BGP综合实验

一、实验要求

1.S1存在两个环回，一个地址为192.168.1.0/24该地址不能在任何协议中宣告
AS3中存在两个环回，一个地址为192.168.2.0/24该地址不能在任何协议中宣告，最终要求这两个环回可以互相通讯
2.整个AS2的IP地址为172.16.0.0/16，请合理划分
3.AS间的骨干链路IP地址随意定制
4.使用BGP协议让整个网络所有设备的环回可以互相访问
5.减少路由条目数量，避免环路出现

二、实验拓扑

 三、实验配置

1.配置OSPF

[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 0
[r2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]a 0
[r3-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]a 0
[r4-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]a 0
[r5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]a 0
[r6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]a 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

2.配置BGP协议

[r1]bgp 1 
[r1-bgp]route-select
[r1-bgp]router-id 1.1.1.1  
[r1-bgp]peer 12.0.0.2 as 2

[r2]bgp 64512  
[r2-bgp]route-select
[r2-bgp]router-id 2.2.2.2  
[r2-bgp]confederation id 2   
[r2-bgp]confederation peer-as 64513
[r2-bgp]peer 12.0.0.1 as 1  
[r2-bgp]peer 172.16.3.1 as 64512   
[r2-bgp]peer 172.16.3.1 connect-interface LoopBack 0   
[r2-bgp]peer 172.16.5.1 as 64513  
[r2-bgp]peer 172.16.5.1 connect-interface LoopBack 0
[r2-bgp]peer 172.16.5.1 ebgp-max-hop 2  
[r2-bgp]peer 172.16.3.1 next-hop-local
[r2-bgp]peer 172.16.5.1 next-hop-local

[r3]bgp 64512
[r3-bgp]router-id 3.3.3.3 
[r3-bgp]confederation id 2
[r3-bgp]peer 172.16.2.1 as 64512  
[r3-bgp]peer 172.16.2.1 connect-interface LoopBack 0 
[r3-bgp]peer 172.16.4.1 as 64512 
[r3-bgp]peer 172.16.4.1 connect-interface LoopBack 0

[r4]bgp 64512
[r4-bgp]router-id 4.4.4.4 
[r4-bgp]confederation id 2
[r4-bgp]confederation peer-as 64513
[r4-bgp]peer 172.16.3.1 as 64512
[r4-bgp]peer 172.16.3.1 connect-interface LoopBack 0
[r4-bgp]peer 172.16.7.1 as 64513
[r4-bgp]peer 172.16.7.1 connect-interface LoopBack 0
[r4-bgp]peer 172.16.7.1 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 172.16.2.1 as 64512
[r5-bgp]peer 172.16.2.1 connect-interface LoopBack 0
[r5-bgp]peer 172.16.2.1 ebgp-max-hop 2
[r5-bgp]peer 172.16.6.1 as 64513
[r5-bgp]peer 172.16.6.1 connect-interface LoopBack 0

[r6]bgp 64513
[r6-bgp]router-id 6.6.6.6   
[r6-bgp]confederation id 2
[r6-bgp]peer 172.16.5.1 as 64513  
[r6-bgp]peer 172.16.5.1 connect-interface LoopBack 0
[r6-bgp]peer 172.16.7.1 as 64513
[r6-bgp]peer 172.16.7.1 connect-interface LoopBack 0

[r7]bgp 64513
[r7-bgp]router-id 7.7.7.7   
[r7-bgp]confederation id 2
[r7-bgp]confederation peer-as 64512 
[r7-bgp]peer 172.16.6.1 as 64513
[r7-bgp]peer 172.16.6.1 connect-interface LoopBack 0  
[r7-bgp]peer 172.16.4.1 as 64512 
[r7-bgp]peer 172.16.4.1 connect-interface LoopBack 0
[r7-bgp]peer 172.16.4.1 ebgp-max-hop 2
[r7-bgp]peer 78.0.0.2 as 3
[r7-bgp]peer 172.16.4.1 next-hop-local
[r7-bgp]peer 172.16.6.1 next-hop-local

[r8]bgp 3   
[r8-bgp]router-id 8.8.8.8    
[r8-bgp]peer 78.0.0.1 as 2

3.宣告路由

[r1]bgp 1
[r1-bgp]network 10.0.0.0 24

[r8]bgp 3
[r8-bgp]network 11.0.0.0 24

4.配置BGP反射器

[r3]bgp 64512    
[r3-bgp]peer 172.16.2.1 reflect-client 

[r6]bgp 64513
[r6-bgp]peer 172.16.7.1 reflect-client

5.建立GRE隧道

[r1]int t0/0/0
[r1-Tunnel0/0/0]ip a 192.168.10.1 24  
[r1-Tunnel0/0/0]tunnel-protocol gre  
[r1-Tunnel0/0/0]source 10.0.0.1
[r1-Tunnel0/0/0]destination 11.0.0.1  
[r1]ip route-static 192.168.1.0 24 99.0.0.2


[r8]int t0/0/0
[r8-Tunnel0/0/0]ip a 192.168.10.2 24 
[r8-Tunnel0/0/0]tunnel-protocol gre  
[r8-Tunnel0/0/0]source 11.0.0.1
[r8-Tunnel0/0/0]destination 10.0.0.1
[r8]ip route-static 192.168.2.0 24 99.0.0.1