📄 draft-ietf-idr-bgp4-mib-07.txt
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MAX-ACCESS read-only STATUS current DESCRIPTION "The BGP Identifier of local system." ::= { bgp 4 } -- Received Path Attribute Table. This table contains, -- one entry per path to a network, path attributes -- received from all peers running BGP version 3 or less. -- This table is obsolete, having been replaced in -- functionality with the bgp4PathAttrTable. bgpRcvdPathAttrTable OBJECT-TYPE SYNTAX SEQUENCE OF BgpPathAttrEntry MAX-ACCESS not-accessible STATUS obsolete DESCRIPTION "The BGP Received Path Attribute Table contains information about paths to destination networks received from all peers running BGP version 3 or less." ::= { bgp 5 } bgpPathAttrEntry OBJECT-TYPE SYNTAX BgpPathAttrEntry MAX-ACCESS not-accessible STATUS obsolete DESCRIPTION "Information about a path to a network." INDEX { bgpPathAttrDestNetwork, bgpPathAttrPeer } ::= { bgpRcvdPathAttrTable 1 } BgpPathAttrEntry ::= SEQUENCE { bgpPathAttrPeer IpAddress,Expires February 2002 [Page 14] INTERNET DRAFT BGP4-MIB July 2001 bgpPathAttrDestNetwork IpAddress, bgpPathAttrOrigin Integer32, bgpPathAttrASPath OCTET STRING, bgpPathAttrNextHop IpAddress, bgpPathAttrInterASMetric Integer32 } bgpPathAttrPeer OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS obsolete DESCRIPTION "The IP address of the peer where the path information was learned." ::= { bgpPathAttrEntry 1 } bgpPathAttrDestNetwork OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS obsolete DESCRIPTION "The address of the destination network." ::= { bgpPathAttrEntry 2 } bgpPathAttrOrigin OBJECT-TYPE SYNTAX INTEGER { igp(1),-- networks are interior egp(2),-- networks learned via EGP incomplete(3) -- undetermined } MAX-ACCESS read-only STATUS obsolete DESCRIPTION "The ultimate origin of the path information." ::= { bgpPathAttrEntry 3 } bgpPathAttrASPath OBJECT-TYPE SYNTAX OCTET STRING (SIZE (2..255)) MAX-ACCESS read-onlyExpires February 2002 [Page 15] INTERNET DRAFT BGP4-MIB July 2001 STATUS obsolete DESCRIPTION "The set of ASs that must be traversed to reach the network. This object is probably best represented as SEQUENCE OF INTEGER. For SMI compatibility, though, it is represented as OCTET STRING. Each AS is represented as a pair of octets according to the following algorithm: first-byte-of-pair = ASNumber / 256; second-byte-of-pair = ASNumber & 255;" ::= { bgpPathAttrEntry 4 } bgpPathAttrNextHop OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS obsolete DESCRIPTION "The address of the border router that should be used for the destination network." ::= { bgpPathAttrEntry 5 } bgpPathAttrInterASMetric OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS obsolete DESCRIPTION "The optional inter-AS metric. If this attribute has not been provided for this route, the value for this object is 0." ::= { bgpPathAttrEntry 6 } -- BGP-4 Received Path Attribute Table. This table -- contains, one entry per path to a network, path -- attributes received from all peers running BGP-4. bgp4PathAttrTable OBJECT-TYPE SYNTAX SEQUENCE OF Bgp4PathAttrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The BGP-4 Received Path Attribute Table contains information about paths toExpires February 2002 [Page 16] INTERNET DRAFT BGP4-MIB July 2001 destination networks received from all BGP4 peers." ::= { bgp 6 } bgp4PathAttrEntry OBJECT-TYPE SYNTAX Bgp4PathAttrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a path to a network." INDEX { bgp4PathAttrIpAddrPrefix, bgp4PathAttrIpAddrPrefixLen, bgp4PathAttrPeer } ::= { bgp4PathAttrTable 1 } Bgp4PathAttrEntry ::= SEQUENCE { bgp4PathAttrPeer IpAddress, bgp4PathAttrIpAddrPrefixLen Integer32, bgp4PathAttrIpAddrPrefix