华为设备配置VRRP与BFD联动实现快速切换

1. 配置设备各接口的IP地址
   [LSW1]vlan batch 10 20
   [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-GigabitEthernet0/0/4]port link-type hybrid
   [LSW1-GigabitEthernet0/0/4]port hybrid untagged vlan 20
   [LSW1-GigabitEthernet0/0/4]port hybrid pvid vlan 20
   [LSW1-Vlanif10]ip add 10.1.1.1 24
   [LSW1-Vlanif20]ip add 10.1.2.1 24
   [LSW2]vlan batch 10 30
   [LSW2-GigabitEthernet0/0/3]port link-type hybrid
   [LSW2-GigabitEthernet0/0/3]port hybrid untagged vlan 10
   [LSW2-GigabitEthernet0/0/3]port hybrid pvid vlan 10
   [LSW2-GigabitEthernet0/0/4]port link-type hybrid
   [LSW2-GigabitEthernet0/0/4]port hybrid pvid vlan 30
   [LSW2-GigabitEthernet0/0/4]port hybrid untagged vlan 30
   [LSW2-Vlanif10]ip add 10.1.1.2 24
   [LSW2-Vlanif30]ip add 10.1.3.2 24
   [LSW4]vlan batch 20 30 100
   [LSW4-GigabitEthernet0/0/1]port link-type hybrid
   [LSW4-GigabitEthernet0/0/1]port hybrid untagged vlan 20
   [LSW4-GigabitEthernet0/0/1]port hybrid pvid vlan 20
   [LSW4-GigabitEthernet0/0/2]port link-type hybrid
   [LSW4-GigabitEthernet0/0/2]port hybrid pvid vlan 30
   [LSW4-GigabitEthernet0/0/2]port hybrid untagged vlan 30
   [LSW4-GigabitEthernet0/0/3]port link-type hybrid
   [LSW4-GigabitEthernet0/0/3]port hybrid untagged vlan 100
   [LSW4-GigabitEthernet0/0/3]port hybrid pvid vlan 100
   [LSW4-Vlanif20]ip add 10.1.2.4 24
   [LSW4-Vlanif30]ip add 10.1.3.4 24
   [LSW4-Vlanif100]ip add 172.16.1.4 24

2. 配置LSW3的二层转发功能
   [LSW3]vlan batch 10
   [LSW3-GigabitEthernet0/0/1]port link-type hybrid
   [LSW3-GigabitEthernet0/0/1]port hybrid untagged vlan 10
   [LSW3-GigabitEthernet0/0/1]port hybrid pvid vlan 10
   [LSW3-GigabitEthernet0/0/2]port link-type hybrid
   [LSW3-GigabitEthernet0/0/2]port hybrid untagged vlan 10
   [LSW3-GigabitEthernet0/0/2]port hybrid pvid vlan 10

3. 配置OSPF协议进行互联
   [LSW1]ospf 1
   [LSW1-ospf-1]area 0
   [LSW1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
   [LSW1-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
   [LSW2]ospf 1
   [LSW2-ospf-1]area 0
   [LSW2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
   [LSW2-ospf-1-area-0.0.0.0]network 10.1.3.0 0.0.0.255
   [LSW4]ospf 1
   [LSW4-ospf-1]area 0
   [LSW4-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.255
   [LSW4-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
   [LSW4-ospf-1-area-0.0.0.0]network 10.1.3.0 0.0.0.255

4. 配置VRRP备份组
   [LSW1]int Vlanif 10
   [LSW1-Vlanif10]vrrp vrid 1 virtual-ip 10.1.1.254
   [LSW1-Vlanif10]vrrp vrid 1 priority 120
   [LSW1-Vlanif10]vrrp vrid 1 preempt-mode timer delay 20
   [LSW1-Vlanif10]vrrp vrid 2 virtual-ip 10.1.1.253
   [LSW2]int Vlanif 10
   [LSW2-Vlanif10]vrrp vrid 2 virtual-ip 10.1.1.253
   [LSW2-Vlanif10]vrrp vrid 2 priority 120
   [LSW2-Vlanif10]vrrp vrid 2 preempt-mode timer delay 20
   [LSW2-Vlanif10]vrrp vrid 1 virtual-ip 10.1.1.254

5. 配置静态BFD会话
   [LSW1]bfd
   [LSW1]bfd 1to2 bind peer-ip 10.1.1.2 interface Vlanif 10
   [LSW1-bfd-session-1to2]discriminator local 1
   [LSW1-bfd-session-1to2]discriminator remote 2
   [LSW1-bfd-session-1to2]min-tx-interval 100
   [LSW1-bfd-session-1to2]min-rx-interval 100
   [LSW1-bfd-session-1to2]commit
   [LSW2]bfd
   [LSW2]bfd 2to1 bind peer-ip 10.1.1.1 interface Vlanif 10
   [LSW2-bfd-session-2to1]discriminator local 2
   [LSW2-bfd-session-2to1]discriminator remote 1
   [LSW2-bfd-session-2to1]min-rx-interval 100
   [LSW2-bfd-session-2to1]min-tx-interval 100
   [LSW2-bfd-session-2to1]commit
   
   

6. 配置VRRP与BFD联动功能
   [LSW1]int Vlanif 10
   [LSW1-Vlanif10]vrrp vrid 2 track bfd-session 1 increased 40
   [LSW2]int Vlanif 10
   [LSW2-Vlanif10]vrrp vrid 1 track bfd-session 2 increased 40

7. 验证配置
   
   

[LSW1-GigabitEthernet0/0/3]shutdown