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Fast traffic from server, but slow traffic to client

Medium Priority
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Last Modified: 2012-05-11
Hi, and thanks for any assist...

I have a client with strange network problem.  In a simple client server setup (MS SBS 2003 and  XP clients, and a simple 16 port DLink Gigabit switch and a patch bay sitting between all clients and the server. Only one client is experiencing application issues with a client-server application.  When trying to reinstall this application from the server, it was taking abnormally long, so I finally tried to test connectivity between this client and the server. To test this, a transferred a 350mb file from the client to the share drive on the server, which was very fast (<6 minutes), but when transferring the same file back from the server to the client, it was estimated to take 3 hours.  

No other performance issues with the affected client.  Plenty of RAM, CPU's are not challenged

I tried three other clients with the same test, and all sent and received with excellent performance.

So, my questions are: does this sound like a NIC issue? Or something else?  What can I do to staple down the root cause?

Thanks lots!

Mark
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Mark LitinOwner

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Commented:
Thanks all,

It was the built-in NIC, which I replaced with a new one.  Diagnostics for the old NIC did indicate that full-duplex was engaged, but still crummy writes from the network, although internal writes were fast.  All is right now.

Thanks o the insights!

Mark
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