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
