![图片[1]-3.4 用group建立邻居管理-大赛人网](https://www.dsrw.com/wp-content/uploads/2023/03/图片1-28-1024x258.png)
1.R1配置,宣告11.11.11.11/32到BGP
[R1]bgp 123
[R1]router-id 1.1.1.1
[R1-bgp]group IBGP
[R1-bgp]peer IBGP connect-interface LoopBack 0
[R1-bgp]peer 2.2.2.2 group IBGP
[R1-bgp]peer 3.3.3.3 group IBGP
[R1-bgp]network 11.11.11.11 32
2.R2配置
[R2]bgp 123
[R2-bgp]router-id 2.2.2.2
[R2-bgp]group IBGP
[R2-bgp]peer IBGP connect-interface LoopBack 0
[R2-bgp]peer 1.1.1.1 group IBGP
[R2-bgp]peer 3.3.3.3 group IBGP
3.R3配置
[R3]bgp 123
[R3-bgp]router-id 3.3.3.3
[R3-bgp]group IBGP
[R3-bgp]peer IBGP connect-interface LoopBack 0
[R3-bgp]peer IBGP next-hop-local
[R3-bgp]peer 1.1.1.1 group IBGP
[R3-bgp]peer 2.2.2.2 group IBGP
[R3-bgp] peer 34.1.1.4 as-number 400
4.R4配置
[R4]bgp 400
[R4-bgp]router-id 4.4.4.4
[R4-bgp]peer 34.1.1.3 as-number 123
[R4-bgp]network 4.4.4.4 255.255.255.255
5.R1、R4查看BGP路由
[R1]display bgp routing-table
*>i 4.4.4.4/32 3.3.3.3 0 100 0 400i
*> 11.11.11.11/32 0.0.0.0 0 0 i
[R4]display bgp routing-table
*> 4.4.4.4/32 0.0.0.0 0 0 i
*> 11.11.11.11/32 34.1.1.3 0 123i
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