Allied Telesis AT-DC2552XS - Manual (Page 384)

Chapter 14: STP Commands
384 Section II: Layer 2 Switching
SPANNING-TREE PRIORITY (Port Priority)
Syntax
spanning-tree priority priority
Parameter
priority
Specifies the priority value for a port. The range is 0 to 240, in
increments of 16. Specify 0, 16, 32, 48, 64, 80, 96, 112, 128, 144,
160, 176, 192, 208, 224, or 240. The default value is 128.
Mode
Port Interface mode
Description
Use this command to set the priority value of a port. The port priority is
used as a tie breaker to decide the port role when two or more ports have
equal costs to the root bridge. A lower port priority value gives a port the
higher priority.
When MSTP is enabled, this command sets the value to the CIST
(instance 0).
To restore the default value, 128, use the NO SPANNING-TREE
PRIORITY command in the Port Interface mode.
Confirmation Command
“SHOW SPANNING-TREE” on page 344
Example
This example assigns ports 1.0.16 and 1.0.17 a port priority value of 112:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.16,port1.0.17
awplus(config-if)# spanning-tree priority 112