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.

To set the aging timer for dynamic ARP entries:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Set the aging timer for dynamic ARP entries.

arp timer aging aging-time

The default setting is 20 minutes.