H3C Technologies H3C S5560 Series Switches - Manual (Page 144)

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# Enable the spanning tree feature globally and in VLAN 10, VLAN 20, and VLAN 40.
[DeviceC] stp global enable
[DeviceC] stp vlan 10 20 40 enable
5. Configure Device D:
# Set the spanning tree mode to PVST.
<DeviceD> system-view
[DeviceD] stp mode pvst
# Enable the spanning tree feature globally and in VLAN 20, VLAN 30, and VLAN 40.
[DeviceD] stp global enable
[DeviceD] stp vlan 20 30 40 enable
Verifying the configuration
When the network is stable, 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
VLAN ID Port Role STP State Protection
10 GigabitEthernet1/0/1 DESI FORWARDING NONE
10 GigabitEthernet1/0/3 DESI FORWARDING NONE
20 GigabitEthernet1/0/1 DESI FORWARDING NONE
20 GigabitEthernet1/0/2 DESI FORWARDING NONE
20 GigabitEthernet1/0/3 DESI FORWARDING NONE
30 GigabitEthernet1/0/2 DESI FORWARDING NONE
30 GigabitEthernet1/0/3 ROOT FORWARDING NONE
# Display brief spanning tree information on Device B.
[DeviceB] display stp brief
VLAN ID Port Role STP State Protection
10 GigabitEthernet1/0/2 DESI FORWARDING NONE
10 GigabitEthernet1/0/3 ROOT FORWARDING NONE
20 GigabitEthernet1/0/1 DESI FORWARDING NONE
20 GigabitEthernet1/0/2 DESI FORWARDING NONE
20 GigabitEthernet1/0/3 ROOT FORWARDING NONE
30 GigabitEthernet1/0/1 DESI FORWARDING NONE
30 GigabitEthernet1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
VLAN ID Port Role STP State Protection
10 GigabitEthernet1/0/1 ROOT FORWARDING NONE
10 GigabitEthernet1/0/2 ALTE DISCARDING NONE
20 GigabitEthernet1/0/1 ROOT FORWARDING NONE
20 GigabitEthernet1/0/2 ALTE DISCARDING NONE
20 GigabitEthernet1/0/3 DESI FORWARDING NONE
40 GigabitEthernet1/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
VLAN ID Port Role STP State Protection