Setting 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.

1. Enter system view.

   system-view

2. Set the aging timer for dynamic ARP entries.

   arp timer aging { aging-minutes | second aging-seconds }

   The default setting is 20 minutes.