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华三静态路由、路由负载分担、路由备份与BFD联动_h3c路由器 静态路由

作者：2023面试高手 | 2024-03-27 21:00:29

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h3c路由器 静态路由

拓扑如下：

参数配置

设备接口IP地址子网掩码默认网关
R1G0/0192.168.1.1255.255.255.0N/A
S1/0192.168.12.1255.255.255.0N/A
R2S1/0192.168.12.2255.255.255.0N/A
S2/0192.168.23.2255.255.255.0N/A
S1/0192.168.23.3255.255.255.0N/A
R3Loopback0172.16.0.3255.255.255.0N/A
Loopback1172.16.1.3255.255.255.0N/A
Loopback2172.16.2.3255.255.255.0N/A
Loopback3172.16.3.3255.255.255.0N/A
PC1G0/1192.168.1.100255.255.255.0192.168.1.1

 一、带下一跳的静态路由

配置：

  1. AR1配置
  2.  
  3. [AR1]interface GigabitEthernet 0/0
  4.  
  5. [AR1-GigabitEthernet0/0]ip address 192.168.1.1 24
  6.  
  7. [AR1-GigabitEthernet0/0]undo shutdown 
  8.  
  9. [AR1]interface Serial 1/0
  10.  
  11. [AR1-Serial1/0]ip address 192.168.12.1 24
  12.  
  13. [AR1-Serial1/0]undo  shutdown 
  14.  
  15. 配置带下一跳地址的静态路由
  16. [AR1]ip route-static 172.16.0.0 24 192.168.12.2
  17.  
  18. [AR1]ip route-static 172.16.1.0 24 192.168.12.2
  19.  
  20. [AR1]ip route-static 172.16.2.0 24 192.168.12.2
  21.  
  22. [AR1]ip route-static 172.16.3.0 24 192.168.12.2
  23.  
  24. [AR1]ip route-static 172.16.23.0 24 192.168.12.2
  1. AR2配置
  2.  
  3. [AR2]interface Serial 1/0
  4.  
  5. [AR2-Serial1/0]ip address 192.168.12.2 24
  6.  
  7. [AR2-Serial1/0]undo  shutdown  
  8.  
  9. [AR2]interface Serial 2/0
  10.  
  11. [AR2-Serial2/0]ip address 192.168.23.2 24
  12.  
  13. [AR2-Serial2/0]undo  shutdown 
  14.  
  15. 以下配置带下一跳地址的静态路由
  16.  
  17. [AR2]ip route-static 172.16.0.0 24 192.168.23.3
  18.  
  19. [AR2]ip route-static 172.16.1.0 24 192.168.23.3
  20.  
  21. [AR2]ip route-static 172.16.2.0 24 192.168.23.3
  22.  
  23. [AR2]ip route-static 172.16.3.0 24 192.168.23.3
  24.  
  25. [AR2]ip route-static 192.168.1.0 24 192.168.12.1
  1. AR3配置
  2.  
  3. [AR3]interface LoopBack 0
  4.  
  5. [AR3-LoopBack0]ip address 172.16.0.3 24
  6.  
  7. [AR3]interface LoopBack 1
  8.  
  9. [AR3-LoopBack1]ip address 172.16.1.3 24
  10.  
  11. [AR3]interface LoopBack 2
  12.  
  13. [AR3-LoopBack2]ip address 172.16.2.3 24
  14.  
  15. [AR3]interface LoopBack 3
  16.  
  17. [AR3-LoopBack3]ip address 172.16.3.3 24
  18.  
  19. [AR3]interface Serial 1/0
  20.  
  21. [AR3-Serial1/0]ip address 192.168.23.3 24
  22.  
  23. [AR3-Serial1/0]undo shutdown 
  24.  
  25. [AR3]ip route-static 192.168.1.0 24 192.168.23.2
  26.  
  27. [AR3]ip route-static 192.168.12.0 24 192.168.23.2
  1. 查看AR1路由表
  2.  
  3. [AR1]display  ip routing-table 
  4.  
  5. Destinations : 18       Routes : 18
  6.  
