Brocade Unified IP MIB Reference (Supporting FastIron Release 07.5.00) - Manual (Page 85)

Unified IP MIB Reference 57
53-1002549-02
RFC 4292: IP Forwarding Table MIB
RFC 4292: IP Forwarding Table MIB
The Brocade NetIron XMR, Brocade NetIron MLX, Brocade MLXe, Brocade NetIron CES, and
Brocade NetIron CER series devices support the entire RFC 4292 with the following exceptions.
RFC 4292 replaces RFC 2096 and RFC 2465.
• The object inetCidrRouteDiscards is not supported.
• The objects inetCidrRouteMetric2, inetCidrRouteMetric3, inetCidrRouteMetric4, and
inetCidrRouteMetric5 in the inetCidrRouteTable are not supported.
• All objects have read-only access.
bgp4V2NlriAsPath
brcdIp.3.5.1.1.9.1.24
Syntax: Octet String Read-only Specifies the contents of the BGP4 AS_PATH attribute to
provide an authorized form of the BGP4 AS_PATH along with
the human-readable bgp4V2NlriAsPathString object that can
be truncated. The object is parsed using the rules defined for
four-octet autonomous systems as defined in RFC 4893. RFC
4271 and RFC 5065 define the general format of the
AS_PATH attribute and its code points.
The AS_PATH attribute is composed of a sequence of AS
segments. Each AS segment is represented in the following
fields:
•
The path segment type and path segment are one octet
in length each. Any one of the following can represent
the path segment type field:
-
1 - AS_SET (RFC 4721)
-
2 - AS_SEQUENCE (RFC 4721)
-
3 - AS_CONFED_SEQUENCE (RFC 3065)
-
4 - AS_CONFED_SET (RFC 3065)
•
The path segment length field contains the number of
autonomous systems (not the number of octets) in the
path segment value field.
•
The path segment value field contains one or more
autonomous system numbers, each encoded as a four
octet length field in network-byte order.
NOTE: An SNMP agent can truncate the objects that are less
than its maximum theoretical length of 4072 octets. It
is recommended that when such truncation occurs on
the boundary of an encoded AS, the partial AS be
discarded from the object and the object size
adjusted accordingly. When such truncation happens,
either alone or in conjunction with the truncation of a
partially encoded AS, it will yield an empty path
segment value. In that case, the path segment type
and path segment length components of the
truncated AS_PATH attributue are also discarded and
the object size is adjusted accordingly.
bgp4V2NlriPathAttrUnknown
brcdIp.3.5.1.1.9.1.25
Syntax: Octet String Read-only Specifies the path attributes that are not understood by the
implementation are presented. These path attributes use the
type, length, and value encoding from RFC 4271.
NOTE: An SNMP agent can truncate the objects that are less
than its maximum theoretical length of 4072 octets.
Name, OID, and syntax Access Description