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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
spanning-tree mst priority
spanning-tree mst priority
Use the spanning-tree mst priority global configuration command 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 (MST)
instance 20:
Switch(config)# spanning-tree mst 20 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 15.
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 (0, 4096, 8192, 12288, 16384, 20480,
24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 61440). All
other values are rejected.
Release Modification
12.1(9)EA1 This command was introduced.
12.1(13)EA1 The value for the instance-id variable was changed.
12.1(20)EA2 This command was added to the standard software image (SI).
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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