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  1. OSPF 单区域配置
  2. OSPF 多区域配置
  3. OSPF 特殊区域之 Stub
  4. OSPF 特殊区域之 NSSA
  5. OSPF 汇总之域间路由

1 OSPF 单区域配置

1.1 问题

1）企业内网存在多个部门，分别属于不同的网段

2）使用最佳的技术方案，实现灵活的网络设计，支持网络规模的扩展

3）如图，配置设备 IP 地址

4）确保 PC-1 和 PC-2 可以互通

1.2 方案

搭建实验环境，如图 - 1 所示。

CASE - 图1

图 - 1

1.3 步骤

实现此案例需要按照如下步骤进行。

1）配置终端设备 - PC1

地址：192.168.1.1

掩码：255.255.255.0

网关：192.168.1.254

2）配置终端设备 - PC2

地址：192.168.2.1

掩码：255.255.255.0

网关：192.168.2.254

3）配置网络设备 - R1

  3. 1.  <Huawei>system-view 
  4. 2.  \[Huawei\]sysname R1
  6. 4.  \[R1\]interface GigabitEthernet 0/0/2
  7. 5.  \[R1-GigabitEthernet 0/0/2\] ip address 192.168.1.254 255.255.255.0
  8. 6.  \[R1-GigabitEthernet 0/0/2\] quit
  10. 8.  \[R1\]interface GigabitEthernet 0/0/0
  11. 9.  \[R1-GigabitEthernet 0/0/0\] ip address 192.168.12.1 255.255.255.0
  12. 10.  \[R1-GigabitEthernet 0/0/0\] quit

4）配置网络设备 - R2

  3. 1.  <Huawei>system-view 
  4. 2.  \[Huawei\]sysname R2
  6. 4.  \[R2\]interface gi0/0/0
  7. 5.  \[R2-GigabitEthernet 0/0/0\] ip address 192.168.23.2 255.255.255.0
  8. 6.  \[R2-GigabitEthernet 0/0/0\] quit
  10. 8.  \[R2\]interface gi0/0/1
  11. 9.  \[R2-GigabitEthernet 0/0/1\] ip address 192.168.12.2 255.255.255.0
  12. 10.  \[R2-GigabitEthernet 0/0/1\] quit

5）配置网络设备 - R3

  3. 1.  <Huawei>system-view 
  4. 2.  \[Huawei\]sysname R3
  6. 4.  \[R3\]interface GigabitEthernet 0/0/2
  7. 5.  \[R3-GigabitEthernet 0/0/2\] ip address 192.168.2.254 255.255.255.0
  8. 6.  \[R3-GigabitEthernet 0/0/2\] quit
  10. 8.  \[R3\]interface GigabitEthernet 0/0/1
  11. 9.  \[R3-GigabitEthernet 0/0/1\] ip address 192.168.23.3 255.255.255.0
  12. 10.  \[R3-GigabitEthernet 0/0/1\] quit

6）配置 OSPF 区域 0

  3. 1.  \[R1\]ospf 1
  4. 2.  \[R1-ospf-1\]area  0 
  5. 3.  \[R1-ospf-1-area-0.0.0.0\]network  192.168.12.0 0.0.0.255
  6. 4.  \[R1-ospf-1-area-0.0.0.0\]network  192.168.1.0 0.0.0.255
  7. 5.  \[R1-ospf-1-area-0.0.0.0\]quit
  9. 7.  \[R2\]ospf 2
  10. 8.  \[R2-ospf-2\]area  0 
  11. 9.  \[R2-ospf-2-area-0.0.0.0\]network  192.168.12.0 0.0.0.255
  12. 10.  \[R2-ospf-2-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  13. 11.  \[R2-ospf-2-area-0.0.0.0\]quit
  15. 13.  \[R3\]ospf 3
  16. 14.  \[R3-ospf-3\]area  0 
  17. 15.  \[R3-ospf-3-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  18. 16.  \[R3-ospf-3-area-0.0.0.0\]network  192.168.2.0 0.0.0.255
  19. 17.  \[R3-ospf-3-area-0.0.0.0\]quit

