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Monitoring BGP Community Routes in the Community List
Purpose
Display all routes that are members of communities on the specified BGP community list. Report whether the indirect next hop of a route is unreachable; if not, display the IGP cost to the indirect next hop. Accepts regular expressions.
The show ip bgp community-list and show bgp ipv6 community-list commands display similar information.
Action
To display all routes that are members of communities in the specified BGP community list:
host1#show ip bgp community-list 1 fields peer communities Local router ID 192.168.1.153, local AS 100 72077 paths, 72077 distinct prefixes (5189544 bytes used) 72077 paths selected for route table installation 21627 path attribute entries (2957324 bytes used) Prefix Peer Communities 3.0.0.0/8 10.5.0.48 777:777 888:888 4.0.0.0/8 10.5.0.48 777:777 888:888 4.17.106.0/24 10.5.0.48 777:777 888:888 4.17.115.0/24 10.5.0.48 777:777 888:888 6.0.0.0/8 10.5.0.48 777:777 888:888 9.2.0.0/16 10.5.0.48 777:777 888:888 9.20.0.0/17 10.5.0.48 777:777 888:888 12.0.0.0/8 10.5.0.48 777:777 888:888
Meaning
Table 30 lists the show ip bgp community-list command output fields.
Table 30: show ip bgp community-list Output Fields
Field Name | Field Description |
|---|---|
Local router ID | BGP router ID of the local router |
local AS | Local autonomous system number |
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. |
paths | Total number of routes stored in the BGP routing table. If several peers have advertised a route to the same prefix, all routes are included in this count. |
distinct prefixes | Number of routes to unique prefixes stored in the BGP routing table. If several peers have advertised a route to the same prefix, only the best route is included in this count. |
paths selected for route table installation | Number of routes in the BGP routing table that have been inserted into the IP 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. |
Prefix | Prefix for the routing table entry |
Peer | IP address of BGP peer |
Communities | Community number in AA:NN format:
|
