Consolidated Platform Configuration Guide, Cisco Ios Release 15.2(4)E (Catalyst 2960-X Switches - Cisco Catalyst 2960 series Configuration Manual

How to Configure Spanning-Tree Features
SUMMARY STEPS
1. enable
2. configure terminal
3. interface interface-id
4. spanning-tree cost cost
5. spanning-tree vlan vlan-id cost cost
6. end
DETAILED STEPS
Command or Action
Step 1 enable
Example:
Switch> enable
Step 2 configure terminal
Example:
Switch# configure terminal
Step 3 interface interface-id
Example:
Switch(config)# interface
gigabitethernet1/0/1
Step 4
spanning-tree cost cost
Example:
Switch(config-if)# spanning-tree
cost 250
Step 5 spanning-tree vlan vlan-id cost cost
Example:
Switch(config-if)# spanning-tree
vlan 10,12-15,20 cost 300

Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)

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Purpose
Enables privileged EXEC mode. Enter your password if prompted.
Enters the global configuration mode.
Specifies an interface to configure, and enters interface configuration mode.
Valid interfaces include physical ports and port-channel logical interfaces
(port-channel port-channel-number).
Configures the cost for an interface.
If a loop occurs, spanning tree uses the path cost when selecting an interface
to place into the forwarding state. A lower path cost represents higher-speed
transmission.
For cost, the range is 1 to 200000000; the default value is derived from the
media speed of the interface.
Configures the cost for a VLAN.
If a loop occurs, spanning tree uses the path cost when selecting an interface
to place into the forwarding state. A lower path cost represents higher-speed
transmission.
• For vlan-id, you can specify a single VLAN identified by VLAN ID
number, a range of VLANs separated by a hyphen, or a series of
VLANs separated by a comma. The range is 1 to 4094.
• For cost, the range is 1 to 200000000; the default value is derived
from the media speed of the interface.