Concept Guide

show ip bgp extcommunity-list
View information on all routes with Extended Community attributes.
Syntax
show ip bgp [ipv4 unicast] extcommunity-list [list name]
Parameters
ipv4 unicast (OPTIONAL) Enter the keywords ipv4 unicast to view information only related to
ipv4 unicast routes.
list name Enter the extended community list name you wish to view. The range is 140 characters.
Command Modes
• EXEC
• EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
To view the total number of COMMUNITY attributes found, use the show ip bgp summary command. The
text line above the route table states the number of COMMUNITY attributes found.
The show ip bgp community command without any parameters lists BGP routes with at least one BGP
community attribute and the output is the same as for the
show ip bgp command output.
IPv6 BGP Commands
IPv6 Border Gateway Protocol (IPv6 BGP) is supported on the switch.
Border gateway protocol (BGP) is an external gateway protocol that transmits interdomain routing information within and between
autonomous systems (AS). BGP version 4 (BGPv4) supports classless interdomain routing and the aggregation of routes and AS paths.
Basically, two routers (called neighbors or peers) exchange information including full routing tables and periodically send messages to
update those routing tables.
bgp soft-recong-backup
To avoid the peer from resending messages, use this command only when route-refresh is not negotiated.
Syntax
bgp soft-reconfig-backup
To return to the default setting, use the no bgp soft-reconfig-backup command.
Defaults Disabled
Command Modes ROUTER BGP
Supported Modes Full–Switch
Border Gateway Protocol IPv4 (BGPv4) 371