You do not configure a cluster ID, because router Salem is the only route reflector
in this cluster.
Figure 46: BGP Route Reflection
To configure router Concord as a route reflector:
host2(config)#router bgp 29
host2(config-router)#neighbor 10.7.1.3 remote-as 29
host2(config-router)#neighbor 10.7.1.3 route-reflector-client
host2(config-router)#neighbor 10.7.1.4 remote-as 29
host2(config-router)#neighbor 10.7.1.4 route-reflector-client
host2(config-router)#neighbor 10.7.6.2 remote-as 29
You do not configure a cluster ID, because router Concord is the only route reflector
in this cluster.
To configure router Acton as a route reflector:
host3(config)#router bgp 29
host3(config)#bgp cluster-id 23
host3(config-router)#neighbor 10.3.1.1 remote-as 29
host3(config-router)#neighbor 10.3.1.1 route-reflector-client
host3(config-router)#neighbor 10.1.2.3 remote-as 29
host3(config-router)#neighbor 10.1.2.3 route-reflector-client
host3(config-router)#neighbor 10.3.3.4 remote-as 29
host3(config-router)#neighbor 10.2.5.1 remote-as 29
Managing a Large-Scale AS â– 151
Chapter 1: Configuring BGP Routing