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BGP v4 MIB Tables

B-8 XSR SNMP Proprietary and Associated Standard MIBs

BGP-4 Traps

/jointfilesconvert/1254416/bgp4PathAttrASPathSegment 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:

• AS_SET: unordered set of ASs a route in the UPDATE messages has traversed.

• AS_SEQUENCE: ordered set of ASs a route in the UPDATE messages 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;

/jointfilesconvert/1254416/bgp4PathAttrNextHop The address of the border router that should be used for the destination network.

/jointfilesconvert/1254416/bgp4PathAttrMultiExitDisc This metric discriminates between multiple exit points to an adjacent AS, ranging from 1

to 2147483647. A value of -1 indicates the absence of this attribute.

/jointfilesconvert/1254416/bgp4PathAttrLocalPref The originating BGP4 speaker's degree of preference for an advertised route, ranging

from 1 to 2147483647. A value of -1 indicates the absence of this attribute.

/jointfilesconvert/1254416/bgp4PathAttrAtomicAggregate Whether or not the local system has selected a less specific route without selecting a

more specific route.

/jointfilesconvert/1254416/bgp4PathAttrAggregatorAS The AS number of the last BGP4 speaker that performed route aggregation, ranging

from 0 -65535. A value of zero (0) indicates the absence of this attribute.

/jointfilesconvert/1254416/bgp4PathAttrAggregatorAddr The IP address of the last BGP4 speaker that performed route aggregation. A value of

0.0.0.0 indicates the absence of this attribute.

/jointfilesconvert/1254416/bgp4PathAttrCalcLocalPref The degree of preference calculated by the receiving BGP4 speaker for an advertised

route, ranging from 1 to 2147483647. A value of -1 indicates the absence of this

attribute.

/jointfilesconvert/1254416/bgp4PathAttrBest An indication of whether or not this route was chosen as the BGP4 route.

/jointfilesconvert/1254416/bgp4PathAttrUnknown One or more path attributes not understood by this BGP4 speaker. Range: 0-255. Size

zero (0) indicates the absence of such attribute(s). Octets beyond the maximum size, if

any, are not recorded by this object.

Table B-18 BGP-4 Traps

Field Description

/jointfilesconvert/1254416/bgpEstablished The BGP Established event is generated when the BGP FSM enters the ESTABLISHED state.

/jointfilesconvert/1254416/bgpBackwardTransition The BGPBackwardTransition Event is generated when the BGP FSM moves from a higher

numbered state to a lower number state.

Table B-17 BGP-4 Received Path Attribute Table (continued)

Field Description

1 2 ... 445 446 447 448 449 450 451 452 453 454 455 ... 465 466

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