HP 3600 v2 Series Configuration Manual page 24

You can use this command to enable the device to display error message without sending any gratuitous
ARP request for conflict confirmation. The receiving device displays the message every 30 seconds until
the conflict is resolved.
To enable IP conflict notification:
Step
1. Enter system view.
2. Enable IP conflict notification.
Command
system-view
arp ip-conflict prompt
13
Remarks
N/A
Optional.
Disabled by default.