False Duplicate ip address error reported on our windows 2008 and windows 2012 servers

[salawu.kabiru]

we use windows 2008 and windows 2012 servers our company. my access switches are cisco catalyst 3560.

A sample of a show version command from one of our access switches is as shown below.
 

SW_01#show version
Cisco IOS Software, C3560E Software (C3560E-UNIVERSALK9-M), Version 15.0(1)SE2, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 22-Dec-11 00:16 by prod_rel_team

ROM: Bootstrap program is C3560E boot loader
BOOTLDR: C3560E Boot Loader (C3560X-HBOOT-M) Version 12.2(53r)SE2, RELEASE SOFTWARE (fc1)

SW_01 uptime is 2 weeks, 5 days, 16 hours, 15 minutes
System returned to ROM by power-on
System restarted at 17:31:47 UTC Fri Nov 14 2014
System image file is "flash:/c3560e-universalk9-mz.150-1.SE2/c3560e-universalk9-mz.150-1.SE2.bin"

I will be grateful if any one can help with some solution.

Thank you

[Aaron Harrison]

Hi 

What makes you think it is a false error?

Aaron

[salawu.kabiru]

i connected only one windows 2008 server to the cisco switch and i still had the same error message.

[Aaron Harrison]

Can you post your switch config?

How many switches do you have? Presumably you have more than one, this  one is connected to others, and those others have servers and clients?

Try doing a 'show arp' on the switch and comparing the IPs and MACs to your windows server. Do it a few times as it may change as each device using the IP sends packets.