  7. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  8. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  9. 127.0.0.0/8        Direct  0   0           127.0.0.1       InLoop0
  10. 127.0.0.0/32       Direct  0   0           127.0.0.1       InLoop0
  11. 127.0.0.1/32       Direct  0   0           127.0.0.1       InLoop0
  12. 127.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0
  13. 172.16.0.0/24      Static  60  0           192.168.12.2    Ser1/0
  14. 172.16.1.0/24      Static  60  0           192.168.12.2    Ser1/0
  15. 172.16.2.0/24      Static  60  0           192.168.12.2    Ser1/0
  16. 172.16.3.0/24      Static  60  0           192.168.12.2    Ser1/0
  17. 172.16.23.0/24     Static  60  0           192.168.12.2    Ser1/0
  18. 192.168.12.0/24    Direct  0   0           192.168.12.1    Ser1/0
  19. 192.168.12.0/32    Direct  0   0           192.168.12.1    Ser1/0
  20. 192.168.12.1/32    Direct  0   0           127.0.0.1       InLoop0
  21. 192.168.12.2/32    Direct  0   0           192.168.12.2    Ser1/0
  22. 192.168.12.255/32  Direct  0   0           192.168.12.1    Ser1/0
  23. 224.0.0.0/4        Direct  0   0           0.0.0.0         NULL0
  24. 224.0.0.0/24       Direct  0   0           0.0.0.0         NULL0
  25. 255.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0
  1. 查看AR2路由表
  2.  
  3. [AR2]display  ip routing-table  
  4.  
  5. Destinations : 23       Routes : 23
  6.  
  7. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  8. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  9. 127.0.0.0/8        Direct  0   0           127.0.0.1       InLoop0
  10. 127.0.0.0/32       Direct  0   0           127.0.0.1       InLoop0
  11. 127.0.0.1/32       Direct  0   0           127.0.0.1       InLoop0
  12. 127.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0
  13. 172.16.0.0/24      Static  60  0           192.168.23.3    Ser2/0
  14. 172.16.1.0/24      Static  60  0           192.168.23.3    Ser2/0
  15. 172.16.2.0/24      Static  60  0           192.168.23.3    Ser2/0
  16. 172.16.3.0/24      Static  60  0           192.168.23.3    Ser2/0
  17. 192.168.1.0/24     Static  60  0           192.168.12.1    Ser1/0
  18. 192.168.12.0/24    Direct  0   0           192.168.12.2    Ser1/0
  19. 192.168.12.0/32    Direct  0   0           192.168.12.2    Ser1/0
  20. 192.168.12.1/32    Direct  0   0           192.168.12.1    Ser1/0
  21. 192.168.12.2/32    Direct  0   0           127.0.0.1       InLoop0
  22. 192.168.12.255/32  Direct  0   0           192.168.12.2    Ser1/0
  23. 192.168.23.0/24    Direct  0   0           192.168.23.2    Ser2/0
  24. 192.168.23.0/32    Direct  0   0           192.168.23.2    Ser2/0
  25. 192.168.23.2/32    Direct  0   0           127.0.0.1       InLoop0
