bgp综合实验

1.地址规划

2.配置IP地址

[R2-LoopBack0]ip add 172.16.1.2 32
[R2-LoopBack0]int l 1
[R2-LoopBack1]ip add 172.16.2.1 24
[R2]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/0]int g 0/0/1
[R2-GigabitEthernet0/0/1]ip add 172.16.0.1 30
[R2-GigabitEthernet0/0/1]int g 0/0/2
[R2-GigabitEthernet0/0/2]ip add 172.16.0.9 30
其他同理

3.AS2配上OSPF

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R2到R7同理
注意区分用户网段
进入环回1更改类型
[R2-LoopBack1]ospf network-type broadcast
其他同理

4.启bgp

[R1]bgp 1
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 12.1.1.2 as-number 2

[R2]bgp 64512
[R2-bgp]router-id 2.2.2.2
[R2-bgp]confederation id 2
[R2-bgp]confederation peer-as 64513
[R2-bgp]peer 12.1.1.1 as-number 1
[R2-bgp]peer 172.16.1.3 as-number 64512
[R2-bgp]peer 172.16.1.3 connect-interface LoopBack 0
[R2-bgp]peer 172.16.1.5 as-number 64513
[R2-bgp]peer 172.16.1.5 connect-interface LoopBack 0
[R2-bgp]peer 172.16.1.5 ebgp-max-hop 2

[R3]bgp 64512
[R3-bgp]router-id 3.3.3.3
[R3-bgp]confederation id 2
[R3-bgp]peer 172.16.1.2 as-number 64512
[R3-bgp]peer 172.16.1.4 as-number 64512
[R3-bgp]peer 172.16.1.2 connect-interface LoopBack 0
[R3-bgp]peer 172.16.1.4 connect-interface LoopBack 0

[R4]bgp 64512
[R4-bgp]router-id 4.4.4.4
[R4-bgp]confederation id 2
[R4-bgp]peer 172.16.1.3 as-number 64512
[R4-bgp]peer 172.16.1.3 connect-interface LoopBack 0
[R4-bgp]confederation peer-as 64513
[R4-bgp]peer 172.16.1.7 as-number 64513
[R4-bgp]peer 172.16.1.7 connect-interface LoopBack 0
[R4-bgp]peer 172.16.1.7 ebgp-max-hop 2

[R5]bgp 64513
[R5-bgp]router-id 5.5.5.5
[R5-bgp]confederation id 2
[R5-bgp]confederation peer-as 64512
[R5-bgp]peer 172.16.1.2 as-number 64512
[R5-bgp]peer 172.16.1.2 connect-interface LoopBack 0
[R5-bgp]peer 172.16.1.2 ebgp-max-hop 2
[R5-bgp]peer 172.16.1.6 as-number 64513
[R5-bgp]peer 172.16.1.6 connect-interface LoopBack 0

[R6]bgp 64513
[R6-bgp]router-id 6.6.6.6
[R6-bgp]peer 172.16.1.5 as-number 64513
[R6-bgp]peer 172.16.1.5 connect-interface LoopBack 0
[R6-bgp]peer 172.16.1.7 as-number 64513
[R6-bgp]peer 172.16.1.7 connect-interface LoopBack 0
[R6-bgp]confederation id 2

[R7]bgp 64513
[R7-bgp]confederation id 2
[R7-bgp]confederation peer-as 64512
[R7-bgp]router-id 7.7.7.7
[R7-bgp]peer 172.16.1.6 as-number 64513
[R7-bgp]peer 172.16.1.6 connect-interface LoopBack 0
[R7-bgp]peer 172.16.1.4 as-number 64512
[R7-bgp]peer 172.16.1.4 ebgp-max-hop 2
[R7-bgp]peer 172.16.1.4 connect-interface LoopBack 0
[R7-bgp]peer 78.1.1.2 as-number 3

[R8]bgp 3
[R8-bgp]router-id 8.8.8.8
[R8-bgp]peer 78.1.1.1 as-number 2

5.宣告环回

[R1]bgp 1
[R1-bgp]network 1.1.1.0 24

[R2]bgp 64512
[R2-bgp]peer 172.16.1.3 next-hop-local
[R2-bgp]peer 172.16.1.5 next-hop-local

R3 R6 R5优
做反射器
[R3]bgp 64512
[R3-bgp]peer 172.16.1.4 reflect-client
[R6]bgp 64513
[R6-bgp]peer 172.16.1.7 reflect-client

R8同理
[R8]bgp 3
[R8-bgp]network 8.8.8.0 24

[R7]bgp 64513
[R7-bgp]peer 172.16.1.4 next-hop-local
[R7-bgp]peer 172.16.1.6 next-hop-local
测试：

汇总

设置空接口
[R2]ip route-static 172.16.0.0 21 NULL 0
[R2]bgp 64512
[R2-bgp]network 172.16.0.0 21

[R7]ip route-static 172.16.0.0 21 NULL 0
[R7]bgp 64513
[R7-bgp]network 172.16.0.0 21