2 OSPF 多区域配置

2.1 问题

1）企业核心机房，连接不同楼宇，实现不同楼宇互通

2）企业核心机房设置为 OSPF 骨干区域

3）其他办公楼宇为 非骨干区域，通过路由器与核心机房互联互通

2.2 方案

搭建实验环境，如图 - 2 所示。

CASE - 图2

图 - 2

2.3 步骤

实现此案例需要按照如下步骤进行。

1）配置 OSPF - R1

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R1
  6. 4.  \[R1\]interface GigabitEthernet 0/0/0
  7. 5.  \[R1-GigabitEthernet0/0/0\]ip add 192.168.12.1 24
  8. 6.  \[R1-GigabitEthernet0/0/0\]quit 
  9. 7.  \[R1\]interface GigabitEthernet 0/0/2
  10. 8.  \[R1-GigabitEthernet0/0/2\]ip add 192.168.1.254 24
  11. 9.  \[R1-GigabitEthernet0/0/2\]quit 
  13. 11.  \[R1\]ospf 1 router-id 1.1.1.1
  14. 12.  \[R1-ospf-1\]area 12    
  15. 13.  \[R1-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  16. 14.  \[R1-ospf-1-area-0.0.0.12\]network  192.168.1.0 0.0.0.255
  17. 15.  \[R1-ospf-1-area-0.0.0.12\]quit

2）配置 OSPF – R2

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R2
  6. 4.  \[R2\]interface GigabitEthernet 0/0/1
  7. 5.  \[R2-GigabitEthernet0/0/1\]ip add 192.168.12.2 24
  8. 6.  \[R2-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R2\]interface GigabitEthernet 0/0/0
  11. 9.  \[R2-GigabitEthernet0/0/0\]ip add 192.168.23.2 24
  12. 10.  \[R2-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R2\]ospf 1 router-id 2.2.2.2
  15. 13.  \[R2-ospf-1\]area 12    
  16. 14.  \[R2-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  17. 15.  \[R2-ospf-1-area-0.0.0.12\]quit
  18. 16.  \[R2-ospf-1\]area 0    
  19. 17.  \[R2-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  20. 18.  \[R2-ospf-1-area-0.0.0.0\]quit

3）配置 OSPF – R3

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R3
  6. 4.  \[R3\]interface GigabitEthernet 0/0/1
  7. 5.  \[R3-GigabitEthernet0/0/1\]ip add 192.168.23.3 24
  8. 6.  \[R3-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R3\]interface GigabitEthernet 0/0/0
  11. 9.  \[R3-GigabitEthernet0/0/0\]ip add 192.168.34.3 24
  12. 10.  \[R3-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R3\]ospf 1 router-id 3.3.3.3
  15. 13.  \[R3-ospf-1\]area 0    
  16. 14.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  17. 15.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  18. 16.  \[R3-ospf-1-area-0.0.0.0\]quit

4）配置 OSPF – R4

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R4
  6. 4.  \[R4\]interface GigabitEthernet 0/0/1
  7. 5.  \[R4-GigabitEthernet0/0/1\]ip add 192.168.34.4 24
  8. 6.  \[R4-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R4\]interface GigabitEthernet 0/0/0
  11. 9.  \[R4-GigabitEthernet0/0/0\]ip add 192.168.45.4 24
  12. 10.  \[R4-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R4\]ospf 1 router-id 4.4.4.4
  15. 13.  \[R4-ospf-1\]area 0    
  16. 14.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.255
  17. 15.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  18. 16.  \[R4-ospf-1-area-0.0.0.0\]quit

5）配置 OSPF – R5

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R5
  6. 4.  \[R5\]interface GigabitEthernet 0/0/1
  7. 5.  \[R5-GigabitEthernet0/0/1\]ip add 192.168.45.5 24
  8. 6.  \[R5-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R5\]interface GigabitEthernet 0/0/0
  11. 9.  \[R5-GigabitEthernet0/0/0\]ip add 192.168.56.5 24
  12. 10.  \[R5-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R5\]ospf 1 router-id 5.5.5.5
  15. 13.  \[R5-ospf-1\]area 56    
  16. 14.  \[R5-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.255
  17. 15.  \[R5-ospf-1-area-0.0.0.56\]quit
  18. 16.  \[R5-ospf-1\]area 0    
  19. 17.  \[R5-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.255
  20. 18.  \[R5-ospf-1-area-0.0.0.0\]quit

