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New Member

Duplicated IP address

                   Hello All,

I Have a problem on Cisco IPphone CP-6961 I got error message that "Duplicated IP address " and I can't access admin setting or network setting on the phone to know which ip address is assign to the phone I can't access anything only i got error message "Duplicated IP address"

Thanks for your support.

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re:Duplicated IP address

Hello, Mustafa!

You can try to make factory default on this phone.


Sent from Cisco Technical Support Android App

8 REPLIES

Duplicated IP address

Are you using Static or DHCP?

What is controlling your IP Phones, CUCM or CME?

Do a #sh CDP nei detail on the local switch and it should give you the IP address of the phone.

New Member

Duplicated IP address

I use DHCP and CME and #sh CDP nei didn't give me the IP

Duplicated IP address

Do you know the MAC address of the phone? It will be written on it or use the CAM table of the local switch.

Check the DHCP binding table to see what address the phone has using the MAC.

I am guessing you know which port the Cisco phone is plugged into? If so, CDP Neighbour Detail on that port should give you the IP address.

New Member

Duplicated IP address

Try "show cdp entry * protocol" to get the IP address of a CDP Neighbor.

Duplicated IP address

On the CME, try sh ip dhcp conflicts. If you see devices listed in the output, do clear ip dhcp conflicts *.

This should take care of your issue.

Please rate helpful answers!

New Member

Re:Duplicated IP address

Hello, Mustafa!

You can try to make factory default on this phone.


Sent from Cisco Technical Support Android App

VIP Purple

Re:Duplicated IP address

Hi,

you can try running Wireshark and then, enter ip.addr===x.x.x.x  and search for Duplicate IP address associated with mac-address.

regds,

aman

New Member

Duplicated IP address

Thanks all your help i reset phone to factory setting and it solved the problem

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