PLANET XGS3-24040 - Manual (Page 322)

Chapter 39 BGP
39-16
39.3 Configuration Examples of BGP
39.3.1 Examples 1: configure BGP neighbor
SwitchB, SwitchC and SwitchD are in AS200, SwitchA is in AS100. SwitchA and SwitchB share the same
network segment. SwitchB and SwitchD are not connected physically.
Figure 7-1 BGP Network Topological Map
The configurations of SwitchA are as following:
SwitchA(config)#router bgp 100
SwitchA(config-router-bgp)#neighbor 11.1.1.2 remote-as 200
SwitchA(config-router-bgp)#exit
The configurations of SwitchB are as following:
SwitchB(config)#router bgp 200
SwitchB(config-router-bgp)#network 11.0.0.0
SwitchB(config-router-bgp)#network 12.0.0.0
SwitchB(config-router-bgp)#network 13.0.0.0
SwitchB(config-router-bgp)#neighbor 11.1.1.1 remote-as 100
SwitchB(config-router-bgp)#neighbor 12.1.1.3 remote-as 200
SwitchB(config-router-bgp)#neighbor 13.1.1.4 remote-as 200
SwitchB(config-router-bgp)#exit
The configurations of SwitchC are as following:
SwitchC(config)#router bgp 200
SwitchC(config-router-bgp)#network 12.0.0.0
SwitchC(config-router-bgp)#network 13.0.0.0
SwitchC(config-router-bgp)#neighbor 12.1.1.2 remote-as 200
SwitchC(config-router-bgp)#neighbor 13.1.1.4 remote-as 200
SwitchC(config-router-bgp)#exit
Vlan1:11.1.1.1 Vlan1:11.1.1.2
Vlan1: 12.1.1.3 Vlan2: 13.1.1.3
Vlan2: 12.1.1.2 Vlan1: 13.1.1.4
SwitchA SwitchB SwitchD
SwitchC
AS100 AS200