6）配置 OSPF – R6

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R6
  6. 4.  \[R6\]interface GigabitEthernet 0/0/1
  7. 5.  \[R6-GigabitEthernet0/0/1\]ip add 192.168.56.6 24
  8. 6.  \[R6-GigabitEthernet0/0/1\]quit 
  9. 7.  \[R6\]interface GigabitEthernet 0/0/2
  10. 8.  \[R6-GigabitEthernet0/0/2\]ip add 192.168.2.254 24
  11. 9.  \[R6-GigabitEthernet0/0/2\]quit
  13. 11.  \[R6\]ospf 1 router-id 6.6.6.6
  14. 12.  \[R6-ospf-1\]area 56    
  15. 13.  \[R6-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.255
  16. 14.  \[R6-ospf-1-area-0.0.0.56\]network  192.168.2.0 0.0.0.255
  17. 15.  \[R6-ospf-1-area-0.0.0.56\]quit

7）确保 PC-1 和 PC-2 互通

  3. 1.  PC-1>ping 192.168.2.1
  4. 2.  Ping 192.168.2.1: 32 data bytes, Press Ctrl_C to break
  5. 3.  From 192.168.2.1: bytes=32 seq=1 ttl=125 time=31 ms
  6. 4.  From 192.168.2.1: bytes=32 seq=2 ttl=125 time=31 ms
  7. 5.  From 192.168.2.1: bytes=32 seq=3 ttl=125 time=16 ms
  8. 6.  From 192.168.2.1: bytes=32 seq=4 ttl=125 time=16 ms
  9. 7.  From 192.168.2.1: bytes=32 seq=5 ttl=125 time=31 ms
  11. 9.  \-\-\- 192.168.2.1 ping statistics \-\-\-
  12. 10.    5 packet(s) transmitted
  13. 11.    5 packet(s) received
  14. 12.    0.00% packet loss
  15. 13.    round-trip min/avg/max = 16/25/31 ms
  17. 15.  PC-2>ping 192.168.1.1
  18. 16.  Ping 192.168.1.1: 32 data bytes, Press Ctrl_C to break
  19. 17.  From 192.168.1.1: bytes=32 seq=1 ttl=125 time=16 ms
  20. 18.  From 192.168.1.1: bytes=32 seq=2 ttl=125 time=31 ms
  21. 19.  From 192.168.1.1: bytes=32 seq=3 ttl=125 time=31 ms
  22. 20.  From 192.168.1.1: bytes=32 seq=4 ttl=125 time=32 ms
  23. 21.  From 192.168.1.1: bytes=32 seq=5 ttl=125 time=31 ms
  25. 23.  \-\-\- 192.168.1.1 ping statistics \-\-\-
  26. 24.    5 packet(s) transmitted
  27. 25.    5 packet(s) received
  28. 26.    0.00% packet loss
  29. 27.    round-trip min/avg/max = 16/28/32 ms

