4.6 配置多区域OSPF

1.R1配置

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.1]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
[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 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 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.1]network 12.1.1.0 0.255.255.255

3.R3配置

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]quit
[R3-ospf-1]area 2
[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 34.1.1.0 0.255.255.255

4.R4配置

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]ar
[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OSPF路由表

<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