一、要求
二、拓扑图
三、步骤
1.划分子网
2.配置IP地址
3.配置OSPF
4.建邻
四、具体
1.划分子网
172.16.0.0/16
- 172.16.0.0/17
- 172.16.0.0/30
- 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
- 172.16.128.0/17
- 172.16.128.0/20
- 172.16.144.0/20
- 172.16.160.0/20
- 172.16.176.0/20
- 172.16.192.0/20
- 172.16.208.0/20
2.配置IP地址
3.配置OSPF
[r2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
4.建邻
1）R1、R2；R7、R8直连EBGP建邻
2）IBGP建邻
声明小AS
[r2]bgp 64512
[r2-bgp]router-id 2.2.2.2
[r2-bgp]confederation id 2
与AS1建邻
[r2-bgp]peer 12.1.1.1 as-number 1
与R3建邻
[r2-bgp]peer 3.3.3.3 as-number 64512
[r2-bgp]peer 3.3.3.3 connect-interface LoopBack 0
告知与联邦建邻
[r2-bgp]confederation peer-as 64513
与R5伪EBGP建邻
[r2-bgp]peer 5.5.5.5 as-number 64513
[r2-bgp]peer 5.5.5.5 connect-interface LoopBack 0
[r2-bgp]peer 5.5.5.5 ebgp-max-hop 2
声明小AS
[r3]bgp 64512
[r3-bgp]router-id 3.3.3.3
[r3-bgp]confederation id 2
与R2建邻
[r3-bgp]peer 2.2.2.2 as-number 64512
[r3-bgp]peer 2.2.2.2 connect-interface LoopBack 0
2.2.2.2成为本地的客户端，同时本地成为RR
[r3-bgp]peer 2.2.2.2 reflect-client
与R4建邻
[r3-bgp]peer 4.4.4.4 as-number 64512
[r3-bgp]peer 4.4.4.4 connect-interface LoopBack 0
声明小AS
[r4]bgp 64512
[r4-bgp]router-id 4.4.4.4
[r4-bgp]confederation id 2
与R3建邻
[r4-bgp]peer 3.3.3.3 as-number 64512
[r4-bgp]peer 3.3.3.3 connect-interface LoopBack 0
告知与联邦建邻
[r4-bgp]confederation peer-as 64513
与R7伪EBGP建邻
[r4-bgp]peer 7.7.7.7 as-number 64513
[r4-bgp]peer 7.7.7.7 connect-interface LoopBack 0
[r4-bgp]peer 7.7.7.7 ebgp-max-hop 2
声明小AS
[r5]bgp 64513
[r5-bgp]router-id 5.5.5.5
[r5-bgp]confederation id 2
告知与联邦建邻
[r5-bgp]confederation peer-as 64512
与R2伪EBGP建邻
[r5-bgp]peer 2.2.2.2 as-number 64512
[r5-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[r5-bgp]peer 2.2.2.2 ebgp-max-hop 2
与R6建邻
[r5-bgp]peer 6.6.6.6 as-number 64513
[r5-bgp]peer 6.6.6.6 connect-interface LoopBack 0
声明小AS
[r6]bgp 64513
[r6-bgp]router-id 6.6.6.6
[r6-bgp]confederation id 2
与R5建邻
[r6-bgp]peer 5.5.5.5 as-number 64513
[r6-bgp]peer 5.5.5.5 connect-interface LoopBack 0
5.5.5.5成为本地的客户端，同时本地成为RR
[r6-bgp]peer 5.5.5.5 reflect-client
与R7建邻
[r6-bgp]peer 7.7.7.7 as-number 64513
[r6-bgp]peer 7.7.7.7 connect-interface LoopBack 0
声明小AS
[r7]bgp 64513
[r7-bgp]router-id 7.7.7.7
[r7-bgp]confederation id 2
与R6建邻
[r7-bgp]peer 6.6.6.6 as-number 64513
[r7-bgp]peer 6.6.6.6 connect-interface LoopBack 0
告知与联邦建邻
[r7-bgp]confederation peer-as 64512
与R4伪EBGP建邻
[r7-bgp]peer 4.4.4.4 as-number 64512
[r7-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[r7-bgp]peer 4.4.4.4 ebgp-max-hop 2
与AS3建邻
[r7-bgp]peer 23.1.1.2 as-number 3