1. 使能LSW3和LSW4的生成树计算功能
[LSW3]vlan 100
[LSW3]stp enable
[LSW3-GigabitEthernet0/0/1]port link-type hybrid
[LSW3-GigabitEthernet0/0/1]port hybrid pvid vlan 100
[LSW3-GigabitEthernet0/0/1]port hybrid untagged vlan 100
[LSW4]vlan 100
[LSW4]stp enable
[LSW4-GigabitEthernet0/0/1]port link-type hybrid
[LSW4-GigabitEthernet0/0/1]port hybrid pvid vlan 100
[LSW4-GigabitEthernet0/0/1]port hybrid untagged vlan 100
2.使能LSW1和LSW2二层协议透明传输功能
[LSW1]vlan 100
[LSW1-GigabitEthernet0/0/2]port link-type hybrid
[LSW1-GigabitEthernet0/0/2]port hybrid pvid vlan 100
[LSW1-GigabitEthernet0/0/2]port hybrid untagged vlan 100
[LSW1-GigabitEthernet0/0/2]l2protocol-tunnel stp enable
[LSW1-GigabitEthernet0/0/1]port link-type trunk
[LSW1-GigabitEthernet0/0/1]port trunk allow-pass vlan 100
[LSW2]vlan 100
[LSW2-GigabitEthernet0/0/1]port link-type trunk
[LSW2-GigabitEthernet0/0/1]port trunk allow-pass vlan 100
[LSW2-GigabitEthernet0/0/2]port link-type hybrid
[LSW2-GigabitEthernet0/0/2]port hybrid pvid vlan 100
[LSW2-GigabitEthernet0/0/2]port hybrid untagged vlan 100
[LSW2-GigabitEthernet0/0/2]l2protocol-tunnel stp enable
3. 配置LSW1和LSW2替换接收到LSW3和LSW4的STP协议报文的目的MAC地址
[LSW1]l2protocol-tunnel stp group-mac 0100-0100-0100
[LSW2]l2protocol-tunnel stp group-mac 0100-0100-0100
4. 配置LSW4的优先级为4096
[LSW4]stp priority 4096
5.检查配置