3 OSPF 特殊区域之 Stub

3.1 问题

1）两公司之间不运行 OSPF 协议，通过静态路由互通

2）企业内部重要区域 (Area 12) 不希望受到外部链路的抖动的影响

3）如果可以优化，确保区域 12 也不受到其他区域的链路的影响

3.2 方案

搭建实验环境，如图 - 3 所示。

CASE - 图3

图 - 3

3.3 步骤

实现此案例需要按照如下步骤进行。

1）配置终端设备 - PC1/2/3

PC-1：

192.168.1.1

255.255.255.0

192.168.1.254

PC-2：

192.168.2.1

255.255.255.0

192.168.2.254

PC-3：

192.168.3.1

255.255.255.0

192.168.3.254

2）配置 OSPF - R1

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R1
  6. 4.  \[R1\]interface GigabitEthernet 0/0/0
  7. 5.  \[R1-GigabitEthernet0/0/0\]ip add 192.168.12.1 24
  8. 6.  \[R1-GigabitEthernet0/0/0\]quit 
  9. 7.  \[R1\]interface GigabitEthernet 0/0/2
  10. 8.  \[R1-GigabitEthernet0/0/2\]ip add 192.168.1.254 24
  11. 9.  \[R1-GigabitEthernet0/0/2\]quit 
  13. 11.  \[R1\]ospf 1 router-id 1.1.1.1
  14. 12.  \[R1-ospf-1\]area 12    
  15. 13.  \[R1-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  16. 14.  \[R1-ospf-1-area-0.0.0.12\]network  192.168.1.0 0.0.0.255
  17. 15.  \[R1-ospf-1-area-0.0.0.12\]quit

3）配置 OSPF – R2

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R2
  6. 4.  \[R2\]interface GigabitEthernet 0/0/1
  7. 5.  \[R2-GigabitEthernet0/0/1\]ip add 192.168.12.2 24
  8. 6.  \[R2-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R2\]interface GigabitEthernet 0/0/0
  11. 9.  \[R2-GigabitEthernet0/0/0\]ip add 192.168.23.2 24
  12. 10.  \[R2-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R2\]ospf 1 router-id 2.2.2.2
  15. 13.  \[R2-ospf-1\]area 12    
  16. 14.  \[R2-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  17. 15.  \[R2-ospf-1-area-0.0.0.12\]quit
  18. 16.  \[R2-ospf-1\]area 0    
  19. 17.  \[R2-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  20. 18.  \[R2-ospf-1-area-0.0.0.0\]quit

4）配置 OSPF – R3

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R3
  6. 4.  \[R3\]interface GigabitEthernet 0/0/1
  7. 5.  \[R3-GigabitEthernet0/0/1\]ip add 192.168.23.3 24
  8. 6.  \[R3-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R3\]interface GigabitEthernet 0/0/0
  11. 9.  \[R3-GigabitEthernet0/0/0\]ip add 192.168.34.3 24
  12. 10.  \[R3-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R3\]ospf 1 router-id 3.3.3.3
  15. 13.  \[R3-ospf-1\]area 0    
  16. 14.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  17. 15.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  18. 16.  \[R3-ospf-1-area-0.0.0.0\]quit

5）配置 OSPF – R4

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R4
  6. 4.  \[R4\]interface GigabitEthernet 0/0/1
  7. 5.  \[R4-GigabitEthernet0/0/1\]ip add 192.168.34.4 24
  8. 6.  \[R4-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R4\]interface GigabitEthernet 0/0/0
  11. 9.  \[R4-GigabitEthernet0/0/0\]ip add 192.168.45.4 24
  12. 10.  \[R4-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R4\]ospf 1 router-id 4.4.4.4
  15. 13.  \[R4-ospf-1\]area 0    
  16. 14.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.255
  17. 15.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  18. 16.  \[R4-ospf-1-area-0.0.0.0\]quit

6）配置 OSPF – R5

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R5
  6. 4.  \[R5\]interface GigabitEthernet 0/0/1
  7. 5.  \[R5-GigabitEthernet0/0/1\]ip add 192.168.45.5 24
  8. 6.  \[R5-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R5\]interface GigabitEthernet 0/0/0
  11. 9.  \[R5-GigabitEthernet0/0/0\]ip add 192.168.56.5 24
  12. 10.  \[R5-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R5\]ospf 1 router-id 5.5.5.5
  15. 13.  \[R5-ospf-1\]area 56    
  16. 14.  \[R5-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.255
  17. 15.  \[R5-ospf-1-area-0.0.0.56\]quit
  18. 16.  \[R5-ospf-1\]area 0    
  19. 17.  \[R5-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.255
  20. 18.  \[R5-ospf-1-area-0.0.0.0\]quit

