Allied Telesis AT-8100 Series - Manual (Page 377)

AT-8100 Switch Command Line User’s Guide
377
The period of time the switch waits before purging inactive dynamic MAC
addresses is called the aging time. This value is adjustable on the switch.
The default value is 300 seconds (5 minutes).
You can also enter addresses manually into the table. These addresses
are referred to as static addresses. Static MAC addresses remain in the
table indefinitely and are never deleted, even when the network devices
are inactive. Static MAC addresses are useful for addresses that the
switch might not learn through its normal learning process or for addresses
that you want the switch to retain, even when the end nodes are inactive.