Allied Telesis AT-S63 - Manual (Page 582)

Chapter 32: Internet Protocol Version 4 Packet Routing
582 Section VII: Internet Protocol Routing
SET IP ARP TIMEOUT
Syntax
set ip arp timeout= integer
Parameter
timeout Specifies the ARP cache timeout value The range is 1 to
260000 seconds. The default setting is 150 seconds.
Description
This command sets the ARP cache timeout value. The timer prevents the
ARP table from becoming full with inactive entries. An entry that is not
used for the length of the timeout period is designated as inactive and is
deleted from the table.
This command is not available on the AT-9408LC/SP, AT-9424T/GB, and
AT-9424T/SP switches.
Example
The following command sets the timer to 600 seconds:
set ip arp timeout=600