实验要求
1.R2-7每台路由器均存在一个环回接口用于建立邻居;同时还存在一个环回来代表连接用户的接口;最终这些连接用户的接口网络需要可以和R1/8的环回通讯
2.AS2网段地址 172.16.0.0/16 减少路由条目数量
实验拓扑
网段划分(见拓扑图)
地址配置
R1
[R1]INT G0/0/0
[R1-GigabitEthernet0/0/0]IP ADD 12.1.1.1 24
[R1-GigabitEthernet0/0/0]INT L0
[R1-LoopBack0]IP ADD 1.1.1.1 24
R2
[R2]INT G0/0/0
[R2-GigabitEthernet0/0/0]IP ADD 12.1.1.2 24
[R2-GigabitEthernet0/0/0]INT G0/0/1
[R2-GigabitEthernet0/0/1]IP ADD 172.16.0.1 30
[R2-GigabitEthernet0/0/1]INT G0/0/2
[R2-GigabitEthernet0/0/2]IP ADD 172.16.0.21 30
[R2-GigabitEthernet0/0/2]INT L0
[R2-LoopBack0]IP ADD 172.16.32.2 32
[R2-LoopBack0]INT L1
[R2-LoopBack1]IP ADD 172.16.64.1 19
R3
[R3]INT G0/0/0
[R3-GigabitEthernet0/0/0]IP ADD 172.16.0.2 30
[R3-GigabitEthernet0/0/0]INT G0/0/1
[R3-GigabitEthernet0/0/1]IP ADD 172.16.0.5 30
[R3-GigabitEthernet0/0/1]INT L0
[R3-LoopBack0]IP ADD 172.16.32.3 32
[R3-LoopBack0]INT L1
[R3-LoopBack1]IP ADD 172.16.96.1 19
R4
[R4]INT G0/0/0
[R4-GigabitEthernet0/0/0]IP ADD 172.16.0.6 30
[R4-GigabitEthernet0/0/0]INT G0/0/1
[R4-GigabitEthernet0/0/1]IP ADD 172.16.0.9 30
[R4-GigabitEthernet0/0/1]INT L0
[R4-LoopBack0]IP ADD 172.16.32.4 32
[R4-LoopBack0]INT L1
[R4-LoopBack1]IP ADD 172.16.128.1 19
R5
[R5]INT G0/0/0
[R5-GigabitEthernet0/0/0]IP ADD 172.16.0.22 30
[R5-GigabitEthernet0/0/0]INT G0/0/1
[R5-GigabitEthernet0/0/1]IP ADD 172.16.0.17 30
[R5-GigabitEthernet0/0/1]INT L0
[R5-LoopBack0]IP ADD 172.16.32.5 32
[R5-LoopBack0]INT L1
[R5-LoopBack1]IP ADD 172.16.160.1 19
R6
[R6]INT G0/0/0
[R6-GigabitEthernet0/0/0]IP ADD 172.16.0.18 30
[R6-GigabitEthernet0/0/0]INT G0/0/1
[R6-GigabitEthernet0/0/1]IP ADD 172.16.0.13 30
[R6-GigabitEthernet0/0/1]INT L0
[R6-LoopBack0]IP ADD 172.16.32.6 32
[R6-LoopBack0]INT L1
[R6-LoopBack1]IP ADD 172.16.192.1 19
R7
[R7]INT G0/0/0
[R7-GigabitEthernet0/0/0]IP ADD 172.16.0.14 30
[R7-GigabitEthernet0/0/0]INT G0/0/1
[R7-GigabitEthernet0/0/1]IP ADD 172.16.0.10 30
[R7-GigabitEthernet0/0/1]INT G0/0/2
[R7-GigabitEthernet0/0/2]IP ADD 78.1.1.1 24
[R7-GigabitEthernet0/0/2]INT L0
[R7-LoopBack0]IP ADD 172.16.32.7 32
[R7-LoopBack0]INT L1
[R7-LoopBack1]IP ADD 172.16.224.1 19
R8
[R8]INT G0/0/0
[R8-GigabitEthernet0/0/0]IP ADD 78.1.1.2 24
[R8-GigabitEthernet0/0/0]INT L0
[R8-LoopBack0]IP ADD 8.8.8.8 24
起ospf
R2
[R2]ospf 1
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R2-ospf-1-area-0.0.0.0]network 172.16.32.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 172.16.64.0 0.0.31.255
R3
[R3]ospf 1
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R3-ospf-1-area-0.0.0.0]NETWORK 172.16.32.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 172.16.96.0 0.0.31.255
R4
[R4]OSPF 1
[R4-ospf-1]AREA 0
[R4-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R4-ospf-1-area-0.0.0.0]network 172.16.32.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]network 172.16.128.0 0.0.31.255
R5
[R5]OSPF 1
[R5-ospf-1]AREA 0
[R5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R5-ospf-1-area-0.0.0.0]network 172.16.32.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]network 172.16.160.0 0.0.31.255
R6
[R6]OSPF 1
[R6-ospf-1]AREA 0
[R6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R6-ospf-1-area-0.0.0.0]network 172.16.32.6 0.0.0.0
[R6-ospf-1-area-0.0.0.0]network 172.16.192.0 0.0.31.255
