Mysterious TCP/IP Issue
Posted on 2003-02-27
Randomly throughout the day, my Exchange server will be unreachable through the network. I started thinking it was an Exchange problem because we were getting multiple error messages in the logs. After fighting this for weeks I've narrowed it down to something that I think is TCP/IP related. The error messages were occuring because the server was cut off from everything else. When the server loses its connection I can restore it by either disabling and enabling the NIC or by unplugging the network cable for a few seconds. I thought it might be the NIC so I bought a new 3com card but still the same problem. Next I followed Microsofts directions and uninstalled all networking services, uninstalled TCP/IP, deleted all the registry keys, then reinstalled everything. No dice. There is no pattern to when it goes down, only the fact that it's in groups. It will go down 10 times in 30 minutes then be a-ok for 18 hours, then it will go down 4 times, then be up for 11 hours. I had an "expert" come in and look at it but he found nothing either. He thought it might be VPN or RRAS so I disabled both but that didn't help.
The server is a compaq dual p3 800 running 2ksp3. The only thing on it besides Exchange is Symantec Corporate AV 8.0. There were a few websites, but we moved them to another server when this started happening. Now the only available site is the OWA.
What gives? Does this machine need a complete rebuild of windows? Thanks for any help.