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7.6

Random network crashes in domain...

Asked by LR_Brian in TCP/IP, Windows 2003 Server, User Datagram Protocol (UDP), WINS, Networking Protocols

Tags: Networking, TCP/IP, UDP, Windows Server 2003

Hello,
We have recently began to experience a severe issue within our network.  The issue happens very randomly (it could be as infrequent as once every 2 or 3 weeks, or it could be 2 weeks consecutively).  The issue is that ALL network functionality on ALL machines (servers, workstations, IP phones, etc...) completely ceases for 5 - 7 minutes before the problem clears itself and network connectivity is restored.  Please note, I can ping the loopback address, but no other addresses (DNS or the Default Gatway).  I have done this on multiple machines to verify.  Previously I noted that there were MRxSmb 8003 errors appearing on a secondary DC coming from our PDC so I disabled the Computer Browser service on all DC's and member servers (note that I did not modify the registries of any server).  Unfortunately, there is nothing in the Event Viewer on any machine for the most recent issue that occured (7:30pm MST), except for a WINS error that it was unable to replicate during the issue.

There are 2 DC's and 8 Member Servers as well as 70 W2K clients and 70 XP Pro boxes.  We are using a DLINK DFL 800 NetDefend firewall/VPN appliance.

This problem is driving me absolutely bonkers!  Any help or suggestions would be greatly appreciated.  Please let me know if you need any additional inforamtion.
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[+][-]09/21/09 03:27 PM, ID: 25388252Accepted Solution

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About this solution

Zones: TCP/IP, Windows 2003 Server, User Datagram Protocol (UDP), WINS, Networking Protocols
Tags: Networking, TCP/IP, UDP, Windows Server 2003
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Solution Provided By: ChiefIT
Participating Experts: 4
Solution Grade: A
 
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