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IP configuration issue

Posted on 2014-02-14
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Last Modified: 2014-02-16
All of sudden I start getting Duplicate address on my LAB environment.
When I check the configuration I found what is shown in the screenshot.
Any help will be very much appreciated.

Thanks

Duplicate IP
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Question by:jskfan
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by:ffleisma
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are you using DHCP on your environment?

169 range is auto assigned by MS if it cannot attain IP address via DHCP.

As I can see on this PC, the DHCP is not enabled.

If you are using static IP address, you might have an IP address duplication.
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by:John Hurst
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Is someone on your network configured with a Static Address that is conflicting. I have seen that happen.

In my case, a workstation was reporting a duplicate IP and the user reported it, so it was easy to determine the problem area.

Run TCP/IP reset to see if that changes anything.

To manually reset:  Open cmd.exe with Run as Administrator:  netsh int ip reset c:\resetlog.txt

Also, for DNS, ipconfig /flushdns, then net stop dnscache followed by net start dnscache
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by:Dave Baldwin
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The image shows that DHCP is off so that would be a static IP address.
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by:ffleisma
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Try changing your static IP configuration to an available IP or enable dhcp if you have dhcp on your environment
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by:acbxyz
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To find the other host you can disconnect the machine with the screenshot and use another machine in the same subnet to ping the ip.
If it still answers, use (win)arp -a / (lin) sudo arp -n to get the mac-address.
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vijaydawda earned 84 total points
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It is an IP address conflict. Just disbale the interface and try to ping to 172.16.27.145. You'll get ping response from another host. To check the host name do ping -a 172.16.27.145.
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by:jskfan
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Thank you Guys, there was a Duplicate IP address..
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by:John Hurst
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@jskfan - Thanks for the update and I was happy to help.
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