  26. 192.168.23.3/32    Direct  0   0           192.168.23.3    Ser2/0
  27. 192.168.23.255/32  Direct  0   0           192.168.23.2    Ser2/0
  28. 224.0.0.0/4        Direct  0   0           0.0.0.0         NULL0
  29. 224.0.0.0/24       Direct  0   0           0.0.0.0         NULL0
  30. 255.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0
  1. 查看AR3路由表
  2.  
  3. [AR3]display  ip routing-table  
  4.  
  5. Destinations : 31       Routes : 31
  6.  
  7. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  8. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  9. 127.0.0.0/8        Direct  0   0           127.0.0.1       InLoop0
  10. 127.0.0.0/32       Direct  0   0           127.0.0.1       InLoop0
  11. 127.0.0.1/32       Direct  0   0           127.0.0.1       InLoop0
  12. 127.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0
  13. 172.16.0.0/24      Direct  0   0           172.16.0.3      Loop0
  14. 172.16.0.0/32      Direct  0   0           172.16.0.3      Loop0
  15. 172.16.0.3/32      Direct  0   0           127.0.0.1       InLoop0
  16. 172.16.0.255/32    Direct  0   0           172.16.0.3      Loop0
  17. 172.16.1.0/24      Direct  0   0           172.16.1.3      Loop1
  18. 172.16.1.0/32      Direct  0   0           172.16.1.3      Loop1
  19. 172.16.1.3/32      Direct  0   0           127.0.0.1       InLoop0
  20. 172.16.1.255/32    Direct  0   0           172.16.1.3      Loop1
  21. 172.16.2.0/24      Direct  0   0           172.16.2.3      Loop2
  22. 172.16.2.0/32      Direct  0   0           172.16.2.3      Loop2
  23. 172.16.2.3/32      Direct  0   0           127.0.0.1       InLoop0
  24. 172.16.2.255/32    Direct  0   0           172.16.2.3      Loop2
  25. 172.16.3.0/24      Direct  0   0           172.16.3.3      Loop3
  26. 172.16.3.0/32      Direct  0   0           172.16.3.3      Loop3
  27. 172.16.3.3/32      Direct  0   0           127.0.0.1       InLoop0
  28. 172.16.3.255/32    Direct  0   0           172.16.3.3      Loop3
  29. 192.168.1.0/24     Static  60  0           192.168.23.2    Ser1/0
  30. 192.168.12.0/24    Static  60  0           192.168.23.2    Ser1/0
  31. 192.168.23.0/24    Direct  0   0           192.168.23.3    Ser1/0
  32. 192.168.23.0/32    Direct  0   0           192.168.23.3    Ser1/0
  33. 192.168.23.2/32    Direct  0   0           192.168.23.2    Ser1/0
  34. 192.168.23.3/32    Direct  0   0           127.0.0.1       InLoop0
  35. 192.168.23.255/32  Direct  0   0           192.168.23.3    Ser1/0
  36. 224.0.0.0/4        Direct  0   0           0.0.0.0         NULL0
  37. 224.0.0.0/24       Direct  0   0           0.0.0.0         NULL0
  38. 255.255.255.255/32 Direct  0   0           127.0.0.1       InLoop0

