222
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
Switch(config)#ip community-list com2 permit 90
Switch(config)#exit
Switch#clear ip bgp 16.1.1.6 soft out
1.8.4.4 Examples 4: configure BGP confederation
The following is the configuration of an AS. As the picture illustrated, SwitchB and SwitchC
establish IBGP connection. SwitchD is affiliated to AS 20.SwitchB and SwitchC establish EBGP
of inner AS confederation. AS10 and AS20 form AS confederation with the AS number AS200;
SwitchA belongs to AS100, SwitchB may create EBGP connection by AS200.