Spanning-Tree Port-Priority - Cisco 4500M Command Reference Manual

spanning-tree port-priority

spanning-tree port-priority
To prioritize an interface when two bridges compete for position as the root bridge, use the
spanning-tree port-priority command. The priority you set breaks the tie. To revert to the default
setting, use the no form of this command.
Syntax Description
port_priority
Defaults
Port priority value is set to 128.
Command Modes
Interface configuration
Command History Release
12.1(8a)EW
Examples
This example shows how to increase the possibility t hat the spanning tree instance 20 will be chosen as
the root-bridge on interface FastEthernet 2/1:
Switch(config-if)# spanning-tree port-priority 0
Switch(config-if)#
Related Commands
spanning-tree cost
spanning-tree portfast default
spanning-tree portfast (interface configuration mode)
spanning-tree uplinkfast
spanning-tree vlan
show spanning-tree
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
2-446
spanning-tree port-priority port_priority
no spanning-tree port-priority
Port priority; valid values are from 0 to 240 in increments of 16.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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