4.16 OSPF虚电路-大赛人网

1.R1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 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255

2.R2配置

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

3.R3配置

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.1]network 23.1.1.0 0.255.255.255
[R3-ospf-1]area 2
[R3-ospf-1-area-0.0.0.2]network 34.1.1.0 0.255.255.255

4.R4配置

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 2
[R4-ospf-1-area-0.0.0.2]network 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.2]network 34.1.1.0 0.255.255.255

5.查看R1、R4的OSPF路由信息，R1未学习到R4路由，R4未学习到任何路由

<R1>display ip routing-table protocol ospf 
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
        2.2.2.2/32  OSPF    10   1           D   12.1.1.2        GigabitEthernet0/0/0
        3.3.3.3/32  OSPF    10   2           D   12.1.1.2        GigabitEthernet0/0/0
       23.0.0.0/8   OSPF    10   2           D   12.1.1.2        GigabitEthernet0/0/0

[R4]display ip routing-table protocol ospf

6.R2、R3创建虚电路

[R2]ospf 1
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]vlink-peer 23.1.1.3
[R2-ospf-1-area-0.0.0.1]vlink-peer 3.3.3.3
[R3]ospf 1
[R3-ospf-1-area-0.0.0.1]vlink-peer 2.2.2.2

7.查看R1、G4的OSPF路由

<R1>display ip routing-table protocol ospf
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

        2.2.2.2/32  OSPF    10   1           D   12.1.1.2        GigabitEthernet0/0/0
        3.3.3.3/32  OSPF    10   2           D   12.1.1.2        GigabitEthernet0/0/0
        4.4.4.4/32  OSPF    10   3           D   12.1.1.2        GigabitEthernet0/0/0
       23.0.0.0/8   OSPF    10   2           D   12.1.1.2        GigabitEthernet0/0/0
       34.0.0.0/8   OSPF    10   3           D   12.1.1.2        GigabitEthernet0/0/0

[R4]display ip routing-table protocol ospf
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

        1.1.1.1/32  OSPF    10   3           D   34.1.1.3        GigabitEthernet0/0/0
        2.2.2.2/32  OSPF    10   2           D   34.1.1.3        GigabitEthernet0/0/0
        3.3.3.3/32  OSPF    10   1           D   34.1.1.3        GigabitEthernet0/0/0
       12.0.0.0/8   OSPF    10   3           D   34.1.1.3        GigabitEthernet0/0/0
       23.0.0.0/8   OSPF    10   2           D   34.1.1.3        GigabitEthernet0/0/0

8.查看R4的LSDB

[R4]display ospf lsdb 
  OSPF Process 1 with Router ID 4.4.4.4
                 Link State Database 
                         Area: 0.0.0.2
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    4.4.4.4         4.4.4.4            461  48    80000004       1
 Router    3.3.3.3         3.3.3.3             85  36    80000006       1
 Network   34.1.1.3        3.3.3.3            457  32    80000002       0
 Sum-Net   23.0.0.0        3.3.3.3             85  28    80000001       1
 Sum-Net   3.3.3.3         3.3.3.3             85  28    80000001       0
 Sum-Net   2.2.2.2         3.3.3.3             85  28    80000001       1
 Sum-Net   1.1.1.1         3.3.3.3             85  28    80000001       2
 Sum-Net   12.0.0.0        3.3.3.3             85  28    80000001       2

9.区域0认证后，虚电路属于区域0，也需做认证

[R1]ospf 1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]authentication-mode md5 1 plain dsrw.com
[R2]ospf 1
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]authentication-mode md5 1 plain dsrw.com

10.R3查看OSPF错误信息

<R3>display  ospf error 
19    : Bad packet
19    : Bad authentication type

11.R3区域0做认证

[R3]ospf 1
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]authentication-mode md5 1 plain dsrw.com

12.查看虚电路

[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 (GigabitEthernet0/0/1)
 Cost: 1  State: P-2-P  Type: Virtual 
 Transit Area: 0.0.0.1 
 Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1 
 GR State: Normal

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