7）配置 OSPF – R6

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R6
  6. 4.  \[R6\]interface GigabitEthernet 0/0/1
  7. 5.  \[R6-GigabitEthernet0/0/1\]ip add 192.168.56.6 24
  8. 6.  \[R6-GigabitEthernet0/0/1\]quit 
  9. 7.  \[R6\]interface GigabitEthernet 0/0/2
  10. 8.  \[R6-GigabitEthernet0/0/2\]ip add 192.168.2.254 24
  11. 9.  \[R6-GigabitEthernet0/0/2\]quit
  12. 10.  \[R6\]interface GigabitEthernet 0/0/0
  13. 11.  \[R6-GigabitEthernet0/0/0\]ip add 192.168.67.6 24
  14. 12.  \[R6-GigabitEthernet0/0/0\]quit
  16. 15.  \[R6\]ospf 1 router-id 6.6.6.6
  17. 16.  \[R6-ospf-1\]area 56    
  18. 17.  \[R6-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.255
  19. 18.  \[R6-ospf-1-area-0.0.0.56\]network  192.168.2.0 0.0.0.255
  20. 19.  \[R6-ospf-1-area-0.0.0.56\]quit
  22. 21.  \[R6\] ip route-static  192.168.3.0  24  192.168.67.7

8）配置 R7

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R7
  6. 4.  \[R7\]interface GigabitEthernet 0/0/1
  7. 5.  \[R7-GigabitEthernet0/0/1\]ip add 192.168.67.7 24
  8. 6.  \[R7-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R7\]interface GigabitEthernet 0/0/2
  11. 9.  \[R7-GigabitEthernet0/0/2\]ip add 192.168.3.254 24
  12. 10.  \[R7-GigabitEthernet0/0/2\]quit
  14. 12.  \[R7\] ip route-static  192.168.0.0  16  192.168.67.6

9）R6 宣告引入外部路由

  3. 1.  \[R6\]ospf 1 router-id 6.6.6.6
  4. 2.  \[R6-ospf-1\] import-route static

10）配置区域 12 为 Stub 区域

  3. 1.  \[R1\]ospf 1
  4. 2.  \[R1-ospf-1\]area 12    
  5. 3.  \[R1-ospf-1-area-0.0.0.12\]stub
  7. 5.  \[R2\]ospf 1
  8. 6.  \[R2-ospf-1\]area 12    
  9. 7.  \[R2-ospf-1-area-0.0.0.12\]stub

11）配置区域 12 为 Totally Stub 区域

  3. 1.  \[R2\]ospf 1
  4. 2.  \[R2-ospf-1\]area 12    
  5. 3.  \[R2-ospf-1-area-0.0.0.12\]stub no-summary

4 OSPF 特殊区域之 NSSA

4.1 问题

1）企业内网运行 OSPF，经运营商访问公司架设在公网的 “服务器”

2）期望区域 123 不收到外部运营商链路的不稳定的影响

3）“合作公司”与 “企业” 有特定业务合作，要求经过公司访问部署在 “运营商” 的业务服务器

4）如果可以的话，期望区域 123 也不要收到其他的区域的链路的影响

4.2 方案

搭建实验环境，如图 - 4 所示。

/

图 - 4

4.3 步骤

实现此案例需要按照如下步骤进行。

1）配置终端设备 - PC1/Server1

PC-1：

192.168.1.1

255.255.255.0

192.168.1.254

Server-1：

192.168.2.1

255.255.255.0

192.168.2.254

2）配置 OSPF - R1

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R1
  6. 4.  \[R1\]interface GigabitEthernet 0/0/0
  7. 5.  \[R1-GigabitEthernet0/0/0\]ip add 192.168.12.1 24
  8. 6.  \[R1-GigabitEthernet0/0/0\]quit 
  9. 7.  \[R1\]interface GigabitEthernet 0/0/1
  10. 8.  \[R1-GigabitEthernet0/0/1\]ip add 192.168.16.1 24
  11. 9.  \[R1-GigabitEthernet0/0/1\]quit 
  13. 11.  \[R1\]ospf 1 router-id 1.1.1.1
  14. 12.  \[R1-ospf-1\]area 123    
  15. 13.  \[R1-ospf-1-area-0.0.0.123\]network  192.168.12.0 0.0.0.255
  16. 14.  \[R1-ospf-1-area-0.0.0.123\]quit

