnel, encapsulation, and so forth.) For IPv6, zone boundaries cut through nodes. Therefore, this is a virtual interface within the node. This is not an external interface, either real or virtual. Packets crossing this interface neither arrive at nor leave the node, but only move between zones within the node." REFERENCE "RFC 2365 Section 5, RFC 4007 Section 5" ::= { 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 } 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 multicast address ranges must be prefixed by 239.0.0.0/8. Scoped IPv6 multicast address ranges are FF0x::/16, where x is a valid RFC 4291 multicast scope. An IPv6 address prefixed by FF1x::/16 is a non-permanently- assigned address. An IPv6 address prefixed by FF3x::/16 is a unicast-prefix-based multicast addresses. A zone boundary for FF0x::/16 implies an identical boundary for these other prefixes. No separate FF1x::/16 or FF3x::/16 entries exist in this table. This address object is only significant up to McWalter, et al. Standards Track [Page 29]
RFC 5132 IP MCAST MIB December 2007 ipMcastBoundaryAddressPrefixLength bits. The remaining address bits are set to 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." ::= { ipMcastBoundaryEntry 3 } ipMcastBoundaryAddressPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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. The InetAddressType is given by ipMcastBoundaryAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be set to 16." ::= { ipMcastBoundaryEntry 4 } ipMcastBoundaryTimeStamp OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at which the multicast boundary information represented by this entry was learned by the router. If this information was present at the most recent re- initialization of the local management subsystem, then this object contains a zero value." ::= { ipMcastBoundaryEntry 5 } ipMcastBoundaryDroppedMcastOctets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of octets of multicast packets that have been dropped as a result of this zone boundary configuration. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of boundary McWalter, et al. Standards Track [Page 30]
RFC 5132 IP MCAST MIB December 2007 configuration being removed and replaced, which can be detected by observing the value of ipMcastBoundaryTimeStamp." ::= { ipMcastBoundaryEntry 6 } ipMcastBoundaryDroppedMcastPkts OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of multicast packets that have been dropped as a result of this zone boundary configuration. Discontinuities in this monotonically increasing value occur at re-initialization of the management system. Discontinuities can also occur as a result of boundary configuration being removed and replaced, which can be detected by observing the value of ipMcastBoundaryTimeStamp." ::= { ipMcastBoundaryEntry 7 } 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. This status object can be set to active(1) without setting any other columnar objects in this entry. All writeable objects in this entry can be modified when the status of this entry is active(1)." ::= { ipMcastBoundaryEntry 8 } ipMcastBoundaryStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { nonVolatile } ::= { ipMcastBoundaryEntry 9 } -- McWalter, et al. Standards Track [Page 31]
RFC 5132 IP MCAST MIB December 2007 -- The IP Multicast Scope Name Table -- ipMcastScopeNameTable OBJECT-TYPE SYNTAX SEQUENCE OF IpMcastScopeNameEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing multicast scope names." REFERENCE "RFC 4007 Section 4" ::= { ipMcast 8 } ipMcastScopeNameEntry OBJECT-TYPE SYNTAX IpMcastScopeNameEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry (conceptual row) that names a multicast address scope. OIDs are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." REFERENCE "RFC 4007 Section 4" INDEX { ipMcastScopeNameAddressType, ipMcastScopeNameAddress, ipMcastScopeNameAddressPrefixLength, ipMcastScopeNameLanguage } ::= { ipMcastScopeNameTable 1 } IpMcastScopeNameEntry ::= SEQUENCE { ipMcastScopeNameAddressType InetAddressType, ipMcastScopeNameAddress InetAddress, ipMcastScopeNameAddressPrefixLength InetAddressPrefixLength, ipMcastScopeNameLanguage LangTag, ipMcastScopeNameString SnmpAdminString, ipMcastScopeNameDefault TruthValue, ipMcastScopeNameStatus RowStatus, ipMcastScopeNameStorageType StorageType } ipMcastScopeNameAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value indicating the address family of the address McWalter, et al. Standards Track [Page 32]
