BGP配置实验详解-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_71988966/article/details/126049616

本文档详细介绍了如何根据拓扑图配置BGP。实验涉及R1到R5路由器的IP和环回地址设置，静态路由及RIP配置，并逐步建立了EBGP关系。通过R1至R5的配置检测，确保了BGP连接的正确性。

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实验要求

按照拓扑图配置bgp

实验拓扑

配置

IP及环回

[R1]int g 0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[R1-GigabitEthernet0/0/0]int l0
[R1-LoopBack0]ip add 1.1.1.1 24

[R2]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/0]int g 0
[R2-GigabitEthernet0/0/0]int g 0/0/1
[R2-GigabitEthernet0/0/1]ip add 23.1.1.2 24
[R2-GigabitEthernet0/0/1]in l0
[R2-LoopBack0] add 2.2.2.2 24

[R3]int g 0/0/0
[R3-GigabitEthernet0/0/0]ip add 23.1.1.3 24
[R3-GigabitEthernet0/0/0]int g 0/0/1
[R3-GigabitEthernet0/0/1]ip add 34.1.1.3 24
[R3-GigabitEthernet0/0/1]int l0
[R3-LoopBack0]ip add 3.3.3.3 24

[R4]INT G0/0/0
[R4-GigabitEthernet0/0/0]ip add 34.1.1.4 24
[R4-GigabitEthernet0/0/0]int g 0/0/1
[R4-GigabitEthernet0/0/1]ip add 45.1.1.4 24
[R4-GigabitEthernet0/0/1]int g 0/0/2
[R4-GigabitEthernet0/0/2]ip add 54.1.1.4 24
[R4-GigabitEthernet0/0/2]int l0
[R4-LoopBack0]ip add 4.4.4.4 24

[R5]int g 0/0/0
[R5-GigabitEthernet0/0/0]ip add 45.1.1.5 24
[R5-GigabitEthernet0/0/0]int g 0/0/1
[R5-GigabitEthernet0/0/1]ip add 54.1.1.5 24
[R5-GigabitEthernet0/0/1]int l0
[R5-LoopBack0]ip add 5.5.5.5 24

配置静态路由(R1R2、R4R5)及rip(R2R3R4)

[R1]ip route-static 2.2.2.0 24 12.1.1.2

[R2]ip route-static 1.1.1.0 24 12.1.1.1

[R2]rip 1
[R2-rip-1]version 2
[R2-rip-1]network 2.0.0.0
[R2-rip-1]network 23.0.0.0

[R3]rip 1
[R3-rip-1]version 2
[R3-rip-1]network 3.0.0.0
[R3-rip-1]network 23.0.0.0
[R3-rip-1]network 34.0.0.0

[R4]ip route-static 5.5.5.0 24 45.1.1.5
[R4]ip route-static 5.5.5.0 24 54.1.1.5

[R4]rip 1
[R4-rip-1]version 2
[R4-rip-1]network 4.0.0.0
[R4-rip-1]network 34.0.0.0

[R5]ip route-static 4.4.4.0 24 45.1.1.4
[R5]ip route-static 4.4.4.0 24 54.1.1.4

建立EBGP关系

[R1]bgp 1
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 2.2.2.2 as-number 2
[R1-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R1-bgp]peer 2.2.2.2 ebgp-max-hop 2

[R2]bgp 2
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 1.1.1.1 as-number 1
[R2-bgp]peer 1.1.1.1 connect-interface LoopBack 0
[R2-bgp]peer 1.1.1.1 ebgp-max-hop 2

[R2-bgp]peer 3.3.3.3 as-number 2
[R2-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R2-bgp]peer 3.3.3.3 next-hop-local
[R2-bgp]peer 4.4.4.4 as-number 2
[R2-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R2-bgp]peer 4.4.4.4 next-hop-local

[R3]bgp 2
[R3-bgp]peer 2.2.2.2 as-number 2
[R3-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R3-bgp]peer 2.2.2.2 next-hop-local
[R3-bgp]peer 4.4.4.4 as-number 2
[R3-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R3-bgp]peer 4.4.4.4 next-hop-local

[R4-bgp]peer 2.2.2.2 as-number 2                 
[R4-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R4-bgp]peer 2.2.2.2 next-hop-local
[R4-bgp]peer 3.3.3.3 as-number 2
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R4-bgp]peer 3.3.3.3 next-hop-local 


[R4]BGP 2
[R4-bgp]peer 5.5.5.5 as-number 3
[R4-bgp]peer 5.5.5.5 connect-interface LoopBack 0
[R4-bgp]peer 5.5.5.5 ebgp-max-hop 2

[R5]bgp 3
[R5-bgp]peer 4.4.4.4 as-number 2
[R5-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R5-bgp]peer 4.4.4.4 ebgp-max-hop 2

结果检测

BGP 实验