H3C Technologies H3C S12500 Series Switches - Manual (Page 117)

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# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
VLAN Port Role STP State Protection
20 GigabitEthernet3/0/1 ALTE FORWARDING NONE
20 GigabitEthernet3/0/2 ROOT DISCARDING NONE
20 GigabitEthernet3/0/3 ALTE DISCARDING NONE
30 GigabitEthernet3/0/1 ROOT FORWARDING NONE
30 GigabitEthernet3/0/2 ALTE DISCARDING NONE
40 GigabitEthernet3/0/3 ROOT FORWARDING NONE
Based on the output, you can draw the spanning tree mapped to each VLAN, as shown in Figure
32 .
Figure 32 Spanning trees mapped to different VLANs