581
specified route to all the neighbors.
SwitchB(config-router-bgp)#aggregate 193.0.0.0/24 summary-only
14.8.4.3 Examples 3: configure BGP community attributes
In the following sample, “route map set-community” is used for the outgoing update
to neighbor 16.1.1.6. By accessing to route in table 1 to configure special community
value to “1111”, other can be announced normally.
Switch(config)#router bgp 100
Switch(config-router-bgp)#neighbor 16.1.1.6 remote-as 200
Switch(config-router-bgp)#neighbor 16.1.1.6 route-map set-community out
Switch(config-router-bgp)#exit
Switch(config)#route-map set-community permit 10
Switch(config-route-map)#match address 1
Switch(config-route-map)#set community 1111
Switch(config-route-map)#exit
Switch(config)#route-map set-community permit 20
Switch(config-route-map)#match address 2
Switch(config-route-map)#exit
Switch(config)#access-list 1 permit 11.1.0.0 0.0.255.255
Switch(config)#access-list 2 permit 0.0.0.0 255.255.255.255
Switch(config)#exit
Switch#clear ip bgp 16.1.1.6 soft out
In the following sample, configure the MED local preference of the routes from
neighbor 16.1.1.6 selectively according to the route community value. All the routes that
match the community list will set MED as 2000, community list com1 permits the route
with community value “100 200 300”or”900 901” to pass. This route may have other
community attributes. All the routes that pass community list com2 will set the local
preference as 500. But the route that can’t pass both com1 and com2 will be rejected.
Switch(config)#router bgp 100
Switch(config-router-bgp)#neighbor 16.1.1.6 remote-as 200
Switch(config-router-bgp)#neighbor 16.1.1.6 route-map match-community in
Switch(config-router-bgp)#exit
Switch(config)#route-map match-community permit 10
Switch(config-route-map)#match community com1
Switch(config-route-map)#set metric 2000
Switch(config-route-map)#exit
Switch(config)#route-map match-community permit 20