RFC 5132 IP MCAST MIB December 2007 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, identifies the group range associated with the multicast scope. Scoped IPv4 multicast address ranges must be prefixed by 239.0.0.0/8. Scoped IPv6 multicast address ranges are FF0x::/16, where x is a valid RFC 4291 multicast scope. An IPv6 address prefixed by FF1x::/16 is a non-permanently- assigned address. An IPv6 address prefixed by FF3x::/16 is a unicast-prefix-based multicast addresses. A scope FF0x::/16 implies an identical scope name for these other prefixes. No separate FF1x::/16 or FF3x::/16 entries exist in this table. This address object is only significant up to ipMcastScopeNameAddressPrefixLength bits. The remaining address bits are set to 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." ::= { ipMcastScopeNameEntry 2 } ipMcastScopeNameAddressPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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. The InetAddressType is given by ipMcastScopeNameAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be set to 16." ::= { ipMcastScopeNameEntry 3 } McWalter, et al. Standards Track [Page 33]
RFC 5132 IP MCAST MIB December 2007 ipMcastScopeNameLanguage OBJECT-TYPE SYNTAX LangTag MAX-ACCESS not-accessible STATUS current DESCRIPTION "Language tag associated with the scope name." REFERENCE "RFC 4646" ::= { 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 with decimal values to describe the address and mask length associated with the scope. When no name is specified, the default value of this object for IPv6 should be the string FF0x::/16, with x replaced by the hexadecimal value for the RFC 4291 multicast scope. An IPv6 address prefixed by FF1x::/16 is a non-permanently- assigned address. An IPv6 address prefixed by FF3x::/16 is a unicast-prefix-based multicast addresses. A scope FF0x::/16 implies an identical scope name for these other prefixes. No separate FF1x::/16 or FF3x::/16 entries exist in this table." REFERENCE "RFC 2365, RFC 3306 Section 4, RFC 4291 Section 2.7" ::= { 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 } McWalter, et al. Standards Track [Page 34]
RFC 5132 IP MCAST MIB December 2007 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 } ipMcastScopeNameStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { nonVolatile } ::= { ipMcastScopeNameEntry 8 } -- -- 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) identifying a local application or service that has joined a multicast group as a listener. McWalter, et al. Standards Track [Page 35]
RFC 5132 IP MCAST MIB December 2007 OIDs are limited to 128 sub-identifiers, but this limit is not enforced by the syntax of this entry. In practice, this does not present a problem, because IP address types allowed by conformance statements do not exceed this limit." INDEX { ipMcastLocalListenerGroupAddressType, ipMcastLocalListenerGroupAddress, ipMcastLocalListenerSourceAddressType, ipMcastLocalListenerSourceAddress, ipMcastLocalListenerSourcePrefixLength, ipMcastLocalListenerIfIndex, ipMcastLocalListenerRunIndex } ::= { ipMcastLocalListenerTable 1 } IpMcastLocalListenerEntry ::= SEQUENCE { ipMcastLocalListenerGroupAddressType InetAddressType, ipMcastLocalListenerGroupAddress InetAddress, ipMcastLocalListenerSourceAddressType InetAddressType, ipMcastLocalListenerSourceAddress InetAddress, ipMcastLocalListenerSourcePrefixLength InetAddressPrefixLength, ipMcastLocalListenerIfIndex InterfaceIndex, ipMcastLocalListenerRunIndex Unsigned32 } 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 McWalter, et al. Standards Track [Page 36]
RFC 5132 IP MCAST MIB December 2007 "A value indicating the address family of the address contained in ipMcastLocalListenerSource. A value of unknown(0) indicates a non-source-specific entry, corresponding to all sources in the group. Otherwise, the value MUST be the same as the value of ipMcastLocalListenerGroupAddressType." ::= { ipMcastLocalListenerEntry 3 } ipMcastLocalListenerSourceAddress OBJECT-TYPE 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 remaining address bits are set to 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 addresses of type ipv4z or ipv6z, the appended zone index is significant even though it lies beyond the prefix length. The use of these address types indicate that this listener address applies only within the given zone. Zone index zero is not valid in this table." ::= { ipMcastLocalListenerEntry 4 } ipMcastLocalListenerSourcePrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength 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 local listener. The InetAddressType is given by ipMcastLocalListenerSourceAddressType. For the value 'unknown', this object must be zero. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be in the range McWalter, et al. Standards Track [Page 37]
