arp entry: INCOMPLETE

[jemorton]

Any advice on an arp entry that has the word INCOMPLETE instead of the hosts MAC address?

What would cause this?

Any help would be greatly appreciated.

[prafuljaded]

Do you get the same even after clearing the ARP entries?

[jc.cisse]

Someone pinging an IP address on that subnet, while that device is not connected (or turn off) will cause that.

[robho]

This means that the switch attempted to ARP for the device and did not get a response. Most likely, the entry existed on the switch/router at one point and attempted to send a gratuitous ARP 60 seconds prior to aging it. No response, so is marked as incomplete.

[jemorton]

THANK YOU.