ip gratuitous-arp

Use this command to override the normal ARP updating process, that occurs by default.

Syntax

ip gratuitous-arp {ignore | reply | request}
no ip gratuitous-arp

Parameters

ignore Ignore all gratuitous ARP frames, no updates will occur. This option will also prevent any new learning from gratuitous ARPs, if the command ip gratuitous-arp-learning was used. (See ip gratuitous-arp-learning for command details).
reply Update from gratuitous ARP replies only.
request Update from gratuitous ARP requests only.

Defaults

ARPs are updated from Gratuitous ARP requests and replies.

Mode

Configuration command, Interface configuration command mode.

Example

This example shows how to enable ARP updating from gratuitous ARP requests on VLAN 1:

System(rw-config)->interface vlan 1
System(rw-config-intf-vlan.0.1)->ip gratuitous-arp request