3）配置 OSPF – R2

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R2
  6. 4.  \[R2\]interface GigabitEthernet 0/0/1
  7. 5.  \[R2-GigabitEthernet0/0/1\]ip add 192.168.12.2 24
  8. 6.  \[R2-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R2\]interface GigabitEthernet 0/0/0
  11. 9.  \[R2-GigabitEthernet0/0/0\]ip add 192.168.23.2 24
  12. 10.  \[R2-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R2\]ospf 1 router-id 2.2.2.2
  15. 13.  \[R2-ospf-1\]area 123    
  16. 14.  \[R2-ospf-1-area-0.0.0.123\]network  192.168.12.0 0.0.0.255
  17. 15.  \[R2-ospf-1-area-0.0.0.123\]network  192.168.23.0 0.0.0.255

4）配置 OSPF – R3

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R3
  6. 4.  \[R3\]interface GigabitEthernet 0/0/1
  7. 5.  \[R3-GigabitEthernet0/0/1\]ip add 192.168.23.3 24
  8. 6.  \[R3-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R3\]interface GigabitEthernet 0/0/0
  11. 9.  \[R3-GigabitEthernet0/0/0\]ip add 192.168.34.3 24
  12. 10.  \[R3-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R3\]ospf 1 router-id 3.3.3.3
  15. 13.  \[R3-ospf-1\]area 0    
  16. 14.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  17. 15.  \[R3-ospf-1-area-0.0.0.0\]quit
  18. 16.  \[R3-ospf-1\]area 123    
  19. 17.  \[R3-ospf-1-area-0.0.0.123\] network  192.168.23.0 0.0.0.255
  20. 18.  \[R3-ospf-1-area-0.0.0.0\]quit

5）配置 OSPF – R4

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R4
  6. 4.  \[R4\]interface GigabitEthernet 0/0/1
  7. 5.  \[R4-GigabitEthernet0/0/1\]ip add 192.168.34.4 24
  8. 6.  \[R4-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R4\]interface GigabitEthernet 0/0/0
  11. 9.  \[R4-GigabitEthernet0/0/0\]ip add 192.168.45.4 24
  12. 10.  \[R4-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R4\]ospf 1 router-id 4.4.4.4
  15. 13.  \[R4-ospf-1\]area 0    
  16. 14.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  17. 15.  \[R4-ospf-1-area-0.0.0.0\]quit
  19. 17.  \[R4\]ip route-static  0.0.0.0 0  192.168.45.5
  21. 19.  \[R4\]ospf 1
  22. 20.  \[R4-ospf-1\]default-route-advertise

6）配置 OSPF – R5

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R5
  6. 4.  \[R5\]interface GigabitEthernet 0/0/1
  7. 5.  \[R5-GigabitEthernet0/0/1\]ip add 192.168.45.5 24
  8. 6.  \[R5-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R5\]interface GigabitEthernet 0/0/2
  11. 9.  \[R5-GigabitEthernet0/0/2\]ip add 192.168.2.254 24
  12. 10.  \[R5-GigabitEthernet0/0/2\]quit 
  14. 12.  \[R5\]ip route-static  192.168.0.0  16  192.168.45.4

7）配置 R6

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R6
  6. 4.  \[R6\]interface GigabitEthernet 0/0/0
  7. 5.  \[R6-GigabitEthernet0/0/0\]ip add 192.168.16.6 24
  8. 6.  \[R6-GigabitEthernet0/0/0\]quit 
  9. 7.  \[R6\]interface GigabitEthernet 0/0/2
  10. 8.  \[R6-GigabitEthernet0/0/2\]ip add 192.168.1.254 24
  11. 9.  \[R6-GigabitEthernet0/0/2\]quit
  13. 11.  \[R6\]ip route-static  192.168.2.0  24  192.168.16.1

