arp timer aging

Use arp timer aging to set the aging timer for dynamic ARP entries.

Use undo arp timer aging to restore the default.

Syntax

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

undo arp timer aging

Default

The aging timer for dynamic ARP entries is 20 minutes.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

aging-minutes: Specifies the aging timer in minutes. The value range for this argument is 1 to 1440.

second aging-seconds: Specifies the aging timer in seconds. The value range for the aging-seconds argument is 60 to 86400.

Usage guidelines

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. Dynamic ARP entries that are not updated before their aging timers expire are deleted from the ARP table.

Set the aging timer for dynamic ARP entries as needed. For example, when you configure proxy ARP, set a short aging time so that invalid dynamic ARP entries can be deleted in a timely manner.

Examples

# Set the aging timer for dynamic ARP entries to 10 minutes.

<Sysname> system-view
[Sysname] arp timer aging 10

# Set the aging timer for dynamic ARP entries to 200 seconds.

<Sysname> system-view
[Sysname] arp timer aging second 200

Related commands

display arp timer aging