Re: DHCP Strangest Problem I ever Seen in my life
From: J.C. Hornbeck [MSFT] (jchornbe_at_online.microsoft.com)
Date: 03/25/04
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Date: Thu, 25 Mar 2004 12:47:11 -0600
What you describe is classic behavior of spanning tree being enabled on the
switches. Every last time I've seen this behavior it was a switch issue,
either because someone enabled spanning tree, DTP, PAgP, had outdated
firmware, etc. In fact you've kind of already proven that it's a switch
issue, we just don't know what exactly. Here are some articles that talk
about some of these same types of issues:
202840 - A Client Connected to an Ethernet Switch May Receive Several
Logon-Related Error Messages During Startup
(http://support.microsoft.com/?id=202840).
168455 - DHCP Renewal Failures on Switched Networks
(http://support.microsoft.com/?id=168455).
-- J.C. Hornbeck, MCSE Microsoft Product Support NOTE: Please reply to the newsgroup and not directly to me. This allows others to add to and benefit from these threads and also helps to ensure a more timely response. Thank you! This posting is provided "AS IS" without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability or fitness for a particular purpose. "Emiliano G. Estevez" <eestevez@sistran.com.ar> wrote in message news:e$L8G6oEEHA.1600@tk2msftngp13.phx.gbl... > Hi, > > > > I have three domain controllers two are in a site and the other is in > another site, on the three domain controllers I have setup DHCP, wins and > DNS, they all have the latest hot fixes, services packs, and the three DHCP > servers are authorized in AD, the problem I have is that suddenly the > computers in my network that have to renew his IP address don't get one, and > the worst thing is that when the computer is restarted with the patch cord > plugged the system gets a lot of time to logon and once the system is on > line and we check for the IP address the IP address is 0.0.0.0 this is weird > because the system in the case that a DHCP server is not found and can > contact the default gateway will renew his IP address and if the default > gateway is no found the system will get an APIPA well that doesn't work, if > we set the IP address of the workstation to a fixed IP address the problem > is gone, but this is no viable because I have almost 300 workstations, other > weird thing is that if I unplugged the patch cord the computers boots up > normally, I logon to the workstation with cached credentials and then I > plugged the patch cord, go to the cmd and type ipconfig /renew and I get an > IP address. > > I put a sniffer on my switchs and the network cards when they are set for > DHCP when they are restarting doesn't send any dhcpinform packets in fact > the doesn't send any packets at all, If I disable the dhcp service on my DC > and setup my catalyst 3550 as a dhcp server the problem is exactly the same > so I figured out that the dhcp service from MS is not involved but maybe I > am missing something, I am very frustrated about this and there is a week > now that I can't solve this problem, please I need a hand on this. > > > > Best Regards. > >
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