Cisco Catalyst 3550 Command Reference Manual page 551

Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
This example shows how to set a path cos]t of 300 for VLANs 10, 12 to 15, and 20:
Switch(config-if)# spanning-tree vlan 10,12-15,20 cost 300
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 port-priority
spanning-tree vlan
OL-8566-01
Description
interface Displays spanning-tree information for the specified interface.
Configures an interface priority.
priority Sets the switch priority for the specified spanning-tree instance.
Catalyst 3550 Multilayer Switch Command Reference
spanning-tree cost
2-525