DHCP IP Conflict issues with Windows 2003 DHCP server so article 928233 does not apply
Hi,We seem to be having a problem withlaptopsrunning Windows Vista SP2 in that they are cyclingDHCP requests. What is happeningis when wewatch the traffic using wiresharkyou can see it go through the normalDHCP sequence and then decline the address, the laptop then shows an IP AddressConflict although one does not exist. It appears thatthe gratuitousARP sent at the end is being processed a and the machine is conflicting with its self I have tried the followinghttp://support.microsoft.com/kb/928233but this does not seem to have made any difference. It is only happening with laptops not desktops (could be that they have twoNICs) and it continues to error until the DHCP runs out ofaddresses with them allmarked bad.I have tried the above, adding ArpRetryCount to the reg with a 0 setting, using netsh to reset theIP stack anddownloading and installing the latest drivers none of this seems to make any difference.Any ideasgreatly appreciated asI ran out about a day ago.Regards,Paul
February 18th, 2009 6:31pm

Hi Paul, Thank you for your post. Firstly, may I know the following: 1. How do you connect to the network, wirelessly or via wired connection? 2. Is the DHCP server a Windows based server? Since there are two NICs in the laptop, please disable the one which is not in use and check the issue. If the issue persists, please help gathering the following information for further research: 1. Run ipconfig/all when the issue occurs and post the report to the thread. 2. Capture the network packet ==================== 1) Download NetMon3.2 from the following website and install it on the computer http://www.microsoft.com/downloads/details.aspx?FamilyID=f4db40af-1e08-4a21-a26b-ec2f4dc4190d&DisplayLang=en 2) Log onto the machines, right-click the Netmon icon and select Run as Administrator to launch NetMon3.2. 3) In the Microsoft Network Monitor 3.2 window, click Create a new capture tab 4) In the new tab, select all the Network Adapters in the Select Networks window. 5) After that, press F10 to start NetMon. 6) Try to re-produce the problem. 7) Go back to the NetMon window and press F11 to stop the NetMon. 3. Check both DHCP server/clients event log to see if there are any related errors. Please use Windows Live SkyDrive (http://www.skydrive.live.com/) to upload the files and share their URL with me. Thank you for your efforts. Nicholas Li - MSFT
Free Windows Admin Tool Kit Click here and download it now
February 20th, 2009 2:07pm

This topic is archived. No further replies will be accepted.

Other recent topics Other recent topics