rfc1657.txt

RFC 的详细文档！

                    MAX-ACCESS read-only
                    STATUS     current
                    DESCRIPTION
                            "Elapsed time in seconds since the last BGP
                            UPDATE message was received from the peer.
                            Each time bgpPeerInUpdates is incremented,
                            the value of this object is set to zero
                            (0)."
                    ::= { bgpPeerEntry 24 }



                bgpIdentifier OBJECT-TYPE
                    SYNTAX     IpAddress
                    MAX-ACCESS read-only
                    STATUS     current
                    DESCRIPTION
                            "The BGP Identifier of local system."
                    ::= { bgp 4 }








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RFC 1657                       BGP-4 MIB                       July 1994


                -- 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 deprecated.

                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,
                    bgpPathAttrDestNetwork
                         IpAddress,
                    bgpPathAttrOrigin
                         INTEGER,
                    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."



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RFC 1657                       BGP-4 MIB                       July 1994


                    ::= { 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-only
                    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 }



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RFC 1657                       BGP-4 MIB                       July 1994


                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 to
                            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
                         INTEGER,
                    bgp4PathAttrIpAddrPrefix
                         IpAddress,
                    bgp4PathAttrOrigin
                         INTEGER,
                    bgp4PathAttrASPathSegment



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RFC 1657                       BGP-4 MIB                       July 1994


                         OCTET STRING,
                    bgp4PathAttrNextHop
                         IpAddress,
                    bgp4PathAttrMultiExitDisc
                         INTEGER,
                    bgp4PathAttrLocalPref
                         INTEGER,
                    bgp4PathAttrAtomicAggregate
                         INTEGER,
                    bgp4PathAttrAggregatorAS
                         INTEGER,
                    bgp4PathAttrAggregatorAddr
                         IpAddress,
                    bgp4PathAttrCalcLocalPref
                         INTEGER,
                    bgp4PathAttrBest
                         INTEGER,
                    bgp4PathAttrUnknown
                         OCTET STRING

                }

                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     INTEGER (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



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RFC 1657                       BGP-4 MIB                       July 1994


                            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."
                    ::= { 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.