RFC 5132 IP MCAST MIB December 2007 8..128." ::= { ipMcastLocalListenerEntry 5 } ipMcastLocalListenerIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "The IfIndex value of the interface for which this entry specifies a local listener." ::= { ipMcastLocalListenerEntry 6 } ipMcastLocalListenerRunIndex OBJECT-TYPE SYNTAX Unsigned32 (0..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. A value of zero indicates that the application instance(s) cannot be identified. A value of zero indicates that one or more unidentified applications have joined the specified multicast groups (for the specified sources) as listeners." REFERENCE "RFC 2287 sysApplRunIndex" ::= { ipMcastLocalListenerEntry 7 } -- -- The Multicast Zone Table -- ipMcastZoneTable OBJECT-TYPE SYNTAX SEQUENCE OF IpMcastZoneEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing scope zones on this device." REFERENCE "RFC 4007 Section 5" ::= { ipMcast 10 } ipMcastZoneEntry OBJECT-TYPE SYNTAX IpMcastZoneEntry MAX-ACCESS not-accessible STATUS current McWalter, et al. Standards Track [Page 38]
RFC 5132 IP MCAST MIB December 2007 DESCRIPTION "An entry (conceptual row) describing a scope zone on this device." REFERENCE "RFC 4007 Section 5" INDEX { ipMcastZoneIndex } ::= { ipMcastZoneTable 1 } IpMcastZoneEntry ::= SEQUENCE { ipMcastZoneIndex InetZoneIndex, ipMcastZoneScopeDefaultZoneIndex InetZoneIndex, ipMcastZoneScopeAddressType InetAddressType, ipMcastZoneScopeAddress InetAddress, ipMcastZoneScopeAddressPrefixLength InetAddressPrefixLength } ipMcastZoneIndex OBJECT-TYPE SYNTAX InetZoneIndex (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "This zone index uniquely identifies a zone on a device. Each zone is for a given scope. Scope-level information in this table is for the unique scope that corresponds to this zone. Zero is a special value used to request the default zone for a given scope. Zero is not a valid value for this object. To test whether ipMcastZoneIndex is the default zone for this scope, test whether ipMcastZoneIndex is equal to ipMcastZoneScopeDefaultZoneIndex." ::= { ipMcastZoneEntry 1 } ipMcastZoneScopeDefaultZoneIndex OBJECT-TYPE SYNTAX InetZoneIndex (1..4294967295) MAX-ACCESS read-only STATUS current DESCRIPTION "The default zone index for this scope. This is the zone that this device will use if the default (zero) zone is requested for this scope. Zero is not a valid value for this object." ::= { ipMcastZoneEntry 2 } ipMcastZoneScopeAddressType OBJECT-TYPE SYNTAX InetAddressType McWalter, et al. Standards Track [Page 39]
RFC 5132 IP MCAST MIB December 2007 MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address type for which this scope zone exists." ::= { ipMcastZoneEntry 3 } ipMcastZoneScopeAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The multicast group address which, when combined with ipMcastZoneScopeAddressPrefixLength, gives the multicast address range for this scope. The InetAddressType is given by ipMcastZoneScopeAddressType. Scoped IPv4 multicast address ranges are prefixed by 239.0.0.0/8. Scoped IPv6 multicast address ranges are FF0x::/16, where x is a valid RFC 4291 multicast scope. An IPv6 address prefixed by FF1x::/16 is a non-permanently- assigned address. An IPv6 address prefixed by FF3x::/16 is a unicast-prefix-based multicast addresses. A scope FF0x::/16 implies an identical scope for these other prefixes. No separate FF1x::/16 or FF3x::/16 entries exist in this table. This address object is only significant up to ipMcastZoneScopeAddressPrefixLength bits. The remaining address bits are set to zero." REFERENCE "RFC 2365, RFC 3306 Section 4, RFC 4291 Section 2.7" ::= { ipMcastZoneEntry 4 } ipMcastZoneScopeAddressPrefixLength OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS read-only STATUS current DESCRIPTION "The length in bits of the mask which, when combined with ipMcastZoneScopeAddress, gives the multicast address prefix for this scope. The InetAddressType is given by ipMcastZoneScopeAddressType. For values 'ipv4' and 'ipv4z', this object must be in the range 4..32. For values 'ipv6' and 'ipv6z', this object must be set to 16." ::= { ipMcastZoneEntry 5 } McWalter, et al. Standards Track [Page 40]
