4-41
# 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
0 GigabitEthernet1/0/1 DESI FORWARDING NONE
0 GigabitEthernet1/0/2 DESI FORWARDING NONE
0 GigabitEthernet1/0/3 DESI FORWARDING NONE
1 GigabitEthernet1/0/2 DESI FORWARDING NONE
1 GigabitEthernet1/0/3 ROOT FORWARDING NONE
3 GigabitEthernet1/0/1 DESI FORWARDING NONE
3 GigabitEthernet1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet1/0/1 DESI FORWARDING NONE
0 GigabitEthernet1/0/2 ROOT FORWARDING NONE
0 GigabitEthernet1/0/3 DESI FORWARDING NONE
1 GigabitEthernet1/0/1 ROOT FORWARDING NONE
1 GigabitEthernet1/0/2 ALTE DISCARDING NONE
4 GigabitEthernet1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet1/0/1 ROOT FORWARDING NONE
0 GigabitEthernet1/0/2 ALTE DISCARDING NONE
0 GigabitEthernet1/0/3 ALTE DISCARDING NONE
3 GigabitEthernet1/0/1 ROOT FORWARDING NONE
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