Spanning-tree mst priority – Dell POWEREDGE M1000E User Manual

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Cisco Catalyst Blade Switch 3120 for HP Command Reference

OL-12248-03

Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands

spanning-tree mst priority

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.

spanning-tree mst instance-id priority priority

no spanning-tree mst instance-id priority

Syntax Description

Defaults

The default is 32768.

Command Modes

Global configuration

Command History

Examples

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
command.

Related Commands

instance-id

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 4094.

priority priority 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.

Release

Modification

12.2(40)EX1

This command was introduced.

Command

Description

show spanning-tree

mst instance-id

Displays MST information for the specified interface.

spanning-tree mst cost

Sets the path cost for MST calculations.

spanning-tree mst port-priority

Configures an interface priority.

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