3Com WX3000 Configure Switch B # Enter MST region view, # Configure the MST region

[SwitchA] stp instance 1 root primary

2)Configure Switch B

# Enter MST region view.

<SwitchB> system-view

[SwitchB] stp region-configuration

# Configure the region name, VLAN-to-MSTI mapping table, and revision level for the MST region.

[SwitchB-mst-region] region-name example

[SwitchB-mst-region] instance 1 vlan 10

[SwitchB-mst-region] instance 3 vlan 30

[SwitchB-mst-region] instance 4 vlan 40

[SwitchB-mst-region] revision-level 0

# Activate the settings of the MST region manually.

[SwitchB-mst-region] active region-configuration

# Specify Switch B as the root bridge of spanning tree instance 3.

[SwitchB] stp instance 3 root primary

3)Configure Switch C.

# Enter MST region view.

<SwitchC> system-view

[SwitchC] stp region-configuration

# Configure the MST region.

[SwitchC-mst-region] region-name example

[SwitchC-mst-region] instance 1 vlan 10

[SwitchC-mst-region] instance 3 vlan 30

[SwitchC-mst-region] instance 4 vlan 40

[SwitchC-mst-region] revision-level 0

# Activate the settings of the MST region manually.

[SwitchC-mst-region] active region-configuration

# Specify Switch C as the root bridge of spanning tree instance 4.

[SwitchC] stp instance 4 root primary

4)Configure Switch D

# Enter MST region view.

<SwitchD> system-view

[SwitchD] stp region-configuration

# Configure the MST region.

[SwitchD-mst-region] region-name example

[SwitchD-mst-region] instance 1 vlan 10

[SwitchD-mst-region] instance 3 vlan 30

[SwitchD-mst-region] instance 4 vlan 40

[SwitchD-mst-region] revision-level 0

# Activate the settings of the MST region manually.

[SwitchD-mst-region] active region-configuration

1-48