3.4 OSPF配置详解-大赛人网

6.Virtual Link虚电路

1）基本配置

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R1-ospf-1-area-0.0.0.0]network 13.1.1.0 0.255.255.255

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]network 23.1.1.0 0.255.255.255

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 13.1.1.0 0.255.255.255
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]network 23.1.1.0 0.255.255.255

2）查看R3的OSPF路由（去往192.168.1.0/24网络经由R1路由器）

[R3]display ospf routing
Destination        Cost  Type       NextHop         AdvRouter       Area
13.0.0.0/8         1     Transit    13.1.1.3        3.3.3.3         0.0.0.0
23.0.0.0/8         1     Stub       23.1.1.3        3.3.3.3         0.0.0.1
12.0.0.0/8         2     Transit    13.1.1.1        1.1.1.1         0.0.0.0
192.168.1.0/24     3     Stub       13.1.1.1        2.2.2.2         0.0.0.0
[R3]tracert 192.168.1.1
 traceroute to  192.168.1.1(192.168.1.1), max hops: 30 ,packet length: 40,press CTRL_C to break 
 1 13.1.1.1 30 ms  50 ms  40 ms 
 2 12.1.1.2 50 ms  60 ms  80 ms 
 3 192.168.1.1 90 ms  100 ms  90 ms

3）配置Virtual Link

[R2-ospf-1-area-0.0.0.1]vlink-peer 3.3.3.3
[R3-ospf-1-area-0.0.0.1]vlink-peer 2.2.2.2

4）在R3查看Virtual Link

[R3]display  ospf vlink  
         OSPF Process 1 with Router ID 3.3.3.3
                 Virtual Links 
 Virtual-link Neighbor-id  -> 2.2.2.2, Neighbor-State: Full
 Interface: 23.1.1.3 (GigabitEthernet0/0/0)
 Cost: 1  State: P-2-P  Type: Virtual 
 Transit Area: 0.0.0.1 
 Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1

5）查看R3的OSPF路由（去往192.168.1.0/24网络经由R2路由器）

[R3]display ospf routing 
Destination        Cost  Type       NextHop         AdvRouter       Area
13.0.0.0/8         1     Transit    13.1.1.3        3.3.3.3         0.0.0.0
23.0.0.0/8         1     Transit    23.1.1.3        3.3.3.3         0.0.0.1
12.0.0.0/8         2     Transit    23.1.1.2        2.2.2.2         0.0.0.0
12.0.0.0/8         2     Transit    13.1.1.1        2.2.2.2         0.0.0.0
192.168.1.0/24     2     Stub       23.1.1.2        2.2.2.2         0.0.0.0
[R3]tracert 192.168.1.1
 traceroute to  192.168.1.1(192.168.1.1), max hops: 30 ,packet length: 40,press CTRL_C to break 
 1 23.1.1.2 40 ms  30 ms  50 ms 
 2 192.168.1.1 60 ms  70 ms  60 ms

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