8）配置 R1 与 PC1 互通

  3. 1.  \[R1\] ip route-static  192.168.1.0  16  192.168.16.6

9）将区域 123 配置为 NSSA 区域

  3. 1.  \[R1\]ospf 1
  4. 2.  \[R1-ospf-1\]area 123    
  5. 3.  \[R1-ospf-1-area-0.0.0.123\]nssa
  7. 5.  \[R2\]ospf 1
  8. 6.  \[R2-ospf-1\]area 123    
  9. 7.  \[R2-ospf-1-area-0.0.0.123\]nssa
  11. 9.  \[R3\]ospf 1
  12. 10.  \[R3-ospf-1\]area 123    
  13. 11.  \[R3-ospf-1-area-0.0.0.123\]nssa

10）在 R1 上引入静态路由

  3. 1.  \[R1\]ospf 1
  4. 2.  \[R1-ospf-1\]import-route static

11）配置区域 123 为 Totally NSSA 区域

  3. 1.  \[R3\]ospf 1
  4. 2.  \[R3-ospf-1\]area 123    
  5. 3.  \[R3-ospf-1-area-0.0.0.123\]nssa no-summary

5 OSPF 汇总之域间路由

5.1 需求描述

1）企业内网运行多区域的 OSPF 网络，在 R1 上存在多个不稳定的链路

2）R1 上的不稳定链路，会影响到骨干区域的稳定性

3）希望通过技术方案，降低区域 12 的不稳定性对区域 0 的影响

5.2 方案

搭建实验环境，如图 - 5 所示。

CASE - 图4

图 - 5

5.3 步骤

实现此案例需要按照如下步骤进行。

1）配置 OSPF - R1

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R1
  6. 4.  \[R1\]interface GigabitEthernet 0/0/0
  7. 5.  \[R1-GigabitEthernet0/0/0\]ip add 192.168.12.1 24
  8. 6.  \[R1-GigabitEthernet0/0/0\]quit 
  10. 8.  \[R1\]interface LoopBack 1
  11. 9.  \[R1-LoopBack1\]ip address 10.10.1.1 24
  12. 10.  \[R1-LoopBack1\]quit
  14. 12.  \[R1\]interface LoopBack 2
  15. 13.  \[R1-LoopBack2\]ip address 10.10.2.2 24
  16. 14.  \[R1-LoopBack2\]quit
  18. 16.  \[R1\]interface LoopBack 3
  19. 17.  \[R1-LoopBack3\]ip address 10.10.3.3 24
  20. 18.  \[R1-LoopBack3\]quit
  22. 20.  \[R1\]interface LoopBack 4
  23. 21.  \[R1-LoopBack4\]ip address 10.10.4.4 24
  24. 22.  \[R1-LoopBack4\]quit
  26. 24.  \[R1\]ospf 1 router-id 1.1.1.1
  27. 25.  \[R1-ospf-1\]area 12    
  28. 26.  \[R1-ospf-1-area-0.0.0.12\]network  10.10.1.0 0.0.0.255
  29. 27.  \[R1-ospf-1-area-0.0.0.12\]network  10.10.2.0 0.0.0.255
  30. 28.  \[R1-ospf-1-area-0.0.0.12\]network  10.10.3.0 0.0.0.255
  31. 29.  \[R1-ospf-1-area-0.0.0.12\]network  10.10.4.0 0.0.0.255
  32. 30.  \[R1-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  33. 31.  \[R1-ospf-1-area-0.0.0.12\]quit

2）配置 OSPF – R2

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R2
  6. 4.  \[R2\]interface GigabitEthernet 0/0/1
  7. 5.  \[R2-GigabitEthernet0/0/1\]ip add 192.168.12.2 24
  8. 6.  \[R2-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R2\]interface GigabitEthernet 0/0/0
  11. 9.  \[R2-GigabitEthernet0/0/0\]ip add 192.168.23.2 24
  12. 10.  \[R2-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R2\]ospf 1 router-id 2.2.2.2
  15. 13.  \[R2-ospf-1\]area 12    
  16. 14.  \[R2-ospf-1-area-0.0.0.12\]network  192.168.12.0 0.0.0.255
  17. 15.  \[R2-ospf-1-area-0.0.0.12\]quit
  18. 16.  \[R2-ospf-1\]area 0
  19. 17.  \[R2-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  20. 18.  \[R2-ospf-1-area-0.0.0.0\]quit

