- Enterasys Security Router User's Guide

BGP v4 MIB Tables
B-8 XSR SNMP Proprietary and Associated Standard MIBs
BGP-4 Traps
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;
bgp4PathAttrNextHop The address of the border router that should be used for the destination network.
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.
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.
bgp4PathAttrAtomicAggregate Whether or not the local system has selected a less specific route without selecting a
more specific route.
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.
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.
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.
bgp4PathAttrBest An indication of whether or not this route was chosen as the BGP4 route.
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
bgpEstablished The BGP Established event is generated when the BGP FSM enters the ESTABLISHED state.
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