RFC 5132 IP MCAST MIB December 2007 -- -- Conformance information -- ipMcastMIBConformance OBJECT IDENTIFIER ::= { ipMcastMIB 2 } ipMcastMIBCompliances OBJECT IDENTIFIER ::= { ipMcastMIBConformance 1 } ipMcastMIBGroups OBJECT IDENTIFIER ::= { ipMcastMIBConformance 2 } -- -- Compliance statements -- ipMcastMIBComplianceHost MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for hosts supporting IPMCAST-MIB. Support for either InetAddressType ipv4 or ipv6 is mandatory; support for both InetAddressTypes ipv4 and ipv6 is optional. Support for types ipv4z and ipv6z is optional. -- OBJECT ipMcastLocalListenerGroupAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastLocalListenerGroupAddress -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastLocalListenerSourceAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastLocalListenerSourceAddress -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6." MODULE -- this module MANDATORY-GROUPS { ipMcastMIBLocalListenerGroup, McWalter, et al. Standards Track [Page 41]
RFC 5132 IP MCAST MIB December 2007 ipMcastMIBBasicGroup } OBJECT ipMcastEnabled MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastDeviceConfigStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." GROUP ipMcastMIBSsmGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteDiagnosticsGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBBoundaryIfGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBScopeNameGroup DESCRIPTION "This group is optional." ::= { ipMcastMIBCompliances 1 } ipMcastMIBComplianceRouter MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for routers supporting IPMCAST-MIB. Support for either InetAddressType ipv4 or ipv6 is mandatory; support for both InetAddressTypes ipv4 and ipv6 is optional. Support for types ipv4z and ipv6z is optional. -- OBJECT ipMcastSsmRangeAddressType -- SYNTAX InetAddressType {ipv4(1), ipv6(2), ipv4z(3), -- ipv6z(4)} McWalter, et al. Standards Track [Page 42]
RFC 5132 IP MCAST MIB December 2007 -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastSsmRangeAddress -- SYNTAX InetAddress (SIZE (4|8|16|20)) -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastRouteGroupAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteGroup -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteSourceAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteSource -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopGroupAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopGroup -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopSourceAddressType McWalter, et al. Standards Track [Page 43]
RFC 5132 IP MCAST MIB December 2007 -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopSource -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteNextHopAddress -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6." MODULE -- this module MANDATORY-GROUPS { ipMcastMIBRouteProtoGroup, ipMcastMIBBasicGroup, ipMcastMIBSsmGroup, ipMcastMIBRouteGroup } OBJECT ipMcastEnabled MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastDeviceConfigStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceTtl MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceRateLimit MIN-ACCESS read-only McWalter, et al. Standards Track [Page 44]
RFC 5132 IP MCAST MIB December 2007 DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastRouteUpstreamNeighborType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4) } DESCRIPTION "This compliance requires support for unknown and either ipv4 or ipv6." OBJECT ipMcastRouteUpstreamNeighbor SYNTAX InetAddress (SIZE (0|4|8|16|20)) DESCRIPTION "This compliance requires support for unknown and either ipv4 or ipv6." OBJECT ipMcastRouteRtAddressType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4) } DESCRIPTION "This compliance requires support for unknown and either ipv4 or ipv6." OBJECT ipMcastRouteRtAddress SYNTAX InetAddress (SIZE (0|4|8|16|20)) DESCRIPTION "This compliance requires support for unknown and either ipv4 or ipv6." OBJECT ipMcastSsmRangeRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastSsmRangeStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." GROUP ipMcastMIBRouteDiagnosticsGroup DESCRIPTION "This group is not mandatory, but SHOULD be supported where hardware permits." McWalter, et al. Standards Track [Page 45]