3）配置 OSPF – R3

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R3
  6. 4.  \[R3\]interface GigabitEthernet 0/0/1
  7. 5.  \[R3-GigabitEthernet0/0/1\]ip add 192.168.23.3 24
  8. 6.  \[R3-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R3\]interface GigabitEthernet 0/0/0
  11. 9.  \[R3-GigabitEthernet0/0/0\]ip add 192.168.34.3 24
  12. 10.  \[R3-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R3\]ospf 1 router-id 3.3.3.3
  15. 13.  \[R3-ospf-1\]area 0    
  16. 14.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  17. 15.  \[R3-ospf-1-area-0.0.0.0\]network  192.168.23.0 0.0.0.255
  18. 16.  \[R3-ospf-1-area-0.0.0.0\]quit

4）配置 OSPF – R4

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R4
  6. 4.  \[R4\]interface GigabitEthernet 0/0/1
  7. 5.  \[R4-GigabitEthernet0/0/1\]ip add 192.168.34.4 24
  8. 6.  \[R4-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R4\]interface GigabitEthernet 0/0/0
  11. 9.  \[R4-GigabitEthernet0/0/0\]ip add 192.168.45.4 24
  12. 10.  \[R4-GigabitEthernet0/0/0\]quit 
  14. 12.  \[R4\]ospf 1 router-id 4.4.4.4
  15. 13.  \[R4-ospf-1\]area 0    
  16. 14.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.34.0 0.0.0.255
  17. 15.  \[R4-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.25
  18. 16.  \[R4-ospf-1-area-0.0.0.0\]quit

5）配置 OSPF – R5

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R5
  6. 4.  \[R5\]interface GigabitEthernet 0/0/1
  7. 5.  \[R5-GigabitEthernet0/0/1\]ip add 192.168.45.5 24
  8. 6.  \[R5-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R5\]interface GigabitEthernet 0/0/0
  11. 9.  \[R5-GigabitEthernet0/0/0\]ip add 192.168.56.5 24
  12. 10.  \[R5-GigabitEthernet0/0/0\]quit 
  13. 11.  \[R5\]ospf 1 router-id 5.5.5.5
  14. 12.  \[R5-ospf-1\]area 0    
  15. 13.  \[R5-ospf-1-area-0.0.0.0\]network  192.168.45.0 0.0.0.255
  16. 14.  \[R5-ospf-1-area-0.0.0.0\]quit
  17. 15.  \[R5-ospf-1\]area 56
  18. 16.  \[R5-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.25
  19. 17.  \[R5-ospf-1-area-0.0.0.56\]quit

6）配置 OSPF – R6

  3. 1.  <Huawei>undo terminal monitor 
  4. 2.  <Huawei>system-view 
  5. 3.  \[Huawei\]sysname R6
  6. 4.  \[R6\]interface GigabitEthernet 0/0/1
  7. 5.  \[R6-GigabitEthernet0/0/1\]ip add 192.168.56.6 24
  8. 6.  \[R6-GigabitEthernet0/0/1\]quit 
  10. 8.  \[R6\]ospf 1 router-id 6.6.6.6
  11. 9.  \[R6-ospf-1\]area 56    
  12. 10.  \[R6-ospf-1-area-0.0.0.56\]network  192.168.56.0 0.0.0.255
  13. 11.  \[R6-ospf-1-area-0.0.0.56\]quit

7）配置 R2 的区域之间的路由汇总

  3. 1.  \[R2\]ospf 1
  4. 2.  \[R2-ospf-1\]area 12    
  5. 3.  \[R2-ospf-1-area-0.0.0.12\]abr-summary 10.10.0.0  255.255.0.0

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