LSW1的初始配置：
<Huawei>undo te m
Info: Current terminal monitor is off.
<Huawei>sy
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]vlan batch 10 20
Info: This operation may take a few seconds. Please wait for a moment...done.
[Huawei]port-group group-member g0/0/1 g0/0/2
[Huawei-port-group]port link-type access
[Huawei-GigabitEthernet0/0/1]port link-type access
[Huawei-GigabitEthernet0/0/2]port link-type access
[Huawei-port-group]port default vlan 10
[Huawei-GigabitEthernet0/0/1]port default vlan 10
[Huawei-GigabitEthernet0/0/2]port default vlan 10
[Huawei-port-group]port default vlan 20
[Huawei-GigabitEthernet0/0/1]port default vlan 20
[Huawei-GigabitEthernet0/0/2]port default vlan 20
[Huawei-port-group]q
[Huawei]port-group group-member g0/0/3 g0/0/4
[Huawei-port-group]port link-type trunk
[Huawei-GigabitEthernet0/0/3]port link-type trunk
[Huawei-GigabitEthernet0/0/4]port link-type trunk
Huawei-port-group]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/3]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/4]port trunk allow-pass vlan all
LSW2的初始配置：
<Huawei>un te m
Info: Current terminal monitor is off.
<Huawei>system-view
[Huawei]vlan 10
[Huawei]vlan 20
[Huawei]port-group group-member g0/0/1 g0/0/2
[Huawei-port-group]port link-type trunk
[Huawei-GigabitEthernet0/0/1]port link-type trunk
[Huawei-GigabitEthernet0/0/2]port link-type trunk
[Huawei-port-group]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[Huawei]int g0/0/3
[Huawei-GigabitEthernet0/0/3]port link-type access
[Huawei-GigabitEthernet0/0/3]port default vlan 10
LSW3的初始配置：
[Huawei]vlan 10
[Huawei]vlan 20
[Huawei]port-group group-member g0/0/1 g0/0/2
[Huawei-port-group]port link-type trunk
[Huawei-GigabitEthernet0/0/1]port link-type trunk
[Huawei-GigabitEthernet0/0/2]port link-type trunk
[Huawei-port-group]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[Huawei]int g0/0/3
[Huawei-GigabitEthernet0/0/3]port link-type access
[Huawei-GigabitEthernet0/0/3]port default vlan 20
LSW1的再配置：
[Huawei]stp mode mstp
[Huawei]stp region-configuration
[Huawei-mst-region]region-name hcnp
[Huawei-mst-region]instance 1 vlan 10
[Huawei-mst-region]instance 2 vlan 20
[Huawei-mst-region]active region-configuration
Info: This operation may take a few seconds. Please wait for a moment...done.
LSW2的再配置：
[Huawei]stp mode mstp
[Huawei]stp region-configuration
[Huawei-mst-region]region-name hcnp
[Huawei-mst-region]instance 1 vlan 10
[Huawei-mst-region]instance 2 vlan 20
[Huawei-mst-region]active region-configuration
Info: This operation may take a few seconds. Please wait for a moment...done.
[Huawei-mst-region]q
[Huawei]stp instance 1 priority 0
[Huawei]stp instance 2 priority 4096
LSW3的再配置：
[Huawei]stp mode mstp
[Huawei]stp region-configuration
[Huawei-mst-region]region-name hcnp
[Huawei-mst-region]instance 1 vlan 10
[Huawei-mst-region]instance 2 vlan 20
[Huawei-mst-region]active region-configuration
Info: This operation may take a few seconds. Please wait for a moment...done.
[Huawei-mst-region]q
[Huawei]stp instance 1 priority 4096
[Huawei]stp instance 2 priority 0
PC机设置如图：
主要是PC1与PC3在同一个网段
主要是PC2与PC4在同一个网段
这时
LWS2成为vlan 10 的主根，vlan 20 的次根
LWS3成为vlan 20 的主根，vlan 10 的次根
根据优先级走向如图
发生故障时走向图：
另一个发生故障时走向图：
也可以通过抓包来进行查看，有不好的地方可以再下面留言啊
我继续完善下 谢谢啦
原文地址：http://blog.51cto.com/13709831/2122190