RFC 5132 IP MCAST MIB December 2007 GROUP ipMcastMIBPktsOutGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBHopCountGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteOctetsGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteBpsGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBLocalListenerGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBBoundaryIfGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBScopeNameGroup DESCRIPTION "This group is optional." ::= { ipMcastMIBCompliances 2 } ipMcastMIBComplianceBorderRouter MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for routers on scope boundaries supporting IPMCAST-MIB. Support for either InetAddressType ipv4z or ipv6z is mandatory; support for both InetAddressTypes ipv4z and ipv6z is optional. -- OBJECT ipMcastSsmRangeAddressType -- SYNTAX InetAddressType {ipv4(1), ipv6(2), ipv4z(3), -- ipv6z(4)} -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastSsmRangeAddress -- SYNTAX InetAddress (SIZE (4|8|16|20)) McWalter, et al. Standards Track [Page 46]
RFC 5132 IP MCAST MIB December 2007 -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastRouteGroupAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 or ipv6. -- -- OBJECT ipMcastRouteGroup -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteSourceAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteSource -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteNextHopGroupAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteNextHopGroup -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteNextHopSourceAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. McWalter, et al. Standards Track [Page 47]
RFC 5132 IP MCAST MIB December 2007 -- -- OBJECT ipMcastRouteNextHopSource -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteNextHopAddressType -- SYNTAX InetAddressType {unknown(0), ipv4(1), ipv6(2), -- ipv4z(3), ipv6z(4)} -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastRouteNextHopAddress -- SYNTAX InetAddress (SIZE (0|4|8|16|20)) -- DESCRIPTION -- This compliance requires support for unknown and -- either ipv4 and ipv4z or ipv6 and ipv6z. -- -- OBJECT ipMcastBoundaryAddressType -- SYNTAX InetAddressType {ipv4(1), ipv6(2)} -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastBoundaryAddress -- SYNTAX InetAddress (SIZE (4|16) -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastScopeNameAddressType -- SYNTAX InetAddressType {ipv4(1), ipv6(2)} -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6. -- -- OBJECT ipMcastScopeNameAddress -- SYNTAX InetAddress (SIZE (4|16) -- DESCRIPTION -- This compliance requires support for ipv4 or ipv6." MODULE -- this module MANDATORY-GROUPS { ipMcastMIBRouteProtoGroup, ipMcastMIBBasicGroup, ipMcastMIBSsmGroup, ipMcastMIBRouteGroup, ipMcastMIBBoundaryIfGroup, ipMcastMIBScopeNameGroup } McWalter, et al. Standards Track [Page 48]
RFC 5132 IP MCAST MIB December 2007 OBJECT ipMcastEnabled MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastDeviceConfigStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceTtl MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceRateLimit MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastInterfaceStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastRouteUpstreamNeighborType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4) } DESCRIPTION "This compliance requires support for unknown and either ipv4 and ipv4z, or ipv6 and ipv6z." OBJECT ipMcastRouteUpstreamNeighbor SYNTAX InetAddress (SIZE (0|4|8|16|20)) DESCRIPTION "This compliance requires support for unknown and either ipv4 and ipv4z, or ipv6 and ipv6z." OBJECT ipMcastRouteRtAddressType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4) } DESCRIPTION "This compliance requires support for unknown and either ipv4 and ipv4z, or ipv6 and ipv6z." OBJECT ipMcastRouteRtAddress SYNTAX InetAddress (SIZE (0|4|8|16|20)) DESCRIPTION McWalter, et al. Standards Track [Page 49]
