H3C S6850 Series Configuration Guide

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# Enable the spanning tree feature globally.
[DeviceD] stp global enable
Verifying the configuration
In this example, Device B has the lowest root bridge ID. As a result, Device B is elected as the root
bridge in MSTI 0.
When the network is stable, you can use the
display stp brief command to display brief
spanning tree information on each device.
# Display brief spanning tree information on Device A.
[DeviceA] display stp brief
MST ID Port Role STP State Protection
0 Twenty-FiveGigE1/0/1 ALTE DISCARDING NONE
0 Twenty-FiveGigE1/0/2 DESI FORWARDING NONE
0 Twenty-FiveGigE1/0/3 ROOT FORWARDING NONE
1 Twenty-FiveGigE1/0/1 DESI FORWARDING NONE
1 Twenty-FiveGigE1/0/3 DESI FORWARDING NONE
3 Twenty-FiveGigE1/0/2 DESI FORWARDING NONE
3 Twenty-FiveGigE1/0/3 ROOT FORWARDING NONE
# Display brief spanning tree information on Device B.
[DeviceB] display stp brief
MST ID Port Role STP State Protection
0 Twenty-FiveGigE1/0/1 DESI FORWARDING NONE
0 Twenty-FiveGigE1/0/2 DESI FORWARDING NONE
0 Twenty-FiveGigE1/0/3 DESI FORWARDING NONE
1 Twenty-FiveGigE1/0/2 DESI FORWARDING NONE
1 Twenty-FiveGigE1/0/3 ROOT FORWARDING NONE
3 Twenty-FiveGigE1/0/1 DESI FORWARDING NONE
3 Twenty-FiveGigE1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
MST ID Port Role STP State Protection
0 Twenty-FiveGigE1/0/1 DESI FORWARDING NONE
0 Twenty-FiveGigE1/0/2 ROOT FORWARDING NONE
0 Twenty-FiveGigE1/0/3 DESI FORWARDING NONE
1 Twenty-FiveGigE1/0/1 ROOT FORWARDING NONE
1 Twenty-FiveGigE1/0/2 ALTE DISCARDING NONE
4 Twenty-FiveGigE1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
MST ID Port Role STP State Protection
0 Twenty-FiveGigE1/0/1 ROOT FORWARDING NONE
0 Twenty-FiveGigE1/0/2 ALTE DISCARDING NONE
0 Twenty-FiveGigE1/0/3 ALTE DISCARDING NONE
3 Twenty-FiveGigE1/0/1 ROOT FORWARDING NONE
3 Twenty-FiveGigE1/0/2 ALTE DISCARDING NONE
4 Twenty-FiveGigE1/0/3 ROOT FORWARDING NONE
Based on the output, you can draw each MSTI mapped to each VLAN, as shown in Figure 23.

H3C S6850 Series Specifications

General

Brand	H3C
Model	S6850 Series
Category	Switch
Language	English