R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

95
1 Ten-GigabitEthernet1/0/1 ROOT FORWARDING NONE
1 Ten-GigabitEthernet1/0/2 ALTE DISCARDING NONE
4 Ten-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 Ten-GigabitEthernet1/0/1 ROOT FORWARDING NONE
0 Ten-GigabitEthernet1/0/2 ALTE DISCARDING NONE
0 Ten-GigabitEthernet1/0/3 ALTE DISCARDING NONE
3 Ten-GigabitEthernet1/0/1 ROOT FORWARDING NONE
3 Ten-GigabitEthernet1/0/2 ALTE DISCARDING NONE
4 Ten-GigabitEthernet1/0/3 ROOT FORWARDING NONE
Based on the output, you can draw each MSTI mapped to each VLAN, as shown in Figure 22.
Figure 22 MSTIs mapped to different VLANs
A
B
A B
C D
C
B
C
MSTI 1 mapped to VLAN 10
A
D D
Root bridge Normal link Blocked link
MSTI 3 mapped to VLAN 30
MSTI 0 mapped to VLAN 20
MSTI 4 mapped to VLAN 40