R7
[R7]OSPF
[R7-ospf-1]AREA 0
[R7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.31.255
[R7-ospf-1-area-0.0.0.0]network 172.16.32.7 0.0.0.0
[R7-ospf-1-area-0.0.0.0]network 172.16.224.0 0.0.31.255
检测
建邻
【1】直连(R1R2、R7R8)
R1R2
[R1]BGP 1
[R1-bgp]ROUTER
[R1-bgp]router-id 1.1.1.1
[R1-bgp]PEER 12.1.1.2 AS-NUMBER 2
[R2]BGP 64512
[R2-bgp]ROUTER
[R2-bgp]router-id 2.2.2.2
[R2-bgp]confederation ID 2
[R2-bgp]confederation PEE
[R2-bgp]confederation peer-as 64513
[R2-bgp]peer 12.1.1.1 as-number 1
R7R8
[R7]BGP 64513
[R7-bgp]route-select
[R7-bgp]router-id 7.7.7.7
[R7-bgp]confederation ID 2
[R7-bgp]confederation peer-as 64512
[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
【2】EBGP(R2R5)(R4R7)
R2R5
[R2]BGP 64512
[R2-bgp]PEER 172.16.32.5 as-number 64513
[R2-bgp]peer 172.16.32.5 connect-interface L0
[R2-bgp]peer 172.16.32.5 ebgp-max-hop
[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 172.16.32.2 as-number 64512
[R5-bgp]peer 172.16.32.2 connect-interface L0
[R5-bgp]peer 172.16.32.2 ebgp-max-hop
R4R7
[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 172.16.32.7 as-number 64513
[R4-bgp]PEER 172.16.32.7 connect-interface L0
[R4-bgp]PEER 172.16.32.7 ebgp-max-hop
[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 172.16.32.4 as-number 64512
[R7-bgp]PEER 172.16.32.4 connect-interface L0
[R7-bgp]PEER 172.16.32.4 ebgp-max-hop
【3】IBGP{[R2R3、R3R4(注:R3为反射器)][R5R6、R6R7(注:R6为反射器)]}
R2R3
[R2]BGP 64512
[R2-bgp]router-id 2.2.2.2
[R2-bgp]confederation ID 2
[R2-bgp]PEER 172.16.32.3 as-number 64512
[R2-bgp]PEER 172.16.32.3 connect-interface L0
[R2-bgp]PEER 172.16.32.3 next-hop-local
[R3]BGP 64512
[R3-bgp]router-id 3.3.3.3
[R3-bgp]confederation ID 2
[R3-bgp]PEER 172.16.32.2 as-number 64512
[R3-bgp]PEER 172.16.32.2 connect-interface L0
[R3-bgp]PEER 172.16.32.2 next-hop-local
R3(反射器)
[R3-bgp]PEER 172.16.32.2 reflect-client
R3R4
[R3-bgp]PEER 172.16.32.4 as-number 64512
[R3-bgp]PEER 172.16.32.4 connect-interface L0
[R3-bgp]PEER 172.16.32.4 next-hop-local
[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 172.16.32.3 as-number 64512
[R4-bgp]PEER 172.16.32.3 connect-interface L0
[R4-bgp]PEER 172.16.32.3 next-hop-local
R5R6
[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 172.16.32.6 as-number 64513
[R5-bgp]peer 172.16.32.6 connect-interface L0
[R5-bgp]peer 172.16.32.6 next-hop-local
[R6]BGP 64513
[R6-bgp]router-id 6.6.6.6
[R6-bgp]confederation ID 2
[R6-bgp]peer 172.16.32.5 as-number 64513
[R6-bgp]peer 172.16.32.5 connect-interface L0
[R6-bgp]peer 172.16.32.5 next-hop-local
R6R7
[R6-bgp]peer 172.16.32.7 as-number 64513
[R6-bgp]peer 172.16.32.7 connect-interface L0
[R6-bgp]peer 172.16.32.7 next-hop-local
[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 172.16.32.6 as-number 64513
[R7-bgp]PEER 172.16.32.6 connect-interface L0
[R7-bgp]PEER 172.16.32.6 next-hop-local
R6(反射器)
[R6-bgp]PEER 172.16.32.7 reflect-client
宣告环回
[R1-bgp]network 1.1.1.0 24
[R2-bgp]network 172.16.64.0 19
[R3-bgp]network 172.16.96.0 19
[R4-bgp]network 172.16.128.0 19
[R5-bgp]network 172.16.160.0 19
[R6-bgp]network 172.16.192.0 19
[R7-bgp]network 172.16.224.0 19
[R8-bgp]network 8.8.8.0 24
检测结果
R1 PING R8
R2 PING R6
R3 PING R5
R3BGP路由表
R4BGP路由表
R5BGP路由表
R6BGP路由表
实验结束