4.17 在FR环境配置OSPF

1.R1配置

[R1]interface Serial 0/0/0
[R1-Serial0/0/0]link-protocol fr ietf 
[R1-Serial0/0/0]undo fr inarp
[R1-Serial0/0/0]ip address 123.1.1.1 8
[R1-Serial0/0/0]fr map ip 123.1.1.2 102 broadcast 
[R1-Serial0/0/0]fr map ip 123.1.1.3 103 broadcast

2.R2配置

[R2]interface Serial 0/0/0
[R2-Serial0/0/0]link-protocol fr ietf 
[R2-Serial0/0/0]undo fr inarp
[R2-Serial0/0/0]ip address 123.1.1.2 8
[R2-Serial0/0/0]fr map ip 123.1.1.1 201 broadcast 

3.R3配置

[R3]interface Serial 0/0/0
[R3-Serial0/0/0]link-protocol fr ietf 
[R3-Serial0/0/0]undo fr inarp
[R3-Serial0/0/0]ip address 123.1.1.3 8
[R3-Serial0/0/0]fr map ip 123.1.1.1 301 broadcast

4.查看帧中继映射

<R1>dis fr map-info 
Map Statistics for interface Serial0/0/0 (DTE)
  DLCI = 102, IP 123.1.1.2, Serial0/0/0
    create time = 2023/02/01 14:39:17, status = ACTIVE
    encapsulation = ietf, vlink = 2, broadcast
  DLCI = 103, IP 123.1.1.3, Serial0/0/0
    create time = 2023/02/01 14:39:39, status = ACTIVE
encapsulation = ietf, vlink = 4, broadcast

<R2>dis fr map-info
Map Statistics for interface Serial0/0/0 (DTE)
  DLCI = 201, IP 123.1.1.1, Serial0/0/0
    create time = 2023/02/01 14:43:11, status = ACTIVE
    encapsulation = ietf, vlink = 1, broadcast

[R3]dis fr map-info
Map Statistics for interface Serial0/0/0 (DTE)
  DLCI = 301, IP 123.1.1.1, Serial0/0/0
    create time = 2023/02/01 15:12:45, status = ACTIVE
    encapsulation = ietf, vlink = 1, broadcast

5.配置R1的OSPPF

[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 123.1.1.0 0.255.255.255

6.配置R2的OSPPF

[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 123.1.1.0 0.255.255.255

7.配置R3的OSPPF

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 123.1.1.0 0.255.255.255 
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

8.查看接口OSPF类型为NBMA

[R1]display ospf interface Serial 0/0/0
 Interface: 123.1.1.1 (Serial0/0/0)
 Cost: 1562    State: DR        Type: NBMA      MTU: 1500  
 Priority: 1

9.R1、R2、R3手动指定邻居

[R1]ospf 1
[R1-ospf-1]peer 123.1.1.2
[R1-ospf-1]peer 123.1.1.3
[R2]ospf 1
[R2-ospf-1]peer 123.1.1.1
[R3]ospf 1
[R3-ospf-1]peer 123.1.1.1

9.查看R1邻居表

[R1]display ospf peer brief 
         OSPF Process 1 with Router ID 1.1.1.1
                  Peer Statistic Information
  Area Id          Interface                        Neighbor id      State    
 0.0.0.0          Serial0/0/0                      2.2.2.2          Full        
 0.0.0.0          Serial0/0/0                      3.3.3.3          Full     

10.查看R1的OSPF路由信息

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

        2.2.2.2/32  OSPF    10   1562        D   123.1.1.2       Serial0/0/0
        3.3.3.3/32  OSPF    10   1562        D   123.1.1.3       Serial0/0/0

11.R2、R3做二层映射

[R2]interface Serial 0/0/0
[R2-Serial0/0/0]fr map ip 123.1.1.3 201 broadcast
[R3]interface Serial 0/0/0
[R3-Serial0/0/0]fr map ip 123.1.1.2 301 broadcast

12.R2、R3测试

[R2]ping -a 2.2.2.2 3.3.3.3
  PING 3.3.3.3: 56  data bytes, press CTRL_C to break
    Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=70 ms
    Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=60 ms
    Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=30 ms
    Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=40 ms
    Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=40 ms

  --- 3.3.3.3 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 30/48/70 ms