lsw1配置
<Huawei>sys
[Huawei]sysn
[Huawei]sysname lsw1
[lsw1]vlan batch 10 20 30 40
[lsw1-GigabitEthernet0/0/1]port link-type trunk
[lsw1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[lsw1-GigabitEthernet0/0/2]port link-type trunk
[lsw1-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[lsw1-GigabitEthernet0/0/2]q
[lsw1]stp mode mstp
[lsw1]stp region-configuration
[lsw1-mst-region]instance 1 vlan 10 20
[lsw1-mst-region]instance 2 vlan 30 40
[lsw1-mst-region]active region-configuration
[lsw1-mst-region]q
[lsw1]stp instance 1 root primary
[lsw1]stp instance 2 root secondary
lsw2配置
<Huawei>sys
[Huawei]sysn
[Huawei]sysname lsw2
[lsw2]vlan batch 10 20 30 40
[lsw2-GigabitEthernet0/0/1]port link-type trunk
[lsw2-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[lsw2-GigabitEthernet0/0/2]port link-type trunk
[lsw2-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[lsw2-GigabitEthernet0/0/2]q
[lsw2]stp mode mstp
[lsw1]stp region-configuration
[lsw2-mst-region]instance 1 vlan 10 20
[lsw2-mst-region]instance 2 vlan 30 40
[lsw2-mst-region]active region-configuration
[lsw2-mst-region]q
[lsw2]stp instance 1 root secondary
[lsw2]stp instance 2 root primary
lsw3配置
<Huawei>sys
[Huawei]sysn
[Huawei]sysname lsw3
[lsw3]vlan batch 10 20 30 40
[lsw3-GigabitEthernet0/0/1]port link-type trunk
[lsw3-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[lsw3-GigabitEthernet0/0/2]port link-type trunk
[lsw3-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[lsw3-GigabitEthernet0/0/2]q
[lsw3]stp mode mstp
[lsw3]stp region-configuration
[lsw3-mst-region]instance 1 vlan 10 20
[lsw3-mst-region]instance 2 vlan 30 40
[lsw3-mst-region]active region-configuration
[lsw3-mst-region]q
lsw3验证
发现g0/0/2堵塞