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Network card issues

This issue is with a Windows 2003 DELL Server. The network once a while stop respoding the requests and it goes up again as soon as I disable and enable the network connection. We have network of 8 servers and these are colocated. During the time I am unable to ping the server from outside, the server respond to the ping request from any other server in the colocated area. I can't really understand if it is due to OS, Network card, or Switch. Any help is greatly appreciated.

Thanks,
Nauman.
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nauman_ahmed
Asked:
nauman_ahmed
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2 Solutions
 
NJComputerNetworksCommented:
I had a problem similar to this...  Because there were no errors in Device Manager, I didn't think I had a hardware problem.  In my case, the issue was the Network Cable.  I was able to switch the card to 10/full instead of 100/full and the problem went away.  So, I later changed the network cable and put the server back to 100/full.  

Another clue was that when I had the card at 100/full (and a bad network cable), my network card send/receive stats would show little activity to no activity...
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nauman_ahmedAuthor Commented:
Thanks for the reply. I tried changing the speed from Auto to 100/Full. My switches are configured for 100/full only and the problem didn solve. Any idea why was able to ping the server from the colocation network but not from any other computer? I tried that from two different sites and I didnt recieve any response from ping until I disabled and eabled the network again.

-Nauman.
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NJComputerNetworksCommented:
I'm not sure...  Sounds strange...  I assume you are pinging by IP address and not name...  because they are on different subnets, you may want to try a tracert ping..

tracert xx.xx.xx.xx

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nauman_ahmedAuthor Commented:
Thanks for the reply. Yesterday I got the hardware replaced and even the DELL support was not able to determine the exact real issue. I have also changed the network cable and monitoring the server now.

-Nauman.
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NJComputerNetworksCommented:
This is a good action to take...  and cheap.  hopefully this will resolve the problem.
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nauman_ahmedAuthor Commented:
It did not solve the issues. I have changed the network cable, connect the server to a different port but still the issue remains. Can it be because of Windows?

-Nauman.
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ClickCentricCommented:
Are you using a layer 2 switch or router between the servers by chance?  This sounds almost like a fractioning issue.  Try another port on the switch/router.  Do you have any virtual networks set up between the servers?
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nauman_ahmedAuthor Commented:
We are using DELL PowerConnect and none of the other server has this issue. I have tried changing the port but it doesnt solve the problem. There are no virtual networks on the server. The only option remains is try re-installing the OS :$

-Nauman.
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ClickCentricCommented:
Which dell PowerConnect switch are you using? (Dell calls all of their switches PowerConnect)  If it's a managed switch, I'd try resetting the switch before reinstalling the OS...
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nauman_ahmedAuthor Commented:
Its a managed switch and I have restarted the switch too. I have reinstalled Windows 2003 server on this machine few hours ago. In the old setup, I noticed two entries for Speed and Duplex in the network card properties. I have never seen two entries in any other server. After reinstallation, I am seeing only one entries for Speed and Duplex. Lets see if it solves the issue.

-Nauman.
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nauman_ahmedAuthor Commented:
Now this is driving me crazy. It is still having this issue. Here is what I have tried so far:

1. Changed the duplex speed
2. Change motherboard
3. Reinstall Windows
4. Changed cable
5. Change the port on switch
6. Rebooted switch

The network has a netscreen firewall and I am not seeing problem with any other server. The link goes down once in a while and I was not able to ping the server from outside until I disable and enable the network :(

-Nauman.
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ClickCentricCommented:
My money is still on the switch.  Don't suppose you have a spare?
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ClickCentricCommented:
Put another network card with a different mac address on the server.  It'd be a cheaper method to test it out than replacing the switch.  Or I just noticed the part about the netscreen firewall.  Have you reset and reconfigured that?  What you're describing I have seen before and when all was said and done, it had something to do with the mac address..unfortunately, I don't remember the exact details as it was some years ago.
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nauman_ahmedAuthor Commented:
I was thinking about resetting the firewall...will do so in the evening. If it will not work, will try the USB-RJ 45 card to see find the problem.

-Nauman.

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nauman_ahmedAuthor Commented:
I am not able to find a solution for this problem yet. I have tried everything but its not solving the problem. Thanks for your help and time. I will keep you posted if any solution was found.

-Nauman.
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