Configuring gratuitous ARP
Follow these steps to configure gratuitous ARP:
To do… | Use the command… | Remarks |
|---|---|---|
Enter system view | system-view | — |
Enable learning of gratuitous ARP packets | gratuitous-arp-learning enable | Optional Enabled by default. |
Enable the switch to send gratuitous ARP packets upon receiving ARP requests from another subnet | gratuitous-arp-sending enable | Required By default, the switch does not send gratuitous ARP packets upon receiving ARP requests from another subnet. |
Enter interface view | interface interface-type interface-number | — |
Enable periodic sending of gratuitous ARP packets and set the sending interval | arp send-gratuitous-arp [ interval milliseconds ] | Required Disabled by default. |
![[NOTE: ]](images/note.png) | NOTE: You can enable periodic sending of gratuitous ARP packets on a maximum of 1024 interfaces. Periodic sending of gratuitous ARP packets takes effect only when the link of the enabled interface goes up and an IP address has been assigned to the interface. If you change the interval for sending gratuitous ARP packets, the configuration is effective at the next sending interval. The frequency of sending gratuitous ARP packets may be much lower than is expected if this function is enabled on multiple interfaces, if each interface is configured with multiple secondary IP addresses, or if a small sending interval is configured in such cases. | |