Allied Telesis AT-S100 - Manual (Page 94)

Chapter 3: Privileged Executive Mode Commands
94 Section I: Command Modes
SHOW MAC ADDRESS-TABLE AGEING-TIME
Syntax
show mac address-table ageing-time
Parameters
none
Description
Use the SHOW MAC ADDRESS-TABLE AGEING-TIME command to
display the aging time of MAC addresses assigned to the switch. By
default, this value is set to 300 seconds (5 minutes).
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. Deleting aged-out MAC addresses prevents the table from
becoming full of addresses of inactive nodes.
When the aging timer is set to 0, it disables the timer. No dynamic MAC
addresses are aged out and the table stops learning new addresses after
reaching its maximum capacity.
For procedures to configure and display the MAC addresses, see
“Displaying and Setting MAC Addresses” on page 32.
Command Mode
Privileged Executive mode
Example
The following command displays the MAC address aging-time:
switch#show mac address-table ageing-time
See Figure 4 for an example display.
Figure 4. SHOW MAC ADDRESS-TABLE AGING-TIME
(switch3)# show mac address-table aging-time
Aging-time 300
(switch3)#