48-高级路由：BGP 联邦实验

标签：multi   ocp   size   process   route   network   bcb   src   邻居   

R1(config-router)#neighbor 3.3.3.3 remote-as 65001
R1(config-router)#neighbor 3.3.3.3 update-source loopback 0
R1(config-router)#neighbor 3.3.3.3 next-hop-self

R1(config-router)#neighbor 14.1.1.4 remote-as 4

R2配置：
R2(config)#no router bgp 123
R2(config)#router bgp 65002
R2(config-router)#bgp router-id 2.2.2.2

R2(config-router)#bgp confederation identifier 123
R2(config-router)#bgp confederation peers 65001

R2(config-router)#neighbor 3.3.3.3 remote-as 65001
R2(config-router)#neighbor 3.3.3.3 update-source loopback 0
R2(config-router)#neighbor 3.3.3.3 ebgp-multihop

R3配置：
R3(config)#no router bgp 123
R3(config)#router bgp 65001
R3(config-router)#bgp router-id 3.3.3.3

R3(config-router)#bgp confederation identifier 123
R3(config-router)#bgp confederation peers 65002

R3(config-router)#neighbor 1.1.1.1 remote-as 65001
R3(config-router)#neighbor 1.1.1.1 update-source loopback 0

R3(config-router)#neighbor 2.2.2.2 remote-as 65002
R3(config-router)#neighbor 2.2.2.2 update-source loopback 0
R3(config-router)#neighbor 2.2.2.2 ebgp-multihop 255

四、验证：
R2#show ip bgp
Network Next Hop Metric LocPrf Weight Path
*> 4.4.4.0/24 1.1.1.1 0 100 0 (65001) 4 I

R4#show ip bgp summary
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
14.1.1.1 4 123 16 180 2 0 0 00:14:24

48-高级路由：BGP 联邦实验

标签：multi   ocp   size   process   route   network   bcb   src   邻居   

原文地址：http://blog.51cto.com/13856092/2137893