R3166-R3206-HP High-End Firewalls Network Management Configuration Guide-6PW101

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[Firewall] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet0/1 DESI FORWARDING NONE
0 GigabitEthernet0/2 ROOT FORWARDING NONE
0 GigabitEthernet0/3 DESI FORWARDING NONE
1 GigabitEthernet0/1 ROOT FORWARDING NONE
1 GigabitEthernet0/2 ALTE DISCARDING NONE
4 GigabitEthernet0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
MSTID Port Role STP State Protection
0 Ethernet1/1 ROOT FORWARDING NONE
0 Ethernet1/2 ALTE DISCARDING NONE
0 Ethernet1/3 ALTE DISCARDING NONE
3 Ethernet1/1 ROOT FORWARDING NONE
3 Ethernet1/2 ALTE DISCARDING NONE
4 Ethernet1/3 ROOT FORWARDING NONE
Based on the output, you can draw the MSTI mapped to each VLAN, as shown in Figure 40.
Figure 40 MSTIs mapped to different VLANs
Configuration guidelines
Follow these guidelines when configuring MSTP:
• Two devices belong to the same MST region only if they are interconnected through physical links,
and share the same region name, the same MSTP revision level, and the same VLAN-to-MSTI
mappings.