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Windows Server Forum / Small Business Server / SBS 2000 / August 2004...link and traffic lights on switch and router flash heavily...
I know my problem may be network related and not for this newsgroup but I'm stumped and wonder if anyone else has had this experience. Problem: After about 2-3 hours sometimes longer, All link and traffic lights on switch and router flash heavily and the internet can't be accessed. The gateway or server IP's can't be pinged externally when it is down. The only way found so far to clear the problem is to reboot the server. Test with traffic monitor hooked to switch port shows an increase from >1% running normal to 13% peak when the problem occurs. With out going into detail I've taken other steps in trouble shooting and believe it's down to the Server, Router or Switch but only a server reboot clears this. Dell Server: SBS2000, dual NIC. (ADSL Router is on external, Switch is on internal NIC.) Server is patched. No virus detected. Dell/Intel NIC drivers updated. Dell firmware updated. Thanks db Hi Doug, This can be caused by a faulty network cable anywhere on the network.  SignatureRegards, Marina Microsoft SBS-MVP > I know my problem may be network related and not for this newsgroup but I'm > stumped and wonder if anyone else has had this experience. [quoted text clipped - 28 lines] > > db That was one of my 1st thoughts or a worm. db > Hi Doug, > [quoted text clipped - 34 lines] > > > > db Unless the switch is bad, I would be scanning those workstations for a Trojan/worm. Dirk-Thomas >I know my problem may be network related and not for this newsgroup but I'm > stumped and wonder if anyone else has had this experience. [quoted text clipped - 28 lines] > > db To elaborate, Spybot Search and Destroy, Ad-aware and www.moosoft.com The Cleaner with the latest definitions for all can help you dig out infected machines. When I suspect problems I use all three and sometimes some other stuff. What brand of switch? Some of the better managed switches let you look at packet traffic in real time or history. Ports that have an unsual lot of traffic besides the server might indicate a problem device. >Unless the switch is bad, I would be scanning those workstations for a >Trojan/worm. [quoted text clipped - 33 lines] >> >> db Jim B. SBS MVP remove the mvp to send email I did have one box that was full of crap that I'd cleaned up. Dell Switch, unmanaged. All ports flash the same when the trouble occurs. nothing to indicate a particular line. db > To elaborate, Spybot Search and Destroy, Ad-aware and www.moosoft.com > The Cleaner with the latest definitions for all can help you dig out [quoted text clipped - 46 lines] > Jim B. SBS MVP > remove the mvp to send email Does NETSTAT show anything unusual when run on the server when this is happening? Jeff >I know my problem may be network related and not for this newsgroup but I'm > stumped and wonder if anyone else has had this experience. [quoted text clipped - 28 lines] > > db I'll check that. I thought I had found it but apparently not. Thought it could be the result of one of the windows updates since it began around the same time. Thanks for all the ideas so far. db > Does NETSTAT show anything unusual when run on the server when this is > happening? [quoted text clipped - 34 lines] > > > > db Thanks for the ideas and suggestions. I think I've resolved this issue. Here is what I found. Because I never installed SQL on this box the patch for w32.slammer wasn't installed. It appears that another application may have installed MSDE 2000 which it turns out needs to be patched. I ran across this when looking at the system processes and noticed that sqlservr.exe was running and using 40% of the CPU while no users were connected to the network. I rebooted, installed the patches (MS02-061) and so far the system is stable. Thanks, db Thanks for the ideas and suggestions. I think I've resolved this issue. Here is what I found. Because I never installed SQL on this box the patch for w32.slammer wasn't installed. It appears that another application may have installed MSDE 2000 which it turns out needs to be patched. I ran across this when looking at the system processes and noticed that sqlservr.exe was running and using 40% of the CPU while no users were connected to the network. I rebooted, installed the patches (MS02-061) and so far the system is stable. Thanks, db |
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