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BGP综合实验

news 2026/4/1 8:24:08

一、实验要求

二、实验步骤

1.配置IP地址

[R3-GigabitEthernet0/0/0]int l0
[R3-LoopBack0]ip add 3.3.3.3 32
[R3-LoopBack0]int l1
[R3-LoopBack1]ip add 172.16.3.3 24

[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 172.16.1.6 30
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 172.16.1.9 30
[R4-GigabitEthernet0/0/1]int l0
[R4-LoopBack0]ip add 4.4.4.4 32
[R4-LoopBack0]int l1
[R4-LoopBack1]ip add 172.16.4.4 24

[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 172.16.1.22 30
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 172.16.1.17 30
[R5-GigabitEthernet0/0/1]int l0
[R5-LoopBack0]ip add 5.5.5.5 32
[R5-LoopBack0]int l1
[R5-LoopBack1]ip add 172.16.5.5 24

[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 172.16.1.18 30
[R6-GigabitEthernet0/0/0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add 172.16.1.13 30
[R6-GigabitEthernet0/0/1]int l0
[R6-LoopBack0]ip add 6.6.6.6 32
[R6-LoopBack0]int l1
[R6-LoopBack1]ip add 172.16.6.6 24

[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 172.16.1.14 30
[R7-GigabitEthernet0/0/0]int g0/0/1
[R7-GigabitEthernet0/0/1]ip add 172.16.1.10 30
[R7-GigabitEthernet0/0/1]int g0/0/2
[R7-GigabitEthernet0/0/2]ip add 34.1.1.7 24
[R7-GigabitEthernet0/0/2]int l0
[R7-LoopBack0]ip add 7.7.7.7 32
[R7-LoopBack0]int l1
[R7-LoopBack1]ip add 172.16.7.7 24

[R8]int g0/0/0
[R8-GigabitEthernet0/0/0]ip add 34.1.1.8 24
[R8-GigabitEthernet0/0/0]int l0
[R8-LoopBack0]ip add 8.8.8.8 32
[R8-LoopBack0]int l1
[R8-LoopBack1]ip add 192.168.2.8 24
2.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 172.16.1.20 0.0.0.3
[R2-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.3

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.3
[R3-ospf-1-area-0.0.0.0]network 172.16.1.4 0.0.0.3
[R3-ospf-1-area-0.0.0.0]network 172.16.3.0 0.0.0.255

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]network 172.16.1.4 0.0.0.3
[R4-ospf-1-area-0.0.0.0]network 172.16.1.8 0.0.0.3
[R4-ospf-1-area-0.0.0.0]network 172.16.4.0 0.0.0.255

[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 5.5.5.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]network 172.16.1.20 0.0.0.3
[R5-ospf-1-area-0.0.0.0]network 172.16.1.16 0.0.0.3
[R5-ospf-1-area-0.0.0.0]network 172.16.5.0 0.0.0.255

[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 6.6.6.6 0.0.0.0
[R6-ospf-1-area-0.0.0.0]network 172.16.1.16 0.0.0.3
[R6-ospf-1-area-0.0.0.0]network 172.16.1.12 0.0.0.3
[R6-ospf-1-area-0.0.0.0]network 172.16.6.0 0.0.0.255

[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]area 0
[R7-ospf-1-area-0.0.0.0]network 7.7.7.7 0.0.0.0
[R7-ospf-1-area-0.0.0.0]network 172.16.1.12 0.0.0.3
[R7-ospf-1-area-0.0.0.0]network 172.16.1.8 0.0.0.3
[R7-ospf-1-area-0.0.0.0]network 172.16.7.0 0.0.0.255
3.配置BGP

[R1]bgp 1
[R1-bgp]peer 12.1.1.2 as-number 2

[R2]bgp 64512
[R2-bgp]confederation id 2
[R2-bgp]confederation peer-as 64513
[R2-bgp]peer 12.1.1.1 as-number 1
[R2-bgp]peer 3.3.3.3 as-number 64512
[R2-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R2-bgp]peer 3.3.3.3 next-hop-local
[R2-bgp]peer 172.16.1.22 as-number 64513
[R2-bgp]peer 172.16.1.22 next-hop-local

