BGP综合实验

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

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

第一步：子网划分

172.16.0.0 16

172.16.0.0 24——网段

172.16.0.4 30

172.16.0.8 30

172.16.0.12 30

172.16.0.16 30

172.16.0.20 30

172.16.1.2 24——建邻环回

172.16.1.3 24

172.16.1.4 24

172.16.1.5 24

172.16.1.6 24

172.16.1.7 24

172.16.2.1 24——R2环回

172.16.3.1 24——R3

172.16.4.1 24——R4

172.16.4.1 24——R5

172.16.5.1 24——R6

172.16.6.1 24——R7

172.16.7.1 24——R8

第二步：配置IP

R1

[R1-LoopBack0]ip address 1.1.1.1 24

[R1-LoopBack1]ip address 192.168.1.1 24

[R1-GigabitEthernet0/0/0]ip address 12.1.1.1 24

R2

[R2-LoopBack0]ip address 172.16.1.2 24

[R2-LoopBack1]ip address 172.16.2.1 24

[R2-GigabitEthernet0/0/0]ip address 12.1.1.2 24

[R2-GigabitEthernet0/0/1]ip address 172.16.0.1 30

[R2-GigabitEthernet0/0/2]ip address 172.16.0.13 30

R3

[R3-LoopBack0]ip address 172.16.1.3 24

[R3-LoopBack1]ip address 172.16.3.1 24

[R3-GigabitEthernet0/0/0]ip address 172.16.0.2 30

[R3-GigabitEthernet0/0/1]ip address 172.16.0.5 30

R4

[R4-LoopBack0]ip address 172.16.1.4 24

[R4-LoopBack1]ip address 172.16.4.1 24

[R4-GigabitEthernet0/0/0]ip address 172.16.0.6 30

[R4-GigabitEthernet0/0/1]ip address 172.16.0.9 30

R5

[R5-LoopBack0]ip address 172.16.1.5 24

[R5-LoopBack1]ip address 172.16.5.1 24

[R5-GigabitEthernet0/0/0]ip address 172.16.0.14 30

[R5-GigabitEthernet0/0/1]ip address 172.16.0.17 30

R6

[R6-LoopBack0]ip address 172.16.1.6 24

[R6-LoopBack1]ip address 172.16.6.1 24

[R6-GigabitEthernet0/0/0]ip address 172.16.0.18 30

[R6-GigabitEthernet0/0/1]ip address 172.16.0.21 30

R7

[R7-LoopBack0]ip address 172.16.1.7 24

[R7-LoopBack1]ip address 172.16.7.1 24

[R7-GigabitEthernet0/0/0]ip address 172.16.0.22 30

[R7-GigabitEthernet0/0/1]ip address 172.16.0.10 30

[R7-GigabitEthernet0/0/2]ip address 78.1.1.7 24

R8

[R8-LoopBack0]ip address 8.8.8.8 24

[R8-LoopBack1]ip address 192.168.2.1 24

[R8-GigabitEthernet0/0/0]ip address 78.1.1.8 24

配置静态路由

[R1]ip route-static 172.16.1.2 24 12.1.1.2

[R2]ip route-static 1.1.1.1 24 12.1.1.1

[R7]ip route-static 8.8.8.8 24 78.1.1.8

[R8]ip route-static 172.16.1.7 24 78.1.1.7

第三步：启动OSPF协议

[R2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R3-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R4-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

更改类型

[R2-LoopBack1]ospf network-type broadcast

[R3-LoopBack1]ospf network-type broadcast

[R4-LoopBack1]ospf network-type broadcast

[R5-LoopBack1]ospf network-type broadcast

[R6-LoopBack1]ospf network-type broadcast

[R7-LoopBack1]ospf network-type broadcast

第四步：建立BGP

[R1]bgp 1

[R1-bgp]router-id 1.1.1.1

[R1-bgp]peer 12.1.1.2 as-number 2

R2

[R2]bgp 64512

[R2-bgp]router-id 172.16.1.2

[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

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

R3

[R3]bgp 64512

[R3-bgp]router-id 172.16.1.3         

[R3-bgp]confederation id 2

[R3-bgp]peer 172.16.1.2 as-number 64512

[R3-bgp]peer 172.16.1.2 connect-interface LoopBack 0

[R3-bgp]peer 172.16.1.4 as-number 64512

[R3-bgp]peer 172.16.1.4 connect-interface LoopBack 0

R4

[R4]bgp 64512

[R4-bgp]router-id 172.16.1.4        

[R4-bgp]confederation id 2

[R4-bgp]confederation peer-as 64513

[R4-bgp]peer 172.16.1.3 as-number 64512

[R4-bgp]peer 172.16.1.3 connect-interface LoopBack 0

[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

[R5]bgp 64513

[R5-bgp]router-id 172.16.1.5        

[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

[R6]bgp 64513

[R6-bgp]router-id 172.16.1.6        

[R6-bgp]confederation id 2

[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

R7

[R7]bgp 64513

[R7-bgp]router-id 172.16.1.7

[R7-bgp]confederation id 2

[R7-bgp]confederation peer-as 64512

[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 connect-interface LoopBack 0

[R7-bgp]peer 172.16.1.4 ebgp-max-hop 2

[R7-bgp]peer 78.1.1.8 as-number 3

[R7-bgp]peer 172.16.1.6 next-hop-local

R8

[R8]bgp 3

[R8-bgp]router-id 8.8.8.8

[R8-bgp]peer 78.1.1.7 as-number 2

发布路由信息

[R1]bgp 1

[R1-bgp]ne        

[R1-bgp]network 1.1.1.1 24

[R8]bgp 3

[R8-bgp]nr        

[R8-bgp]ne        

[R8-bgp]network 8.8.8.8 24

第五步：配置路由反射器

[R3]bgp 64512

[R3-bgp]pe        

[R3-bgp]peer 172.16.1.2 re        

[R3-bgp]peer 172.16.1.2 reflect-client

[R6]bgp 64513

[R6-bgp]pe        

[R6-bgp]peer 172.16.1.7 re        

[R6-bgp]peer 172.16.1.7 reflect-client

使用BGP协议让整个网络所有设备的环回可以互相访问

第六步：减少路由条目数量，避免环路出现

宣告

[R2-bgp]network 172.16.2.0 24

[R2-bgp]network 172.16.3.0 24

[R2-bgp]network 172.16.4.0 24

[R2-bgp]network 172.16.5.0 24

[R2-bgp]network 172.16.6.0 24

[R2-bgp]network 172.16.7.0 24

[R2-bgp]aggregate 172.16.0.0 21 detail-suppressed

做空接口

[R2]ip route-static 172.16.0.0 21 NULL 0

[R2]ne        

[R2]netconf

[R2]bg        

[R2]bgp 64512

[R2-bgp]ne        

[R2-bgp]network 172.16.0.0 21

[R7]ip route-static 172.16.0.0 22 NULL 0

[R7]bg        

[R7]bgp 64513

[R7-bgp]ne        

[R7-bgp]network 172.16.0.0 21

第七步：建立隧道,实现R1、R8两个环回可以通讯

[R1]interface Tunnel 0/0/0

[R1-Tunnel0/0/0]ip address 10.1.1.1 24

[R1-Tunnel0/0/0]tunnel-protocol gre

[R1-Tunnel0/0/0]source 1.1.1.1

[R1-Tunnel0/0/0]destination 8.8.8.8

[R1]ip route-static 192.168.2.0 24 Tunnel 0/0/0

[R8]interface t0/0/0

[R8-Tunnel0/0/0]ip address 10.1.1.2 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