H3C S7500E-X Configuration Manual page 115

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
[DeviceA] display stp brief
MST ID
0
0
0
1
1
3
3
# Display brief spanning tree information on Device B.
[DeviceB] display stp brief
MST ID
0
0
0
1
1
3
3
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
MST ID
0
0
0
1
1
4
# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
MST ID
0
0
0
3
3
4
Based on the output, you can draw each MSTI mapped to each VLAN, as shown in
Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
GigabitEthernet1/0/1
GigabitEthernet1/0/3
GigabitEthernet1/0/2
GigabitEthernet1/0/3
Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
GigabitEthernet1/0/2
GigabitEthernet1/0/3
GigabitEthernet1/0/1
GigabitEthernet1/0/3
Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
Role STP State
ALTE DISCARDING
DESI FORWARDING
ROOT FORWARDING
DESI FORWARDING
DESI FORWARDING
DESI FORWARDING
ROOT FORWARDING
Role STP State
DESI FORWARDING
DESI FORWARDING
DESI FORWARDING
DESI FORWARDING
ROOT FORWARDING
DESI FORWARDING
DESI FORWARDING
Role STP State
DESI FORWARDING
ROOT FORWARDING
DESI FORWARDING
ROOT FORWARDING
ALTE DISCARDING
DESI FORWARDING
Role STP State
ROOT FORWARDING
ALTE DISCARDING
ALTE DISCARDING
ROOT FORWARDING
ALTE DISCARDING
ROOT FORWARDING
102
Protection
NONE
NONE
NONE
NONE
NONE
NONE
NONE
Protection
NONE
NONE
NONE
NONE
NONE
NONE
NONE
Protection
NONE
NONE
NONE
NONE
NONE
NONE
Protection
NONE
NONE
NONE
NONE
NONE
NONE
Figure 30.