Enabling periodic sending of gratuitous ARP packets for IPv4 VRRP
About periodic sending of gratuitous ARP packets for IPv4 VRRP
This feature enables the master router in a VRRP group to periodically send gratuitous ARP packets. Then the downstream devices can update the MAC address entry for the virtual MAC address of the VRRP group in a timely manner.
Restrictions and guidelines
This feature takes effect only in VRRP standard mode.
If you change the sending interval for gratuitous ARP packets, the configuration takes effect at the next sending interval.
The master sends the first gratuitous ARP packet at a random time in the second half of the set interval after you execute the vrrp send-gratuitous-arp command. This prevents too many gratuitous ARP packets from being sent at the same time.
The sending interval for gratuitous ARP packets might be much longer than the set interval when the following conditions are met:
Multiple VRRP groups exist on the device.
A short sending interval is set.
Procedure
Enter system view.
system-view
Enable periodic sending of gratuitous ARP packets for IPv4 VRRP.
vrrp send-gratuitous-arp [ interval interval ]
By default, periodic sending of gratuitous ARP packets is disabled for IPv4 VRRP.