5.2路由重分发配置详解

1.RIP与OSPF之间的路由重分发

1）基本配置

[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 1.0.0.0 
[R1-rip-1]network 12.0.0.0

[R2]rip 1
[R2-rip-1]version 2
[R2-rip-1]network 12.0.0.0
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[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 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 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

2）路由引入

[R2-ospf-1]import-route rip 
[R2-rip-1]import-route ospf

3）查看路由表

[R1]display ip routing-table protocol rip
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
2.2.2.2/32  RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
3.3.3.3/32  RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
23.0.0.0/8   RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
[R3]display  ip routing-table protocol ospf 
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
1.1.1.1/32  O_ASE   150  1           D   23.1.1.2        GigabitEthernet0/0/0
2.2.2.2/32  OSPF    10   1           D   23.1.1.2        GigabitEthernet0/0/0
12.0.0.0/8   O_ASE   150  1           D   23.1.1.2        GigabitEthernet0/0/0

2.直连路由与OSPF的重分发

1）基本配置

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]import-route direct 

2）查看路由表

<R2>display ip routing-table protocol ospf
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
3.3.3.3/32  OSPF    10   1           D   23.1.1.3        GigabitEthernet0/0/0
34.0.0.0/8   O_ASE   150  1           D   23.1.1.3        GigabitEthernet0/0/0

<R1>display ip routing-table protocol rip
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
2.2.2.2/32  RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
3.3.3.3/32  RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
23.0.0.0/8   RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1
34.0.0.0/8   RIP     100  1           D   12.1.1.2        GigabitEthernet0/0/1

3.静态路由与OSPF的重分发

1）基本配置

[R1]ospf 1 router-id 1.1.1.1
[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

[R2]ip route-static 3.3.3.3 32 23.1.1.3
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[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]import-route static 

[R3]ip route-static 0.0.0.0 0.0.0.0 23.1.1.2

2）查看R1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  O_ASE   150  1           D   12.1.1.2        GigabitEthernet0/0/0

3）R2引入直连接口

[R2-ospf-1]import-route direct

4）查看R1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  O_ASE   150  1           D   12.1.1.2        GigabitEthernet0/0/0
23.0.0.0/8   O_ASE   150  1           D   12.1.1.2        GigabitEthernet0/0/0

5）R2的GigabitEthernet0/0/1引入OSPF

[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

6）查看R1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  O_ASE   150  1           D   12.1.1.2        GigabitEthernet0/0/0
23.0.0.0/8   OSPF    10   2           D   12.1.1.2        GigabitEthernet0/0/0