Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 357)

Switching Introduction
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 14.15
When a MAC address is thrashing between two ports, one of these ports (the first to cross
its thrashing threshold) is disabled. All other ports on the device will then have their
threshold counters reset.
To set a thrash action for a port, use the thrash-limiting command on page 15.49 :
To view the thrash action that is set for a port, use the show interface switchport
command on page 15.29 :
Re-enabling a port When a port is disabled, either completely or for a specific VLAN, it remains disabled until
it is manually re-enabled in any of the following ways:
■ by using SNMP
■ by rebooting the switch or stack
■ by specifying a thrash timeout value along with the thrash action
■ via the CLI