配置PC机

 测试：

 以上就是带下一跳地址的静态路由

二、带送出接口的静态路由

需要先将原来配置的静态路由删除掉只需要在前面加上undo就可以了

  1. AR1带出接口的静态路由配置
  2.  
  3. ip route-static 172.16.0.0 24 s1/0
  4.  
  5. ip route-static 172.16.1.0 24 s1/0
  6.  
  7. ip route-static 172.16.2.0 24 s1/0
  8.  
  9. ip route-static 172.16.3.0 24 s1/0
  10.  
  11. ip route-static 172.16.23.0 24 s1/0
  1. AR2带出接口的静态路由配置
  2.  
  3. ip route-static 172.16.0.0 24  s2/0
  4.  
  5. ip route-static 172.16.1.0 24  s2/0
  6.  
  7. ip route-static 172.16.2.0 24  s2/0
  8.  
  9. ip route-static 172.16.3.0 24 s2/0
  10.  
  11. ip route-static 192.168.1.0 24 s1/0
  1. AR3带出接口的静态路由配置
  2.  
  3. ip route-static 192.168.1.0 24 s2/0
  4.  
  5. ip route-static 192.168.12.0 24 s2/0

查看路由表

  1. AR1路由表
  2.  
  3. [AR1]display  ip routing-table  protocol static 
  4.  
  5. Summary count : 5
  6.  
  7. Static Routing table status : <Active>
  8. Summary count : 5
  9.  
  10. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  11. 172.16.0.0/24      Static  60  0           0.0.0.0         Ser1/0
  12. 172.16.1.0/24      Static  60  0           0.0.0.0         Ser1/0
  13. 172.16.2.0/24      Static  60  0           0.0.0.0         Ser1/0
  14. 172.16.3.0/24      Static  60  0           0.0.0.0         Ser1/0
  15. 172.16.23.0/24     Static  60  0           0.0.0.0         Ser1/0
  1. AR2路由表
  2.  
  3. [AR2]display  ip routing-table  protocol static 
  4.  
  5. Summary count : 5
  6.  
  7. Static Routing table status : <Active>
  8. Summary count : 5
  9.  
  10. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  11. 172.16.0.0/24      Static  60  0           0.0.0.0         Ser1/0
  12. 172.16.1.0/24      Static  60  0           0.0.0.0         Ser1/0
  13. 172.16.2.0/24      Static  60  0           0.0.0.0         Ser1/0
  14. 172.16.3.0/24      Static  60  0           0.0.0.0         Ser1/0
  15. 192.168.1.0/24     Static  60  0           0.0.0.0         Ser1/0
  1. AR3路由表
  2.  
  3. [AR3]display ip routing-table  protocol static  
  4.  
  5. Summary count : 2
  6.  
  7. Static Routing table status : <Active>
  8. Summary count : 2
  9.  
  10. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  11. 192.168.1.0/24     Static  60  0           0.0.0.0         Ser2/0
  12. 192.168.12.0/24    Static  60  0           0.0.0.0         Ser2/0

测试：

 三、汇总静态路由与默认路由

拓扑如下:

 配置信息：

设备接口IP地址子网掩码默认网关
AR1Loopback 010.10.10.10 255.255.255.0N/A
S1/0172.16.12.1   255.255.255.0N/A

AR2

S1/0172.16.12.2255.255.255.0N/A
Loopback0192.168.12.2255.255.255.0N/A
Loopback1192.168.13.2   255.255.255.0N/A
Loopback2192.168.14.2255.255.255.0N/A
Loopback3192.168.15.2255.255.255.0N/A

一、汇总路由配置

  1. AR1配置
  2.  
  3. [AR1]interface LoopBack 0
  4.  
  5. [AR1-LoopBack0]ip address 10.10.10.10 24
  6.  
  7. [AR1-Serial1/0]ip address 172.16.12.1 24
  8.  
  9. [AR1-Serial1/0]un shutdown  
  10.  
  11. [AR1]ip route-static 192.168.12.0 22 s1/0 //配置静态汇总路由，使用聚合地址
  12.  
  1. AR2配置
  2.  
  3. [AR2]interface LoopBack  0
  4.  
  5. [AR2-LoopBack0]ip address 192.168.12.2 24 
  6.  
  7. [AR2]interface LoopBack  1
  8.  
  9. [AR2-LoopBack1]ip address 192.168.13.2 24 
  10.  
  11. [AR2]interface LoopBack  2
  12.  
  13. [AR2-LoopBack2]ip address 192.168.14.2 24 
  14.  
  15. [AR2]interface LoopBack  3
  16.  
  17. [AR2-LoopBack3]ip address 192.168.15.2 24 
  18.  
  19. [AR2]ip route-static 10.10.10.0 24 s1/0

