Spanning-Tree Port-Priority - Cisco IE-3000-8TC Command Reference Manual
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spanning-tree port-priority
spanning-tree port-priority
Use the spanning-tree port-priority interface configuration command to configure an interface
priority. If a loop occurs, spanning tree can find the interface to put in the forwarding state. Use the no
form of this command to return to the default setting.
Syntax Description
vlan vlan-id
priority
Defaults
The default is 128.
Command Modes
Interface configuration
Command History
Release
12.2(44)EX
Usage Guidelines
If the variable vlan-id is omitted, the command applies to the spanning-tree instance associated with
VLAN 1.
You can set the priority on a VLAN that has no interfaces assigned to it. The setting takes effect when
you assign the interface to the VLAN.
If you configure an interface with both the spanning-tree vlan vlan-id port-priority priority command
and the spanning-tree port-priority priority command, the spanning-tree vlan vlan-id port-priority
priority command takes effect.
Examples
This example shows how to increase the likelihood that a port will be put in the forwarding state if a loop
occurs:
Switch(config)# interface gigabitethernet1/2
Switch(config-if)# spanning-tree vlan 20 port-priority 0
This example shows how to set the port-priority value on VLANs 20 to 25:
Switch(config-if)# spanning-tree vlan 20-25 port-priority 0
You can verify your settings by entering the show spanning-tree interface interface-id privileged
EXEC command.
Cisco IE 3000 Switch Command Reference
2-534
spanning-tree [vlan vlan-id] port-priority priority
no spanning-tree [vlan vlan-id] port-priority
(Optional) VLAN range associated with a spanning-tree instance. You can specify a
single VLAN identified by VLAN ID number, a range of VLANs separated by a
hyphen, or a series of VLANs separated by a comma. The range is 1 to 4094.
Number from 0 to 240, in increments of 16. Valid values are 0, 16, 32, 48, 64, 80,
96, 112, 128, 144, 160, 176, 192, 208, 224, and 240. All other values are rejected.
The lower the number, the higher the priority.
Modification
This command was introduced.
Chapter 2 IE 3000 Switch Cisco IOS Commands
OL-13019-01
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