华为设备配置BFD状态与接口状态联动

1. 配置LSW1和LSW2的直连接口IP地址
   [LSW1]vlan 10
   [LSW1-GigabitEthernet0/0/3]port link-type hybrid
   [LSW1-GigabitEthernet0/0/3]port hybrid pvid vlan 10
   [LSW1-GigabitEthernet0/0/3]port hybrid untagged vlan 10
   [LSW1]int Vlanif 10
   [LSW1-Vlanif10]ip add 10.1.1.1 24
   [LSW2]vlan batch 10
   [LSW2-GigabitEthernet0/0/4]port link-type hybrid
   [LSW2-GigabitEthernet0/0/4]port hybrid pvid vlan 10
   [LSW2-GigabitEthernet0/0/4]port hybrid untagged vlan 10
   [LSW2-Vlanif10]ip add 10.1.1.2 24

2. 配置BFD单跳检测
   [LSW1]bfd
   [LSW1]bfd 1to2 bind peer-ip default-ip interface GigabitEthernet 0/0/3
   [LSW1-bfd-session-1to2]discriminator local 10
   [LSW1-bfd-session-1to2]discriminator remote 20
   [LSW1-bfd-session-1to2]commit
   [LSW2]bfd
   [LSW2]bfd 2to1 bind peer-ip default-ip interface GigabitEthernet 0/0/4
   [LSW2-bfd-session-2to1]discriminator local 20
   [LSW2-bfd-session-2to1]discriminator remote 10
   [LSW2-bfd-session-2to1]commit
   

3. 配置BFD状态与接口状态联动
   [LSW1]bfd 1to2
   [LSW1-bfd-session-1to2]process-interface-status
   [LSW2]bfd 2to1
   [LSW2-bfd-session-2to1]process-interface-status

4. 验证配置
   

对LSW3的GE0/0/4接口执行shutdown操作，让BFD状态Down
[LSW3-GigabitEthernet0/0/4]shutdown