[R3]bgp 64512
[R3-bgp]confederation id 2
[R3-bgp]confederation peer-as 64513
[R3-bgp]peer 2.2.2.2 as-number 64512
[R3-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R3-bgp]peer 4.4.4.4 as-number 64512
[R3-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[R4]bgp 64512
[R4-bgp]confederation id 2
[R4-bgp]confederation peer-as 64513
[R4-bgp]peer 3.3.3.3 as-number 64512
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0

[R5]bgp 64513
[R5-bgp]confederation id 2
[R5-bgp]confederation peer-as 64512
[R5-bgp]peer 172.16.1.21 as-number 64512
[R5-bgp]peer 172.16.1.21 next-hop-local
[R5-bgp]peer 6.6.6.6 as-number 64513
[R5-bgp]peer 6.6.6.6 connect-interface LoopBack 0
[R5-bgp]peer 6.6.6.6 next-hop-local

[R6]bgp 64513
[R6-bgp]confederation id 2
[R6-bgp]confederation peer-as 64512
[R6-bgp]peer 5.5.5.5 as-number 64513
[R6-bgp]peer 5.5.5.5 connect-interface LoopBack 0
[R6-bgp]peer 7.7.7.7 as-number 64513
[R6-bgp]peer 7.7.7.7 connect-interface LoopBack 0

[R7]bgp 64513
[R7-bgp]confederation id 2
[R7-bgp]confederation peer-as 64512
[R7-bgp]peer 6.6.6.6 as-number 64513
[R7-bgp]peer 6.6.6.6 connect-interface LoopBack 0
[R7-bgp]peer 6.6.6.6 next-hop-local
[R7-bgp]peer 34.1.1.8 as-number 3

[R8]bgp 3
[R8-bgp]peer 34.1.1.7 as-number 2
4.宣告业务网段

[R1]bgp 1
[R1-bgp]network 1.1.1.1 32

[R3]bgp 64512
[R3-bgp]net 172.16.3.3 24

[R4]bgp 64512
[R4-bgp]net 172.16.4.4 24

[R5]bgp 64513
[R5-bgp]net 172.16.5.5 24

[R6]bgp 64513
[R6-bgp]net 172.16.6.6 24

[R7]bgp 64513
[R7-bgp]net 172.16.7.7 24

[R8]bgp 3
[R8-bgp]net 8.8.8.8 32
5.配置反射器

[R3]bgp 64512
[R3-bgp]peer 2.2.2.2 reflect-client //在反射器上配置反射客户机
[R3-bgp]peer 4.4.4.4 reflect-client
[R3-bgp]reflector cluster-id 3.3.3.3//配置反射器集群id

[R6]bgp 64513
[R6-bgp]peer 5.5.5.5 reflect-client
[R6-bgp]peer 7.7.7.7 reflect-client
[R6-bgp]reflector cluster-id 6.6.6.6
6.减少路由条目数量，避免环路出现

[R2-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set

[R7-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set

7.使用GRE隧道

[R1]int Tunnel 0/0/0 //进入隧道口
[R1-Tunnel0/0/0]ip add 10.10.10.1 24 //配置隧道地址
[R1-Tunnel0/0/0]tunnel-protocol gre //指定协议
[R1-Tunnel0/0/0]source 1.1.1.1 //隧道源公网ip
[R1-Tunnel0/0/0]destination 8.8.8.8 //s隧道目的公网接口ip

[R8]int Tunnel 0/0/0
[R8-Tunnel0/0/0]ip add 10.10.10.8 24
[R8-Tunnel0/0/0]tunnel-protocol gre
[R8-Tunnel0/0/0]source 8.8.8.8
[R8-Tunnel0/0/0]destination 1.1.1.1
[R8]ip route-static 192.168.1.0 24 Tunnel 0/0/0

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