Allied Telesis AT-S25 - Manual (Page 260)

Section III: Web Browser Management
260
Changing the Aging Time
The switch uses the aging time to delete inactive dynamic MAC
addresses from the MAC Menu. 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nodes that are no longer active.
To adjust the aging time, perform the following procedure:
1. From the Home page, select Configuration.
The Configuration window is displayed with the System menu
option selected by default.
2. If the System menu option is not selected, select it and then select the
General tab.
The General window in Figure 111 is displayed.
Figure 111 Configuration - General Window