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Cisco ME 3400 Ethernet Access Switch Command Reference
OL-9640-10
Chapter 2 Cisco ME 3400 Ethernet Access Switch 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
Usage Guidelines Spanning Tree Protocol (STP) is not supported on user network interfaces (UNIs); it is only supported
on network node interfaces (NNIs) or on enhanced network interfaces (ENIs) on which STP has been
enabled. To set a port as an ENI or NNI, enter the port-type {eni | nni} interface configuration
command. To enable STP on an ENI, enter the spanning-tree interface configuration command.
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.
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 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(25)EX This command was introduced.
12.2(25)SEG The instance-id range changed to 0 to 4094.
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