Planet XGS3-24042 User Manual download pdf (Page 352)

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40.3.3 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 /jointfilesconvert/1771035/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 /jointfilesconvert/1771035/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 /jointfilesconvert/1771035/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

Switch(config-route-map)#match community com2

Switch(config-route-map)#set local-preference 500

Switch(config-route-map)#exit

Switch(config)#ip community-list com1 permit 100 200 300

Switch(config)#ip community-list com1 permit 900 901

Switch(config)#ip community-list com2 permit 88

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Planet XGS3-24042 User Manual Page 352

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