Spanning-Tree Mst Priority - Cisco Catalyst 3750 Command Reference Manual

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spanning-tree mst priority

Use the spanning-tree mst priority global configuration command on the switch stack or on a

standalone switch to set the switch priority for the specified spanning-tree instance. Use the no form of

this command to return to the default setting.

Syntax Description

The default is 32768.

Command Modes

Global configuration

Command History

This example shows how to set the spanning-tree priority to 8192 for multiple spanning-tree instances

(MST) 20 to 21:

Switch(config)# spanning-tree mst 20-21 priority 8192

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

Related Commands

show spanning-tree

spanning-tree mst cost

spanning-tree mst port-priority

Catalyst 3750 Switch Command Reference

spanning-tree mst instance-id priority priority

no spanning-tree mst instance-id priority

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.

Set the switch priority for the specified spanning-tree instance. This setting affects

the likelihood that the switch is selected as the root switch. A lower value increases

the probability that the switch is selected as the root switch.

The range is 0 to 61440 in increments of 4096. Valid priority values are 0, 4096,

8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152,

53248, 57344, and 61440. All other values are rejected.

Modification

This command was introduced.

mst instance-id

Chapter 2 Catalyst 3750 Switch Cisco IOS Commands

Displays MST information for the specified interface.

Sets the path cost for MST calculations.

Configures an interface priority.