4.1 问题

1）如图配置设备的IP地址

2）在R1和R3之间建立BFD会话，快速检测链路故障

3）查看R1和R3之间的BFD会话状态的信息

4.2 方案

搭建实验环境，如图-4所示。

 

步骤

实现此案例需要按照如下步骤进行。

1）配置R1

1. Huawei>system-view
2. [Huawei]sysname R1
3. [R1]interface GigabitEthernet 0/0/0
4. [R1-GigabitEthernet0/0/0]ip address 192.168.12.1 24
5. [R1-GigabitEthernet0/0/0]quit
6. [R1]ip route-static 192.168.23.0 24 192.168.12.2

2）配置R2

1. <Huawei>system-view     
2. [Huawei]sysname R2
3. [R2]interface GigabitEthernet 0/0/1
4. [R2-GigabitEthernet0/0/1]ip address 192.168.12.2 24
5. [R2-GigabitEthernet0/0/1]quit
6. [R2]interface GigabitEthernet 0/0/0
7. [R2-GigabitEthernet0/0/0]ip address 192.168.23.2 24
8. [R2-GigabitEthernet0/0/0]quit

3）配置R3

1. <Huawei>system-view     
2. [Huawei]sysname R3
3. [R3]interface GigabitEthernet 0/0/1
4. [R3-GigabitEthernet0/0/1]ip address 192.168.23.3 24
5. [R3-GigabitEthernet0/0/1]quit
6. [R3]ip route-static 192.168.12.0 24 192.168.23.2

4）配置BFD-R1

1. [R1]bfd
2. [R1-bfd]quit
3. [R1]bfd 13 bind peer 192.168.23.3
4. [R1-bfd-session-13]discriminator local 1
5. [R1-bfd-session-13]discriminator remote 3
6. [R1-bfd-session-13]commit
7. [R1-bfd-session-13]quit

5）配置BFD-R3

1. [R3]bfd
2. [R3-bfd]quit
3. [R3]bfd 13 bind peer 192.168.12.1
4. [R3-bfd-session-13]discriminator local 3
5. [R3-bfd-session-13]discriminator remote 1
6. [R3-bfd-session-13]commit
7. [R3-bfd-session-13]quit

6）验证 BFD 会话

1. [R1]display bfd session all
2. --------------------------------------------------------------------------------
3. Local Remote PeerIpAddr State Type InterfaceName
4. --------------------------------------------------------------------------------
5. 1 3 192.168.23.3 Up S_IP_PEER -
6. --------------------------------------------------------------------------------
7. Total UP/DOWN Session Number : 1/0
9. [R3]display bfd session all
10. --------------------------------------------------------------------------------
11. Local Remote PeerIpAddr State Type InterfaceName
12. --------------------------------------------------------------------------------
13. 3 1 192.168.12.1 Up S_IP_PEER -
14. --------------------------------------------------------------------------------
15. Total UP/DOWN Session Number : 1/0