RFC 5132 IP MCAST MIB December 2007 "This compliance requires support for unknown and either ipv4 and ipv4z, or ipv6 and ipv6z." OBJECT ipMcastSsmRangeRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT ipMcastSsmRangeStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." GROUP ipMcastMIBRouteDiagnosticsGroup DESCRIPTION "This group is not mandatory, but SHOULD be supported where hardware permits." GROUP ipMcastMIBPktsOutGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBHopCountGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteOctetsGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBRouteBpsGroup DESCRIPTION "This group is optional." GROUP ipMcastMIBLocalListenerGroup DESCRIPTION "This group is optional." OBJECT ipMcastZoneScopeAddressType SYNTAX InetAddressType { ipv4(1), ipv6(2) } DESCRIPTION "This compliance requires support for ipv4 or ipv6." OBJECT ipMcastZoneScopeAddress SYNTAX InetAddress (SIZE (4|16)) DESCRIPTION "This compliance requires support for ipv4 or ipv6." McWalter, et al. Standards Track [Page 50]
RFC 5132 IP MCAST MIB December 2007 ::= { ipMcastMIBCompliances 3 } -- -- Units of conformance -- ipMcastMIBBasicGroup OBJECT-GROUP OBJECTS { ipMcastEnabled, ipMcastRouteEntryCount, ipMcastDeviceConfigStorageType } STATUS current DESCRIPTION "A collection of objects to support basic management of IP Multicast protocols." ::= { ipMcastMIBGroups 1 } ipMcastMIBSsmGroup OBJECT-GROUP OBJECTS { ipMcastSsmRangeRowStatus, ipMcastSsmRangeStorageType } STATUS current DESCRIPTION "A collection of objects to support management of Source- Specific Multicast routing." ::= { ipMcastMIBGroups 2 } ipMcastMIBRouteGroup OBJECT-GROUP OBJECTS { ipMcastInterfaceTtl, ipMcastInterfaceRateLimit, ipMcastInterfaceStorageType, ipMcastRouteUpstreamNeighborType, ipMcastRouteUpstreamNeighbor, ipMcastRouteInIfIndex, ipMcastRouteTimeStamp, ipMcastRouteExpiryTime, ipMcastRouteNextHopState, ipMcastRouteNextHopTimeStamp, ipMcastRouteNextHopExpiryTime } STATUS current DESCRIPTION "A collection of objects to support basic management of IP Multicast routing." ::= { ipMcastMIBGroups 3 } ipMcastMIBRouteDiagnosticsGroup OBJECT-GROUP OBJECTS { ipMcastRoutePkts, ipMcastRouteTtlDropPackets, ipMcastRouteDifferentInIfPackets McWalter, et al. Standards Track [Page 51]
RFC 5132 IP MCAST MIB December 2007 } STATUS current DESCRIPTION "A collection of routing diagnostic packet counters." ::= { ipMcastMIBGroups 4 } ipMcastMIBPktsOutGroup OBJECT-GROUP OBJECTS { ipMcastRouteNextHopTimeStamp, ipMcastRouteNextHopPkts } STATUS current DESCRIPTION "A collection of objects to support management of packet counters for each outgoing interface entry of a route." ::= { ipMcastMIBGroups 5 } 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 6 } ipMcastMIBRouteOctetsGroup OBJECT-GROUP OBJECTS { ipMcastRouteTimeStamp, ipMcastRouteOctets, ipMcastRouteTtlDropOctets, ipMcastRouteDifferentInIfOctets, ipMcastRouteNextHopTimeStamp, ipMcastRouteNextHopOctets } STATUS current DESCRIPTION "A collection of objects to support management of octet counters for each forwarding entry." ::= { ipMcastMIBGroups 7 } ipMcastMIBRouteBpsGroup OBJECT-GROUP OBJECTS { ipMcastRouteBps } STATUS current DESCRIPTION "A collection of objects to support sampling of data rate in bits per second for each forwarding entry." ::= { ipMcastMIBGroups 8 } ipMcastMIBRouteProtoGroup OBJECT-GROUP OBJECTS { ipMcastRouteProtocol, ipMcastRouteRtProtocol, ipMcastRouteRtAddressType, ipMcastRouteRtAddress, ipMcastRouteRtPrefixLength, ipMcastRouteRtType, McWalter, et al. Standards Track [Page 52]
RFC 5132 IP MCAST MIB December 2007 ipMcastRouteNextHopProtocol } STATUS current DESCRIPTION "A collection of objects providing information on the relationship between multicast routing information and the IP Forwarding Table." ::= { ipMcastMIBGroups 9 } ipMcastMIBLocalListenerGroup OBJECT-GROUP OBJECTS { ipMcastLocalListenerRunIndex } STATUS current DESCRIPTION "A collection of objects to support management of local listeners on hosts or routers." ::= { ipMcastMIBGroups 10 } ipMcastMIBBoundaryIfGroup OBJECT-GROUP OBJECTS { ipMcastBoundaryTimeStamp, ipMcastBoundaryDroppedMcastOctets, ipMcastBoundaryDroppedMcastPkts, ipMcastBoundaryStatus, ipMcastBoundaryStorageType, ipMcastZoneScopeDefaultZoneIndex, ipMcastZoneScopeAddressType, ipMcastZoneScopeAddress, ipMcastZoneScopeAddressPrefixLength } STATUS current DESCRIPTION "A collection of objects to support management of multicast scope zone boundaries." ::= { ipMcastMIBGroups 11 } ipMcastMIBScopeNameGroup OBJECT-GROUP OBJECTS { ipMcastScopeNameString, ipMcastScopeNameDefault, ipMcastScopeNameStatus, ipMcastScopeNameStorageType } STATUS current DESCRIPTION "A collection of objects to support management of multicast address scope names." ::= { ipMcastMIBGroups 12 } END McWalter, et al. Standards Track [Page 53]
