Setting the aging timer for dynamic ARP entries
About the aging timer for dynamic ARP entries
Each dynamic ARP entry in the ARP table has a limited lifetime, called an aging timer. The aging timer of a dynamic ARP entry is reset each time the dynamic ARP entry is updated. A dynamic ARP entry that is not updated before its aging timer expires is deleted from the ARP table.
Procedure
Enter system view.
system-view
Set the aging timer for dynamic ARP entries.
arp timer aging { aging-minutes | second aging-seconds }
The default setting is 20 minutes.