Installation manual

Command Manual - Network Protocol
Quidway S3000-EI Series Ethernet Switches Chapter 1 ARP Configuration Commands
Huawei Technologies Proprietary
1-7
z By sending gratuitous ARP packets, network devices can figure out whether the IP
addresses of other devices conflict with its own.
z If the device which sends the gratuitous ARP packet changed its hardware
address (probably, it turns off, has its interface card changed, and then reboots),
this packet can make old hardware address in the cache of other devices update
accordingly.
Related command: debugging arp packet.
Example
# Enable gratuitous ARP packet learning on the switch Quidway A.
<QuidwayA> system-view
System View: return to User View with Ctrl+Z.
[QuidwayA] gratuitous-arp-learning enable