Allied Telesis AT-S39 - Manual (Page 228)

Section III: Web Browser Management
228
Changing the Aging Time
The switch uses the aging time 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nodes that are no longer active.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 default setting for the aging time is 300 seconds (5 minutes).
To adjust the aging time, perform the following procedure:
1. From the Home page, select Configuration.
2. From the Configuration page, select System.
3. From the System page, select the General tab.
The General tab in Figure 54 on page 178 is displayed.
4. Enter a new value in seconds in the MAC Aging Time field of the
window.
The value should be an increment of 5 seconds, for example 410,
415, or 420. A value that is not an increment of 5 is rounded down
to the next increment of 5. For example, the value 524 is rounded
down to 520.
5. Click Apply.