组网图MSTP典型配置组网图：

看第一个图，配置相应的vlan，然后接口trunk，放入相应的vlan

A:

[SWA]stp region-configuration

[SWA-mst-region]region-name example

[SWA-mst-region]instance 1 vlan 10

[SWA-mst-region]instance 3 vlan 30

[SWA-mst-region]instance 4 vlan 40

[SWA-mst-region]revision-level 0

[SWA-mst-region]active region-configuration   #激活MST域的配置

[SWA-mst-region]quit

[SWA]stp instance 1 root primary   #配置本设备为MSTI1的根桥

[SWA]stp global enable   #全局开启生成树协议

B:

[SWB]stp region-configuration

[SWB-mst-region]region-name example

[SWB-mst-region]instance 1 vlan 10

[SWB-mst-region]instance 3 vlan 30

[SWB-mst-region]instance 4 vlan 40

[SWB-mst-region]revision-level 0

[SWB-mst-region]active region-configuration   #激活MST域的配置

[SWB-mst-region]quit

[SWB]stp instance 3 root primary   #配置本设备为MSTI3的根桥

[SWB]stp global enable   #全局开启生成树协议

C:

[SWC]stp region-configuration

[SWC-mst-region]region-name example

[SWC-mst-region]instance 1 vlan 10

[SWC-mst-region]instance 3 vlan 30

[SWC-mst-region]instance 4 vlan 40

[SWC-mst-region]revision-level 0

[SWC-mst-region]active region-configuration   #激活MST域的配置

[SWC-mst-region]quit

[SWC]stp instance 4 root primary   #配置本设备为MSTI4的根桥

[SWC]stp global enable   #全局开启生成树协议

​

D:

[SWD]stp region-configuration

[SWD-mst-region]region-name example

[SWD-mst-region]instance 1 vlan 10

[SWD-mst-region]instance 3 vlan 30

[SWD-mst-region]instance 4 vlan 40

[SWD-mst-region]revision-level 0

[SWD-mst-region]active region-configuration   #激活MST域的配置

[SWD-mst-region]quit

[SWD]stp global enable   #全局开启生成树协议

​

测试：

这是正常的，要是把端口禁掉，sw2就会变成根桥，然后再开启端口，根桥就回来了

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