H3C Technologies H3C S5120 Series Switches - Manual (Page 206)

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system-view
[DeviceC] stp region-configuration
[DeviceC-mst-region] region-name example
[DeviceC-mst-region] instance 1 vlan 10
[DeviceC-mst-region] instance 2 vlan 20
[DeviceC-mst-region] revision-level 0
# Activate MST region configuration.
[DeviceC-mst-region] active region-configuration
[DeviceC-mst-region] quit
# Specify the current device as the root bridge of MSTI 2.
[DeviceC] stp instance 2 root primary
# Enable MSTP globally.
[DeviceC] stp enable
5) Configuration on Device D.
# Enter MST region view, configure the MST region name as example, map VLAN 20 and VLAN 30 to
MSTI 2, and MSTI 3 respectively, and configure the revision level of the MST region as 0.
system-view
[DeviceD] stp region-configuration
[DeviceD-mst-region] region-name example
[DeviceD-mst-region] instance 2 vlan 20
[DeviceD-mst-region] instance 3 vlan 30
[DeviceD-mst-region] revision-level 0
# Activate MST region configuration.
[DeviceD-mst-region] active region-configuration
[DeviceD-mst-region] quit
# Enable MSTP globally.
[DeviceD] stp enable
6) Verifying the configurations
You can use the display stp brief command to display brief spanning tree information on each device
after the network is stable.
# Display brief spanning tree information on Device A.
[DeviceA] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet1/0/1 ALTE DISCARDING NONE
0 GigabitEthernet1/0/2 DESI FORWARDING NONE
0 GigabitEthernet1/0/3 ROOT FORWARDING NONE
1 GigabitEthernet1/0/1 DESI FORWARDING NONE
1 GigabitEthernet1/0/3 DESI FORWARDING NONE
3 GigabitEthernet1/0/2 DESI FORWARDING NONE
3 GigabitEthernet1/0/3 ROOT FORWARDING NONE
# Display brief spanning tree information on Device B.
[DeviceB] display stp brief
MSTID Port Role STP State Protection