测试：带源去ping

  1. [AR1]ping -a 10.10.10.10 192.168.12.2
  2. Ping 192.168.12.2 (192.168.12.2) from 10.10.10.10: 56 data bytes, press CTRL_C to break
  3. 56 bytes from 192.168.12.2: icmp_seq=0 ttl=255 time=1.000 ms
  4. 56 bytes from 192.168.12.2: icmp_seq=1 ttl=255 time=1.000 ms
  5. 56 bytes from 192.168.12.2: icmp_seq=2 ttl=255 time=2.000 ms
  6. 56 bytes from 192.168.12.2: icmp_seq=3 ttl=255 time=2.000 ms
  7. 56 bytes from 192.168.12.2: icmp_seq=4 ttl=255 time=2.000 ms
  8.  
  9. --- Ping statistics for 192.168.12.2 ---
  10. 5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
  11. round-trip min/avg/max/std-dev = 1.000/1.600/2.000/0.490 ms
  12. [AR1]%May 16 15:49:15:645 2022 AR1 PING/6/PING_STATISTICS: Ping statistics for 192.168.12.2: 5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss, round-trip min/avg/max/std-dev = 1.000/1.600/2.000/0.490 ms.

默认路由配置

[AR1]ip route-static 0.0.0.0 0 Serial 1/0  //配置静态默认路由，网络地址与子网掩码都为0，在没有精准的匹配时，此条路由条目能与所有网络匹配

路由负载分担

拓扑如下：

 

接口参数配置：

设备接口IP地址子网掩码网关
AR1Loopback010.10.10.10255.255.255.0N/A
G0/0192.168.1.1255.255.255.0N/A
G0/1192.168.2.1255.255.255.0N/A
AR2Loopback020.20.20.20255.255.255.0N/A
G0/0192.168.1.2255.255.255.0N/A
G0/1192.168.2.2255.255.255.0N/A

 配置：

  1. AR1配置
  2.  
  3. [AR1]interface LoopBack  0
  4.  
  5. [AR1-LoopBack0]ip address 10.10.10.10 24
  6.  
  7. [AR1]interface GigabitEthernet 0/0
  8.  
  9. [AR1-GigabitEthernet0/0]ip address 192.168.1.1 24
  10.  
  11. [AR1-GigabitEthernet0/0]undo shutdown 
  12.  
  13. [AR1]interface GigabitEthernet 0/1
  14.  
  15. [AR1-GigabitEthernet0/1]ip address 192.168.2.1 24
  16.  
  17. [AR1-GigabitEthernet0/1]undo shutdown
  18.  
  19. [AR1]ip route-static 20.20.20.0 24 192.168.1.2 
  20.  
  21. [AR1]ip route-static 20.20.20.0 24 192.168.2.2
  22.  
  23. 查看路由表
  24.  
  25. 可以看到去往20.20.20.0网段的也有两条路由，静态路由的优先级都是60代价是0数据会根据路由表条目，一半流量走192.168.1.2一半流量走192.168.2.2
  26.  
  27.  
  28. [AR1]display  ip routing-table  
  29.  
  30. Destinations : 21       Routes : 22
  31.  
  32. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  33. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  34. 10.10.10.255/32    Direct  0   0           10.10.10.10     Loop0
  35. 20.20.20.0/24      Static  60  0           192.168.1.2     GE0/0
  36.                                            192.168.2.2     GE0/1
  1. AR2配置
  2.  
  3. [AR2]interface LoopBack  0
  4.  
  5. [AR2-LoopBack0]ip address 20.20.20.20 24
  6.  
  7. [AR2]interface GigabitEthernet 0/0
  8.  
  9. [AR2-GigabitEthernet0/0]ip address 192.168.1.2 24
  10.  
  11. [AR2-GigabitEthernet0/0]undo shutdown
  12.  
  13. [AR2]interface GigabitEthernet 0/1
  14.  
  15. [AR2-GigabitEthernet0/1]ip address 192.168.2.2 24 
  16.  
  17. [AR2-GigabitEthernet0/1]undo shutdown
  18.  
  19. [AR2]ip route-static 10.10.10.0 24 192.168.1.1
  20.  
  21. [AR2]ip route-static 10.10.10.0 24 192.168.2.1
  22.  
  23.  
  24. 查看路由表
  25.  
  26. 可以看到去往10.10.10.0网段的下一跳有两个因为静态路由的优先级都是60代价是0数据会根据路由表条目
  27. 一半流量走192.168.1.1一半流量走192.168.2.1
  28.  
  29. [AR2]display  ip routing-table  
  30.  
  31. Destinations : 21       Routes : 22
  32.  
  33. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  34. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  35. 10.10.10.0/24      Static  60  0           192.168.1.1     GE0/0
  36.                                            192.168.2.1     GE0/1
  37. 20.20.20.0/24      Direct  0   0           20.20.20.20     Loop0
  38. 20.20.20.0/32      Direct  0   0           20.20.20.20     Loop0

