BFD和静态路由

一、配IP

AR1

[AR1]int g0/0/2
[AR1-GigabitEthernet0/0/2]ip add 192.168.1.254 24
[AR1-GigabitEthernet0/0/2]int g0/0/0
[AR1-GigabitEthernet0/0/0]ip add 192.168.12.1 24
[AR1-GigabitEthernet0/0/0]int g0/0/1
[AR1-GigabitEthernet0/0/1]ip add 192.168.13.1 24
[AR1-GigabitEthernet0/0/1]quit

[AR1]ip route-static 192.168.2.0 24 192.168.12.2
[AR1]ip route-static 192.168.2.0 24 192.168.13.2 preference 100

AR2

[AR2]int g0/0/0
[AR2-GigabitEthernet0/0/0]ip add 192.168.12.2 24
[AR2-GigabitEthernet0/0/0]int g0/0/1
[AR2-GigabitEthernet0/0/1]ip add 192.168.24.2 24
[AR2-GigabitEthernet0/0/1]quit

[AR2]ip route-static 192.168.1.0 24 192.168.12.1
[AR2]ip route-static 192.168.2.0 24 192.168.24.4

AR3

[AR3]int g0/0/0
[AR3-GigabitEthernet0/0/0]ip add 192.168.13.3 24
[AR3-GigabitEthernet0/0/0]int g0/0/1
[AR3-GigabitEthernet0/0/1]ip add 192.168.34.3 24
[AR3-GigabitEthernet0/0/1]quit

[AR3]ip route-static 192.168.1.0 24 192.168.13.1
[AR3]ip route-static 192.168.2.0 24 192.168.34.4

AR4

[AR4]int g0/0/0
[AR4-GigabitEthernet0/0/0]ip add 192.168.24.4 24
[AR4-GigabitEthernet0/0/0]int g0/0/1
[AR4-GigabitEthernet0/0/1]ip add 192.168.34.4 24
[AR4-GigabitEthernet0/0/1]int g0/0/2
[AR4-GigabitEthernet0/0/2]ip add 192.168.2.254 24
[AR4-GigabitEthernet0/0/2]quit

[AR4]ip route-static 192.168.1.0 24 192.168.24.2
[AR4]ip route-static 192.168.1.0 24 192.168.34.3 preference 100

二、BFD

AR1
```
[AR1]ip route-static 192.168.24.0 24 192.168.12.2
[AR1]ip route-static 192.168.34.0 24 192.168.13.3

[AR1]bfd
[AR1-bfd]quit
[AR1]bfd ntd2407 bind peer-ip 192.168.24.4
[AR1-bfd-session-ntd2407]discriminator local 1
[AR1-bfd-session-ntd2407]discriminator remote 4
[AR1-bfd-session-ntd2407]min-tx-interval 10
[AR1-bfd-session-ntd2407]min-rx-interval 10
[AR1-bfd-session-ntd2407]commit
[AR1-bfd-session-ntd2407]quit

[AR1]ip route-static 192.168.2.0 24 192.168.12.2 track bfd ntd2407
```
- 注解：
  1. [AR1]bfd：进入BFD配置模式
  2. [AR1-bfd]quit：退出BFD配置模式
  3. [AR1]bfd ntd2407 bind peer-ip 192.168.24.4：创建一个名为ntd2407的BFD会话，并将其绑定到对端IP地址192.168.24.4
  4. [AR1-bfd-session-ntd2407]discriminator local 1：为本地设备设置BFD会话的鉴别器值为1
  5. [AR1-bfd-session-ntd2407]discriminator remote 4：设置对端设备BFD会话的鉴别器值为4
  6. [AR1-bfd-session-ntd2407]min-tx-interval 10：设置BFD会话的最小发送间隔为10毫秒
  7. [AR1-bfd-session-ntd2407]min-rx-interval 10：设置BFD会话的最小接收间隔为10毫秒
  8. [AR1-bfd-session-ntd2407]commit：提交BFD会话的配置，使其生效
  9. ip route-static 192.168.2.0 24 192.168.12.2 track bfd ntd2407：BFD与静态路由联动
AR4
```
[AR4]ip route-static 192.168.12.0 24 192.168.24.2
[AR4]ip route-static 192.168.13.0 24 192.168.34.3

[AR4]bfd
[AR4-bfd]quit
[AR4]bfd ntd2407 bind peer-ip 192.168.12.1
[AR4-bfd-session-ntd2407]discriminator local 4
[AR4-bfd-session-ntd2407]discriminator remote 1
[AR4-bfd-session-ntd2407]min-tx-interval 10
[AR4-bfd-session-ntd2407]min-rx-interval 10
[AR4-bfd-session-ntd2407]commit
```
- 注解：
  1. [AR1]bfd：进入BFD配置模式
  2. [AR1-bfd]quit：退出BFD配置模式
  3. [AR1]bfd ntd2407 bind peer-ip 192.168.12.1：创建一个名为ntd2407的BFD会话，并将其绑定到对端IP地址192.168.12.1
  4. [AR1-bfd-session-ntd2407]discriminator local 4：为本地设备设置BFD会话的鉴别器值为4
  5. [AR1-bfd-session-ntd2407]discriminator remote 1：设置对端设备BFD会话的鉴别器值为1
  6. [AR1-bfd-session-ntd2407]min-tx-interval 10：设置BFD会话的最小发送间隔为10毫秒
  7. [AR1-bfd-session-ntd2407]min-rx-interval 10：设置BFD会话的最小接收间隔为10毫秒
  8. [AR1-bfd-session-ntd2407]commit：提交BFD会话的配置，使其生效

三、功能性测试

断连测试

查看BFD信息

[AR1]dis bfd session all
--------------------------------------------------------------------------------
Local Remote     PeerIpAddr      State     Type        InterfaceName            
--------------------------------------------------------------------------------

1     4          192.168.24.4    Down      S_IP_PEER         -                  
--------------------------------------------------------------------------------
     Total UP/DOWN Session Number : 0/1

PING
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BFD和静态路由

一、配IP

二、BFD

三、功能性测试

4.9 KiB

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