Allied Telesis AT-S62 - Manual (Page 182)

Chapter 9: MAC Address Table Commands
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SET SWITCH AGINGTIMER|AGEINGTIMER
Syntax
set switch agingtimer|ageingtimer=value
Parameter
agingtimer Specifies the aging timer for the MAC address table.
ageingtimer The value is in seconds. The range is 0 to 1048575
seconds. The default is 300 seconds (5 minutes).
Entering the value 0 (zero) disables the aging timer.
The parameters are equivalent.
Description
The switch uses the aging timer to delete inactive dynamic MAC
addresses from the MAC address table. When the switch detects that no
packets have been sent to or received from a particular MAC address in
the table after the period specified by the aging time, the switch deletes
the address. This prevents the table from becoming full of addresses of
nodes that are no longer active.
The value 0 (zero) disables the aging timer. When disabled, no dynamic
addresses are deleted from the table, even addresses that belong to
inactive nodes.
Example
The following command sets the aging timer to 120 seconds (2 minutes):
set switch agingtimer=120