Cisco Catalyst 3550 Command Reference Manual page 463

Chapter 2 Cisco IOS Commands
Related Commands Command
show spanning-tree
interface-id
spanning-tree cost
spanning-tree vlan
78-11195-09
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.
Catalyst 3550 Multilayer Switch Command Reference
spanning-tree port-priority
2-437