Spanning Tree Commands
©2008 Allied Telesis Inc. All rights reserved.
19.36
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
Software Version 5.2.1
spanning-tree mst instance priority
Use this command to set the port priority for an MST instance (MSTI).
This sets the value of the priority field contained in the port identifier. The MST algorithm uses
the port priority when determining the root port for the switch in the MSTI. The port with the
lowest value is considered to have the highest priority and will be chosen as root port over a
port - equivalent in all other aspects - but with a higher priority value.
Use the
no
parameter with this command to restore the default priority value.
Syntax
spanning-tree mst instance
<instance-id>
priority <
priority
>
no spanning-tree mst instance priority
<instance-id>
Mode
Interface mode
Default
The default value is 128.
Examples
Related Commands
spanning-tree priority (port priority)
Parameter
Description
<instance-id>
Specify the identifier.
<
priority
>
This must be a multiple of 16 and within the range 0 to 240.
A lower priority indicates greater likelihood of the port becoming the root
port.
awplus#
configure terminal
awplus(config)#
interface port1.2.3
awplus(config-if)#
spanning-tree mst instance 3 priority 121