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Troubleshooting - IP Duplicity

Latest reply: Sep 4, 2018 20:42:35 662 2 1 0 0

The DHCP Server is duplicating IP Addresses due the SW CORE has not enabled the function "DHCP Server database enable" 

This command save DHCP data to storage devices. This avoids data loss caused by device faults. The two files save address lease information and address conflict information respectively. Run the command "display DHCP server database" ti check storage device for saving DHCP data. The DHCP server cant rememer the IP's that already delivered, so when the new devices try to obtain IP, the server will deliver the Old Ip to the new devices.

Verify the IP Duplicity:

To confirm if the device has IP conflicts, run the cmd "display arp ip-conflict track".


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Created Sep 4, 2018 17:08:32

Very useful command, this may avoid lot of future problems for DHCP server.
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Created Sep 4, 2018 20:42:35

Really interesting, I had not idea about this, but this issue can occur just with SW, or also with ARs, Firewalls and AC? Regards!
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