[jester620]

Hey guys,

I have five identical computers (Dell Dimension 4600's) WinXP Pro Sp3. However the network adapters are acting funny. I have gone through screen by screen and all are set to identical settings and using identical drivers.

---------------------------
Computer A
In order for it to connect at full speed on the internet, I have to modify the network adapter to run at 10Mbps/Full Duplex instead of Auto or 100Mbps/Full Duplex.

Network adapter set to 10Mbps/Full Duplex
Network adapter set to 100Mbps/Full Duplex
---------------------------

Computer B,C,D,E
Connects without any problems on it at all. Network adapter is set to Auto Detect and is connecting at 100Mbps/Full Duplex. They can connect to the internet at full speed with no problems.

Network adapter set to 10Mbps/Full Duplex
Network adapter set to 100Mbps/Full Duplex
---------------------------

Here is a quick diagram of how my machines are setup...

Now, I have had these machines set to where they connect to the internet fast (CompA-10mbps / CompB-100mbps), but the problem is I transfer alot of data back and forth between them and because of the 10Mbps bottleneck, transfers either take forever or they timeout/fail. Big problem!

Any suggestions?

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Regarding computer A, have you connected that machine to various different ports on the hub? Have you switched B/C/D/E to computer A's port? Have you swapped network cables between computers?

Edited by VinnyTAMU, 14 October 2009 - 08:34 AM.

[VinnyTAMU]

Regarding computer A, have you connected that machine to various different ports on the hub? Have you switched B/C/D/E to computer A's port? Have you swapped network cables between computers?

Edited by VinnyTAMU, 14 October 2009 - 08:34 AM.

[jester620]

Thanks for your reply.

I have tried moving cables to different ports, hoping I had a port fail on me.. No luck. I just moved Comp A to Comp B's normal location and still get the same type of speeds on speedtest. I also tried putting Comp A on a port on the hub that was unused. Same result.

Any ideas?

[VinnyTAMU]

Can you replace the NIC in Comp A with a spare NIC? If you are using the onboard NIC you could add a PCI or PCI-e NIC.

[jester620]

These NIC's are onboard. I don't have a spare PCI NIC available. I'll try to scrounge one up and try it.. I gotta open them all up soon anyway, I just bought some additional RAM for all of them.

[jester620]

Ok... this is interesting. I put in a Realtek RTL8139 Family PCI Fast Ethernet NIC. This NIC is showing the same issues as the internal. Sounds like something in Windows.

What kind of information can I provide that will help ID this problem. It's very frustrating!!

[jester620]

Update:

I'm posting in malware forum to make sure this isn't a side effect of an odd infection. Will post back when I get a clean bill of health. Thanks.