3Com Switch 4800G 24-Port Configuration Manual page 237

Configuration procedure
1 Configuration on Device A
# Enter MST region view.
<DeviceA> system-view
[DeviceA] stp region-configuration
# Configure the region name, VLAN-to-instance mappings and revision level of the
MST region.
[DeviceA-mst-region] region-name example
[DeviceA-mst-region] instance 1 vlan 10
[DeviceA-mst-region] instance 3 vlan 30
[DeviceA-mst-region] instance 4 vlan 40
[DeviceA-mst-region] revision-level 0
# Activate MST region configuration manually.
[DeviceA-mst-region] active region-configuration
[DeviceA-mst-region] quit
# Define Device A as the root bridge of MST instance 1.
[DeviceA] stp instance 1 root primary
# View the MST region configuration information that has taken effect.
[DeviceA] display stp region-configuration
Oper configuration
Format selector
Region name
Revision level
Instance Vlans Mapped
0 1 to 9, 11 to 29, 31 to 39, 41 to 4094
1 10
3 30
4 40
2 Configuration on Device B
# Enter MST region view.
<DeviceB> system-view
[DeviceB] stp region-configuration
# Configure the region name, VLAN-to-instance mappings and revision level of the
MST region.
[DeviceB-mst-region] region-name example
[DeviceB-mst-region] instance 1 vlan 10
[DeviceB-mst-region] instance 3 vlan 30
[DeviceB-mst-region] instance 4 vlan 40
[DeviceB-mst-region] revision-level 0
# Activate MST region configuration manually.
[DeviceB-mst-region] active region-configuration
[DeviceB-mst-region] quit
# Define Device B as the root bridge of MST instance 3.
[DeviceB] stp instance 3 root primary
# View the MST region configuration information that has taken effect.
MSTP Configuration Example
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