PLANET WGSW-52040 - Manual (Page 432)

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Chapter 27 Commands for
Gratuitous ARP Configuration
27.1 ip gratuitous-arp
Command:
ip gratuitous-arp [<interval-time>]
no ip gratuitous-arp
Function:
To enabled gratuitous ARP, and specify update interval for gratuitous ARP. The no form of this command will disable
the gratuitous ARP configuration.
Parameters:
> is the update interval for gratuitous ARP with its value limited between 5 and 1200 seconds and with
default value as 300 seconds.
Command Mode:
Global Configuration Mode and Interface Configuration Mode.
Default:
Gratuitous ARP is disabled by default.
Usage Guide:
When configuring gratuitous ARP in global configuration mode, all the Layer 3 interfaces in the switch will be enabled
to send gratuitous ARP request. If gratuitous ARP is configured in interface configuration mode, then only the
specified interface is able to send gratuitous ARP requests. When configuring the gratuitous ARP, the update interval
configuration from interface configuration mode has higher preference than that from the global configuration mode.
Example:
1) To enable gratuitous ARP in global configuration mode, and set the update interval to be 400 seconds.
Switch>enable
Switch#config
Switch(config)#ip gratuitous-arp 400
2) To enable gratuitous ARP for interface VLAN 10 and set the update interval to be 350 seconds.
Switch(config)#interface vlan 10
Switch(Config-if-Vlan10)#ip gratuitous-arp 350