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Instance Vlans Mapped
0 1 to 9, 11 to 19, 21 to 29, 31 to 4094
1 10
2 20
3 30
2) Configuration on Device B
# Enter MST region view.
<DeviceB> system-view
[DeviceB] stp region-configuration
# Configure the region name, VLAN-to-MSTI 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 2 vlan 20
[DeviceB-mst-region] instance 3 vlan 30
[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 MSTI 3.
[DeviceB] stp instance 3 root primary
# Enable MSTP globally.
[DeviceB] stp enable
# View the MST region configuration information that has taken effect.
[DeviceB] display stp region-configuration
Oper configuration
Format selector :0
Region name :example
Revision level :0
Instance Vlans Mapped
0 1 to 9, 11 to 19, 21 to 29, 31 to 4094
1 10
2 20
3 30
3) Configuration on Device C.
# Enter MST region view.
<DeviceC> system-view
[DeviceC] stp region-configuration
[DeviceC-mst-region] region-name example
# Configure the region name, VLAN-to-MSTI mappings and revision level of the MST region.
[DeviceC-mst-region] instance 1 vlan 10
[DeviceC-mst-region] instance 2 vlan 20