路由备份

 这里将第二条路由改成了100，现在流量默认从优先级为60的走

  1. AR1配置
  2.  
  3. [AR1]undo  ip route-static 20.20.20.0 24 192.168.2.2  //删除一条路由
  4.  
  5. [AR1]ip route-static 202.20.20.0 24 192.168.2.2 preference 100  //添加一条路由并设置优先级
  6.  
  7. 查看路由表
  8.  
  9. 可以看到去往20.20.20.0网段的地址现在就只有一个了
  10.  
  11. [AR1]display  ip routing-table  
  12.  
  13. Destinations : 22       Routes : 22
  14.  
  15. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  16. 20.20.20.0/24      Static  60  0           192.168.1.2     GE0/0
  17. 127.0.0.0/8        Direct  0   0           127.0.0.1       InLoop0
  1. AR2配置
  2.  
  3. [AR2]undo ip route-static 10.10.10.0 24 192.168.2.1 //删除第二条路由
  4.  
  5. [AR2]ip route-static 10.10.10.0 24 192.168.2.1 preference 100 //添加路有并且将优先级调到100
  6.  
  7. 查看路由表
  8. 可以看到去往10.10.10.0网段的也只有一条了
  9. [AR2]display  ip routing-table  
  10.  
  11. Destinations : 21       Routes : 21
  12.  
  13. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  14. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  15. 10.10.10.0/24      Static  60  0           192.168.1.1     GE0/0
  16. 20.20.20.0/24      Direct  0   0           20.20.20.20     Loop0

下面测试：

 这里是没问题的，下面我们将60这条线路断开，看一下备份线路会不会上线

  1. AR1配置
  2.  
  3. [AR1]interface GigabitEthernet 0/0
  4.  
  5. [AR1-GigabitEthernet0/0]shutdown 
  6.  
  7. 查看路由表
  8.  
  9. 可以看到去往20.20.20.0网段的也更新了
  10.  
  11. [AR1]display  ip routing-table  
  12.  
  13. Destinations : 17       Routes : 17
  14.  
  15. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  16.  
  17. 192.168.2.1/32     Direct  0   0           127.0.0.1       InLoop0
  18. 192.168.2.255/32   Direct  0   0           192.168.2.1     GE0/1
  19. 202.20.20.0/24     Static  100 0           192.168.2.2     GE0/1
  1. AR2配置
  2.  
  3. [AR2]interface GigabitEthernet 0/0
  4.  
  5. [AR2-GigabitEthernet0/0]shutdown 
  6.  
  7. 查看路由表
  8. 这里可以看到60断开后，优先级为100的就替换上来了
  9.  
  10. [AR2]display ip routing-table  
  11.  
  12. Destinations : 17       Routes : 17
  13.  
  14. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  15. 0.0.0.0/32         Direct  0   0           127.0.0.1       InLoop0
  16. 10.10.10.0/24      Static  100 0           192.168.2.1     GE0/1
  17. 20.20.20.0/24      Direct  0   0           20.20.20.20     Loop0

