第3章 BGP基础

3.1 BGP邻居关系

1.R1配置OSPF

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 11.11.11.11 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255

2.R2配置OSPF

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0 
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255

3.配置R1的IBGP

[R1]bgp 12
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 2.2.2.2 as-number 12
[R1-bgp]peer 2.2.2.2 connect-interface LoopBack 0

4.配置R2的IBGP、EBGP

[R2]bgp 12
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 1.1.1.1 as-number 12
[R2-bgp]peer 1.1.1.1 connect-interface LoopBack 0
[R2-bgp]peer 23.1.1.3 as-number 300

5.配置R3的EBGP

[R3]bgp 300
[R3-bgp]router-id 3.3.3.3
[R3-bgp]peer 23.1.1.2 as-number 12

6.查看BGP邻居