MSTP的配置拓扑

1.交换机端口配置

<Huawei>system-view
[Huawei]sysname SWA
[SWA]int g0/0/1
[SWA-GigabitEthernet0/0/1]port link-type trunk
[SWA-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[SWA-GigabitEthernet0/0/1]int g0/0/2
[SWA-GigabitEthernet0/0/2]port link-type trunk
[SWA-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[SWA-GigabitEthernet0/0/2]dis this
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
#
return

<Huawei>system-view
[Huawei]sysname SWB
[SWB-GigabitEthernet0/0/1]
[SWB-GigabitEthernet0/0/1]port link-type trunk
[SWB-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[SWB-GigabitEthernet0/0/1]int g0/0/2
[SWB-GigabitEthernet0/0/2]port link-type trunk
[SWB-GigabitEthernet0/0/2]port trunk allow-pass vlan all

<Huawei>system-view
[Huawei]sysname SWC
[SWC-GigabitEthernet0/0/1]int g0/0/1
[SWC-GigabitEthernet0/0/1]port link-type trunk
[SWC-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[SWC-GigabitEthernet0/0/1]int g0/0/2
[SWC-GigabitEthernet0/0/2]port link-type trunk
[SWC-GigabitEthernet0/0/2]port trunk allow-pass vlan all

2.VLAN的配置

[SWA-GigabitEthernet0/0/2]q
[SWA]vlan batch 10 20

[SWB-GigabitEthernet0/0/2]q
[SWB]vlan batch 10 20

[SWC-GigabitEthernet0/0/2]q
[SWC]vlan batch 10 20

3.MST实例的相关配置
进入了MST域视图，并指定域使用的名称，同一个MST域中的交换机上面都要配置相同的域名，并使用instance 10 vlan 10，instance 20 vlan 20创建了实例和VLAN的映射关系，如果在配置时立即应用这些操作，容易引起拓扑震荡，所以要使用命令active region-configuration进行激活。

[SWA]stp region-configuration
[SWA-mst-region]region-name mst-region
[SWA-mst-region]instance 10 vlan 10
[SWA-mst-region]instance 20 vlan 20
[SWA-mst-region]active region-configuration

[SWB]stp region-configuration
[SWB-mst-region]region-name mst-region
[SWB-mst-region]instance 10 vlan 10
[SWB-mst-region]instance 20 vlan 20
[SWB-mst-region]active region-configuration

[SWC]stp region-configuration
[SWC-mst-region]region-name mst-region
[SWC-mst-region]instance 10 vlan 10
[SWC-mst-region]instance 20 vlan 20
[SWC-mst-region]active region-configuration

4.为每个实例指定根网桥

[SWA]stp instance 10 root secondary
[SWA]stp instance 20 root primary 

[SWC]stp instance 10 root primary
[SWC]stp instance 20 root secondary

5.在SWA上查看MSTP区域

[SWA]stp region-configuration   
[SWA-mst-region]check region-configuration 
 Admin configuration
   Format selector    :0             
   Region name        :mst-region             
   Revision level     :0

   Instance   VLANs Mapped
      0       1 to 9, 11 to 19, 21 to 4094
     10       10
     20       20

check region-configuration 可以查看区域名称以及实例和VLAN的映射关系。

6.查看STP汇总信息

SWA

SWB

SWC

7.最后得到的拓扑图

VLAN 10

VLAN 20