IpAddress, bgp4PathAttrOrigin INTEGER, bgp4PathAttrASPathSegment OCTET STRING, bgp4PathAttrNextHop IpAddress, bgp4PathAttrMultiExitDisc Integer32, bgp4PathAttrLocalPref Integer32, bgp4PathAttrAtomicAggregate INTEGER, bgp4PathAttrAggregatorAS Integer32, bgp4PathAttrAggregatorAddr IpAddress, bgp4PathAttrCalcLocalPref Integer32, bgp4PathAttrBest INTEGER, bgp4PathAttrUnknown OCTET STRING }Expires February 2002 [Page 17] INTERNET DRAFT BGP4-MIB July 2001 bgp4PathAttrPeer OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the peer where the path information was learned." ::= { bgp4PathAttrEntry 1 } bgp4PathAttrIpAddrPrefixLen OBJECT-TYPE SYNTAX Integer32 (0..32) MAX-ACCESS read-only STATUS current DESCRIPTION "Length in bits of the IP address prefix in the Network Layer Reachability Information field." ::= { bgp4PathAttrEntry 2 } bgp4PathAttrIpAddrPrefix OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "An IP address prefix in the Network Layer Reachability Information field. This object is an IP address containing the prefix with length specified by bgp4PathAttrIpAddrPrefixLen. Any bits beyond the length specified by bgp4PathAttrIpAddrPrefixLen are zeroed." ::= { bgp4PathAttrEntry 3 } bgp4PathAttrOrigin OBJECT-TYPE SYNTAX INTEGER { igp(1),-- networks are interior egp(2),-- networks learned -- via EGP incomplete(3) -- undetermined } MAX-ACCESS read-only STATUS current DESCRIPTION "The ultimate origin of the path information."Expires February 2002 [Page 18] INTERNET DRAFT BGP4-MIB July 2001 ::= { bgp4PathAttrEntry 4 } bgp4PathAttrASPathSegment OBJECT-TYPE SYNTAX OCTET STRING (SIZE (2..255)) MAX-ACCESS read-only STATUS current DESCRIPTION "The sequence of AS path segments. Each AS path segment is represented by a triple <type, length, value>. The type is a 1-octet field which has two possible values: 1 AS_SET: unordered set of ASs a route in the UPDATE message has traversed 2 AS_SEQUENCE: ordered set of ASs a route in the UPDATE message has traversed. The length is a 1-octet field containing the number of ASs in the value field. The value field contains one or more AS numbers, each AS is represented in the octet string as a pair of octets according to the following algorithm: first-byte-of-pair = ASNumber / 256; second-byte-of-pair = ASNumber & 255; Known Issues: o BGP Confederations will result in a type of value of either 3 or 4. o An AS Path may be longer than 255 octets. This may result in this object containing a truncated AS Path." ::= { bgp4PathAttrEntry 5 } bgp4PathAttrNextHop OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The address of the border router thatExpires February 2002 [Page 19] INTERNET DRAFT BGP4-MIB July 2001 should be used for the destination network. This address is the nexthop address received in the UPDATE packet." ::= { bgp4PathAttrEntry 6 } bgp4PathAttrMultiExitDisc OBJECT-TYPE SYNTAX Integer32 (-1..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "This metric is used to discriminate between multiple exit points to an adjacent autonomous system. A value of -1 indicates the absence of this attribute. Known Issues: o The BGP-4 specification uses an unsigned 32 bit number and thus this object cannot represent the full range of the protocol." ::= { bgp4PathAttrEntry 7 } bgp4PathAttrLocalPref OBJECT-TYPE SYNTAX Integer32 (-1..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "The originating BGP4 speaker's degree of preference for an advertised route. A value of -1 indicates the absence of this attribute. Known Issues: o The BGP-4 specification uses an unsigned 32 bit number and thus this object cannot represent the full range of the protocol." ::= { bgp4PathAttrEntry 8 }⌨️ 快捷键说明
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