BGP联邦综合实验

要求：

 1.AS1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，AS1的另一个环回为10.0.0.0/24，AS3的另一个环回为11.0.0.0/24

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

配置IP地址

R1

[R1]user-interface c0
[R1-ui-console0]idle-timeout 0 0

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.0.0.1 24
[R1-GigabitEthernet0/0/0]int l0
[R1-LoopBack0]ip add 192.168.1.1 24
[R1-LoopBack0]int l1
[R1-LoopBack1]ip add 10.0.0.1 24

R2

[R2]user-interface c0
[R2-ui-console0]idle-timeout 0 0

[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.0.0.2 24
[R2-GigabitEthernet0/0/0]int l0
[R2-LoopBack0]ip add 172.16.2.1 24
[R2]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 172.16.1.1 29
[R2-GigabitEthernet0/0/1]int g0/0/2
[R2-GigabitEthernet0/0/2]ip add 172.16.1.9 29

R3

[R3]user-interface c0
[R3-ui-console0]idle-timeout 0 0

[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.1.2 29
[R3-GigabitEthernet0/0/0]int l0
[R3-LoopBack0]ip add 172.16.3.1 24
[R3-LoopBack0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 172.16.1.17 29

R4

[R4]user-interface c0
[R4-ui-console0]idle-timeout 0 0

[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 172.16.1.18 29
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 172.16.1.25 29
[R4-GigabitEthernet0/0/1]int l0
[R4-LoopBack0]ip add 172.16.4.1 24

R5

[R5]user-interface c0
[R5-ui-console0]idle-timeout 0 0

[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 172.16.1.10 29
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 172.16.1.133 29
[R5-GigabitEthernet0/0/1]int l0
[R5-LoopBack0]ip add 172.16.5.1 24

R6

[R6]user-interface c0
[R6-ui-console0]idle-timeout 0 0

[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 172.16.1.34 29
[R6-GigabitEthernet0/0/0]int l0
[R6-LoopBack0]ip add 172.16.6.1 24
[R6-LoopBack0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add 172.16.1.41 29

R7

[R7]user-interface c0
[R7-ui-console0]idle-timeout 0 0

[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 172.16.1.42 29
[R7-GigabitEthernet0/0/0]int l0
[R7-LoopBack0]ip add 172.16.7.1 24
[R7-LoopBack0]int g0/0/1
[R7-GigabitEthernet0/0/1]ip add 172.16.1.26 29
[R7-GigabitEthernet0/0/1]int g0/0/2
[R7-GigabitEthernet0/0/2]ip add 78.0.0.1 24

R8

[R8]user-interface c0
[R8-ui-console0]idle-timeout 0 0

[R8]int g0/0/0
[R8-GigabitEthernet0/0/0]ip add 78.0.0.2 24
[R8-GigabitEthernet0/0/0]int l0
[R8-LoopBack0]ip add 192.168.2.1 24
[R8-LoopBack0]int l1
[R8-LoopBack1]ip add 11.0.0.1 24

在AS 2中启用OSPF协议

R2 

[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

[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

[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

[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

[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

[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

全部启用BGP协议并建立对等体

R1

[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

[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

[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

[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

[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

[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

[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

[R8]bgp 3   
[R8-bgp]router-id 8.8.8.8    
[R8-bgp]peer 78.0.0.1 as 2

发布路由信息 

R1

[R1]bgp 1
[R1-bgp]network 10.0.0.0 24

R8

[R8]bgp 3
[R8-bgp]network 11.0.0.0 24

破除IBGP之间的水平分割，配置路由反射器 

R3

[R3]bgp 64512    
[R3-bgp]peer 172.16.2.1 reflect-client 

R6

[R6]bgp 64513
[R6-bgp]peer 172.16.7.1 reflect-client

AS1与AS3环回互通AS1与AS3环回互通 

R1

[R1]int t0/0/0
[R1-Tunnel0/0/0]ip add 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

[R8]int t0/0/0
[R8-Tunnel0/0/0]ip add 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