RFC 5132 IP MCAST MIB December 2007 7. Security Considerations 7.1. SNMPv3 SNMP versions prior to SNMPv3 did not include adequate security. 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 GET/SET (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. 7.2. Writeable Objects There are a number of management objects defined in this MIB module with a MAX-ACCESS clause of read-write and/or read-create. This section discusses and lists these elements. 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 network operations. In this MIB module, possible effects that can be induced by SET operations on writeable objects include: o Modifications to multicast routing behavior that prevent or disrupt services provided by the network, including (but not limited to) multicast data traffic delivery. o Modifications to multicast routing behavior that allow interception or subversion of 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. McWalter, et al. Standards Track [Page 54]
RFC 5132 IP MCAST MIB December 2007 The following are the read-write and read-create objects defined in this MIB module. ipMcastEnabled ipMcastDeviceConfigStorageType ipMcastInterfaceTtl ipMcastInterfaceRateLimit ipMcastInterfaceStorageType ipMcastSsmRangeRowStatus ipMcastSsmRangeStorageType ipMcastBoundaryStatus ipMcastBoundaryStorageType ipMcastScopeNameString ipMcastScopeNameDefault ipMcastScopeNameStatus ipMcastScopeNameStorageType 7.3. Readable Objects As well as the writeable objects discussed above, there are a number of readable objects (i.e., objects with a MAX-ACCESS other than not- accessible) that may be considered sensitive or vulnerable in some network environments. It is thus important to 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. In this MIB module, possible effects that can be induced by GET and/or NOTIFY operations include: o Determination of 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. o Determinion of whether multicast data is flowing in the network, or has flowed recently, as well as the locations 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. 8. IANA Considerations IPMCAST-MIB is rooted under the mib-2 subtree. IANA has assigned { mib-2 168 } to the IPMCAST-MIB module specified in this document. 9. 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. McWalter, et al. Standards Track [Page 55]
RFC 5132 IP MCAST MIB December 2007 The authors are grateful to Bill Fenner for fine ideas, and to Bharat Joshi for input and several corrections. The authors also wish to thank John Flick, Bert Wijnen, and Stig Venaas for their reviewing and comments. 10. References 10.1. Normative References [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. [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. [RFC2856] Bierman, A., McCloghrie, K., and R. Presuhn, "Textual Conventions for Additional High Capacity Data Types", RFC 2856, June 2000. [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. [RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, December 2002. [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005. McWalter, et al. Standards Track [Page 56]
RFC 5132 IP MCAST MIB December 2007 [RFC4007] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., and B. Zill, "IPv6 Scoped Address Architecture", RFC 4007, March 2005. [RFC4291] Hinden, R. and S. Deering, "IP Version 6 Addressing Architecture", RFC 4291, February 2006. [RFC5131] McWalter, D., "A MIB Textual Convention for Language Tags", RFC 5131, December 2007. 10.2. Informative References [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. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC3569] Bhattacharyya, S., "An Overview of Source-Specific Multicast (SSM)", RFC 3569, July 2003. [RFC4293] Routhier, S., "Management Information Base for the Internet Protocol (IP)", RFC 4293, April 2006. [RFC4601] Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas, "Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)", RFC 4601, August 2006. [RFC4646] Phillips, A. and M. Davis, "Tags for Identifying Languages", BCP 47, RFC 4646, September 2006. [RFC5015] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano, "Bidirectional Protocol Independent Multicast (BIDIR- PIM)", RFC 5015, October 2007. McWalter, et al. Standards Track [Page 57]
RFC 5132 IP MCAST MIB December 2007 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 McWalter, et al. Standards Track [Page 58]
RFC 5132 IP MCAST MIB December 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. McWalter, et al. Standards Track [Page 59]