Spanning-Tree Mst Cost - Cisco Catalyst 2950 Command Reference Manual

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Catalyst 2950 and 2955 Cisco IOS Commands

spanning-tree mst cost

Use the spanning-tree mst cost interface configuration command to set the path cost for multiple

spanning-tree (MST) calculations. If a loop occurs, spanning tree considers the path cost when selecting

an interface to put in the forwarding state. Use the no form of this command to return to the default

Syntax Description

The default path cost is computed from the interface bandwidth setting. These are the IEEE default path

cost values:

Command Modes

Interface configuration

Command History

Usage Guidelines

When you configure the cost, higher values represent higher costs.

This example shows how to set a path cost of 250 on an interface associated with instances 2 and 4:

Switch(config)# interface fastethernet0/4

Switch(config-if)# spanning-tree mst 2,4 cost 250

You can verify your settings by entering the show spanning-tree mst interface interface-id privileged

EXEC command.

spanning-tree mst instance-id cost cost

no spanning-tree mst instance-id cost

Range of spanning-tree instances. You can specify a single instance, a range of

instances separated by a hyphen, or a series of instances separated by a comma. The

range is 0 to 15.

Path cost is 1 to 200000000, with higher values meaning higher costs.

1000 Mbps—20000

100 Mbps—200000

10 Mbps—2000000

Modification

This command was introduced.

The value for the instance-id variable was changed.

This command was added to the standard software image (SI).

Catalyst 2950 and Catalyst 2955 Switch Command Reference

spanning-tree mst cost

Catalyst 2955