下面测试

可以看到互相通信了，这里静态路由备份就完成了

静态路由与BFD联动

BFD（双向转发检测）协议提供一种轻负担，快速检测两台邻居路由器之间转发路径联通状态的方法。加快启用备份转发路径，大大减少整个网络的收敛时间，提升现有网络的性能

  1. AR1配置
  2.  
  3. 删除两条静态路由
  4.  
  5. [AR1]undo  ip route-static 20.20.20.0 24 192.168.1.2 
  6.  
  7. [AR1]undo  ip route-static 20.20.20.0 24 192.168.2.2 preference 100
  8.  
  9.  
  10. 在接口G0/0配置BFD协议
  11.  
  12. [AR1]interface GigabitEthernet 0/0
  13.  
  14. [AR1-GigabitEthernet0/0]bfd min-transmit-interval 500
  15.  
  16. [AR1-GigabitEthernet0/0]bfd min-receive-interval 500
  17.  
  18. [AR1-GigabitEthernet0/0]bfd detect-multiplier 9
  19.  
  20. 在AR1上配置bfd与备份路由
  21.  
  22. [AR1]ip route-static 20.20.20.0 24 g0/0 192.168.1.2 bfd control-packet 
  23.  
  24. [AR1]ip route-static 20.20.20.0 24 g0/1 192.168.2.2 preference  100
  25.  
  26. 查看配置结果
  27.  
  28. [AR1]display bfd session
  29.  
  30.  Total Session Num: 1     Up Session Num: 1     Init Mode: Active
  31.  
  32.  IPv4 session working in control packet mode:
  33.  
  34.  LD/RD            SourceAddr      DestAddr        State  Holdtime    Interface
  35.  2049/2049        192.168.1.1     192.168.1.2     Up     4247ms      GE0/0      
  1. AR2配置
  2.  
  3. 删除两条路由
  4.  
  5. [AR2]undo  ip route-static 10.10.10.0 24 192.168.1.1
  6.  
  7. [AR2]undo  ip route-static 10.10.10.0 24 192.168.2.1 preference  100
  8.  
  9. 在接口G0/0配置bfd协议
  10.  
  11. [AR2-GigabitEthernet0/0]bfd min-transmit-interval 500
  12.  
  13. [AR2-GigabitEthernet0/0]bfd  min-receive-interval 500
  14.  
  15. [AR2-GigabitEthernet0/0]bfd detect-multiplier 9
  16.  
  17. 配置bfd与备份路由
  18.  
  19. [AR2]ip route-static 10.10.10.0 24 G0/0 192.168.1.1 bfd control-packet 
  20.  
  21. [AR2]ip route-static 10.10.10.0 24 g0/1 192.168.2.1 preference 100
  22.  
  23. 查看配置结果
  24.  
  25.  [AR2]display bfd session 
  26.  
  27.  Total Session Num: 1     Up Session Num: 1     Init Mode: Active
  28.  
  29.  IPv4 session working in control packet mode:
  30.  
  31.  LD/RD            SourceAddr      DestAddr        State  Holdtime    Interface
  32.  2049/2049        192.168.1.2     192.168.1.1     Up     4123ms      GE0/0

测试

  1. AR1配置
  2.  
  3. 开启bfd功能调试信息开关
  4.  
  5. <AR1>debugging bfd event 
  6.  
  7. <AR1>debugging bfd scm 
  8.  
  9. <AR1>terminal debugging 
  10.  
  1. AR2配置
  2.  
  3. 关闭G0/0接口
  4.  
  5. [AR2]interface GigabitEthernet 0/0
  6.  
  7. [AR2-GigabitEthernet0/0]shutdown
  1. AR1配置
  2.  
  3. 查看静态路由
  4.  
  5. 这里启动了备份路由
  6.  
  7. [AR1]display ip routing-table  protocol static 
  8.  
  9. Summary count : 1
  10.  
  11. Static Routing table status : <Active>
  12. Summary count : 1
  13.  
  14. Destination/Mask   Proto   Pre Cost        NextHop         Interface
  15. 20.20.20.0/24      Static  100 0           192.168.2.2     GE0/1
  16.  
  17. Static Routing table status : <Inactive>

以上就是静态路由所有信息，如有问题请留言如有错误欢迎提出

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