Allied Telesis AT-S81 - Manual (Page 199)

AT-S81 Management Software User’s Guide
Section II: Menus Interface 199
Dynamic MAC addresses are not stored indefinitely in the MAC address
table. The switch deletes a dynamic MAC address from the table if it does
not receive any frames from the node after a specified period of time. The
switch assumes that the node with that MAC address is no longer active
and that its MAC address can be purged from the table. This prevents the
MAC address table from becoming filled with addresses of nodes that are
no longer active.
The period of time that the switch waits before purging an inactive dynamic
MAC address is called the age-out time. The default value is 300 seconds
(5 minutes) and the range is 15 to 3000 seconds. For instructions on
changing the aging timer, refer to “Setting the Age-Out Time” on page 204.