BGP实验

各个路由器配置IP地址
[r1]int lo0
[r1-LoopBack0]ip add 1.1.1.1 32
[r1-LoopBack0]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 12.1.1.1 24

[r2]int g0/0/1
[r2-GigabitEthernet0/0/1]ip add 12.1.1.2 24.
[r2-GigabitEthernet0/0/1]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 23.1.1.1 24
[r2-GigabitEthernet0/0/0]int g0/0/2
[r2-GigabitEthernet0/0/2]ip add 25.1.1.1 24
[r2]int lo0
[r2-LoopBack0]ip add 2.2.2.2 32

R2-R7之间启用OSPF协议
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]netw
[r2-ospf-1-area-0.0.0.0]network 12.1.1.2 0.0.0.0
[r2-ospf-1-area-0.0.0.0]netw
[r2-ospf-1-area-0.0.0.0]network 23.1.1.1 0.0.0.0
[r2-ospf-1-area-0.0.0.0]netw
[r2-ospf-1-area-0.0.0.0]network 25.1.1.1 0.0.0.0
[r2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

R1-R8启用BGP
[r1]bgp 100
[r1-bgp]rout
[r1-bgp]router
[r1-bgp]router-id 1.1.1.1
[r1-bgp]peer 12.1.1.2 as
[r1-bgp]peer 12.1.1.2 as-number 200
[r1-bgp]bgp 100
[r1-bgp]netw
[r1-bgp]network 1.1.1.1 32

[r3-bgp]network 3.3.3.3 32

[r4]bgp 234
[r4-bgp]router-id 4.4.4.4
[r4-bgp]con
[r4-bgp]confederation i
[r4-bgp]confederation id 200
[r4-bgp]peer 3.3.3.3 as-
[r4-bgp]peer 3.3.3.3 as-number 234
[r4-bgp]peer 3.3.3.3 connect-interface lo0
[r4-bgp]peer 3.3.3.3 next-hop-local
[r4]bgp 234
[r4-bgp]confederation peer-as 567
[r4-bgp]peer 7.7.7.7 as-
[r4-bgp]peer 7.7.7.7 as-number 567
[r4-bgp]peer 7.7.7.7 con
[r4-bgp]peer 7.7.7.7 connect-interface lo0
[r4-bgp]peer 7.7.7.7 e
[r4-bgp]peer 7.7.7.7 ebgp-max-hop
[r4-bgp]network 4.4.4.4 32

[r5-bgp]network 5.5.5.5 32
查看BGP邻居关系

在R3 R6上做路由反射器
[r3-bgp]peer 2.2.2.2 reflect-client
[r6-bgp]peer 7.7.7.7 reflect-client
R1-R8之间通信