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Mystery cat5e works on one computer but no others

E

Ephect

Senior member
So I have a long cat5e, probably about 30 yards, it works on a pc five feet away from the ethernet jack, but when I try it on any other of the two pcs fifteen feet down the hall it doesn't work. I've tried three nics, all working, one out of the box. One box is running Win2k, the other 98. Not even a link light comes on. No connection detected, any ideas why or how to fix this?
 
There isn't another standard CAT5e to reach 15 or so feet. This one, the long one, works for this PC five feet away from the jack, and on nothing else. It's certainly not bad hardware. It's all been re-tested and one new NIC was bought. The NICs respond (the two comps that won't work with the long cable) to a crossover between the two, but that doesn't benefit me as I still don't have web access, just a two computer network. The cord is good, the three cards are good, one is a fresh 98 install, it...just doesn't make sense.
 
Chances are the cable is not terminated properly (pair order). The one NIC that "works" is probably not working at full efficiencybut has more tolerant electronics.

Either that or you've got a broken conductor or two ... it's a positional thing.

That's my best guess.

Re-terminate both ends according to the spec and see it it fixes it.


Good Luck

Scott
 
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