■ Local BGP identifier—BGP router ID of the local router
■ routes—Total number of routes stored in the BGP routing table and amount
of memory consumed by routes. If several peers have advertised a route to
the same prefix, all routes are included in this count.
■ destinations—Number of routes to unique prefixes stored in the BGP routing
table and amount of memory consumed by routes. If several peers have
advertised a route to the same prefix, only the best route is included in this
count.
■ routes selected for route table installation—Number of routes in the BGP
routing table that have been inserted into the IP routing table, plus prefixes
for which there are currently no routes but which have had to be withdrawn
from peers to which these prefixes may been previously advertised
■ unicast/multicast routes selected for route table installation—Number of
unicast routes in the BGP routing table that have been inserted into the IP
routing table that are also available for use in the multicast view of the IP
routing table
■ unicast/multicast tunnel-usable routes selected for route table
installation—Number of unicast and multicast routes in the BGP routing table
that have been inserted into the IP routing table that are also available for
use in the IP tunnel routing table
■ tunnel-only routes selected for tunnel-route table installation—Number of
routes in the BGP routing table that have been inserted into the IP tunnel
routing table
■ path attribute entries—Number of distinct path attributes stored in BGP's
internal path attributes table. If BGP receives two routes for different prefixes
but with identical path attributes, BGP will create only one entry in its internal
path attribute table and share it between the two routes to conserve memory.
■ Local-RIB version—Number that is increased by one each time a route in
that RIB is added, removed or modified.
■ FIB version—Number that is increased by one each time BGP updates the
routes in the IP routing table based on changes in the local RIB. The FIB
version matches the local-RIB version when BGP has finished updating the
routes in the IP route table. The FIB version is less than the local-RIB version
when BGP is still in the process of updating the IP routing table.
■ Statistics baseline set—Timestamp indicating when the statistics baseline
was last set
■ Example
host1#show ip bgp 0.0.0.0 /0 fields intro
Local BGP identifier 192.168.254.79, local AS 6730
201058 routes (12063492 bytes)
201540 destinations (15317040 bytes) of which 201058 have a route
193909 routes selected for route tables installation
0 unicast/multicast routes selected for route table installation
0 unicast/multicast tunnel-usable routes selected for route table
installation
Monitoring BGP ■ 165
Chapter 1: Configuring BGP Routing
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