View Full Version : Win2k/XP network adapter only connects at 10Mbps
11-10-2001, 11:14 AM
I'm wondering if anyone's encountered this:
I have a PC running Windows 2000 and another running XP. They both have 3Com 10/100 NICs and are connected to a 10/100 autosensing switch (Linksys). If I set the cards to "auto detect" they drop connection to the network every few seconds, then reconnect. Microsoft's solution is to hard set the speed of the NIC. If I hard set them to 100Mbps, they do not connect at all, and if I set them to 10Mbps, they work correctly. I've tried another 10/100 card and another 10/100 hub but with the same results. I've installed the latest drivers for the NICs and updated the firmware of my switch. Any other ideas?
11-11-2001, 04:33 AM
Hmm. . . perhaps something wrong with your wires? How long are they? I really dunno what else could be the problem. . .
11-11-2001, 04:57 AM
Make sure your wires are CAT5, even CAT5e. Make sure they are straight through cables, not crossovers. If you hold both ends of the plugs up, the wires colors would match straight across the plug on both plugs. If not, you dont have the right cables. Make sure all your RJ45 plugs are ok (the wires inside are pushed all the way to the ends) and your wires are completely intact. If you have access to one, use a ethernet wire tester to test the quality and functionality. If all else fails, get a cable that you knwo is good @ 100mbps and try it out. If you're still having troubles, try swapping out NIC cards. After that, we're looking at driver/OS issues...
I 3rd that suggestion. It's probably the wires.
11-12-2001, 08:09 AM
Also grab yourself a crossover cable & connect the PCs together NIC to NIC & bypass the switch. This will let you know if your switch is flaky. Also try switching around the ports on the switch that you're plugged into. Sometimes individual ports will go bad...
11-12-2001, 09:00 AM
I had new CAT 5e cables I swapped with mine to check them and they didn't help. Neither did port switching. I'm wondering if there's just something with particular cards and autosense switches. I haven't tried the crossover yet; I don't have a 60ft xover cable and I don't have a set of crimpers anymore. Plus, I don't feel like dragging my Proliant upstairs ;). I think I have a couple of 100Mbps NICs around the office, I'll just try them.
Thanks for the suggestions, I'll let you know how I make out.
11-12-2001, 12:05 PM
Welp, sounds like a hardware/driver issue then.
Window$ might have loaded a generic driver instead of a NIC-specific driver. This happens a lot. It's kinda like the Standard VGA driver - it works, but it has limited functionality. Verify that the correct driver is installed, and check for updated drivers while you're at it.
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