Cisco catalyst 3750 Command Reference Manual page 824

spanning-tree port-priority
Switch(config-if)# spanning-tree vlan 20 port-priority 0
This example shows how to set the port-priority value on VLANs 20 to 25:
Switch(config-if)# spanning-tree vlan 20-25 port-priority 0
You can verify your settings by entering the show spanning-tree interface interface-id privileged
EXEC command.
Related Commands Command
show spanning-tree
interface-id
spanning-tree cost
spanning-tree vlan
Catalyst 3750 Switch Command Reference
2-794
Description
interface Displays spanning-tree information for the specified interface.
Sets the path cost for spanning-tree calculations.
priority Sets the switch priority for the specified spanning-tree instance.
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
OL-8552-07