Network Cable is Unplugged

Posted on 2003-03-27
Medium Priority
Last Modified: 2013-11-09
I have a Windows XP machine with two network cards installed. One network card goes into the cable modem the other network card is running out to my laptop which is a ibm thinkpad with a 3com pcmcia card installed via cross over cable. I have installed the latest drivers for both network cards, bought a crossover cable, checked the pinning of it, decided to make my own cable, made it and tried it but still the same problem. I have no link lights from either network card on the desktop or the laptop. I have tried turning off auto-nego. on both cards and tried them at all levels (10-half 10-full. etc without any luck. I have completely removed both cards in safe moved on both machines and reinstalled. I have also set the tcp ip on the desktop card to the ip of and the laptop to and both ping localhost. I plugged the cable modem in the second network card on the desktop and it worked, and it also worked on the laptop. PLEASE HELP!
Question by:arciles
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Expert Comment

ID: 8222132
What's the objective here?  Are you trying to do ethernet without a hub?  While it can be done, you're better off going to the local computer store and buying a $40 hub or decent switch and save yourself time and aggrivation.  

If you really want to get fancy, get a 4 port broadband router.  Plug the cable modem into the wan port of the router, and plug the other two computers into the router as well.  That's it, setup IP addressing and you're done.

Expert Comment

ID: 8222205
Dumb question,  Have you tested both network cards on connections to the cable modem that you know is good?  Had to replace a network card in a system the other day for something similar.

Accepted Solution

Count_Onnet earned 152 total points
ID: 8222210
No link lights on either machine when they're hooked up to each other, but link lights when they're connected to the modem. It sounds for all the world like it's not really a crossover cable.  The pinout should be (from left to right when looking at the bottom of the plug):

White/orange, Orange, White/green, Blue, White/blue, Green, White/brown, Brown.

On the other end, the orange and green will be reversed, and the white/orange and white/green will be reversed.

White/green, Green, White/orange, Blue, White/blue, Orange, White/brown, Brown.

A regular Cat-5 will have the same pinout on each end.  (It should be one of the pinouts described above.  Only pins 1,2,3, and 6 are used for carrying data, so the blues and browns are pretty much left out of the story.)

If I'm wrong, (stranger things have happened), but the two computers communicate fine with the modem individually, consider using a router.  You can use straight Cat-5 cables, which seem to work fine for you, and you eliminate other potential problems with internet connection sharing.

Good luck!
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Assisted Solution

MCSE-2002 earned 148 total points
ID: 8228196
I bet your crossover cable is goofed. It seems like the only explanation.

I have made plenty of "expensive rope" while trying to make crossover cables.

try snipping both ends, and redoing them.

Good Luck!

Standard side

1. white orange
2. orange
3. white green
4. blue
5. white blue
6. green
7. white brown
8. brown

wacky, zany side

1. white green
2. green
3. white orange
4. white blue
5. blue
6. orange
7. white brown
8. brown

make sure when you put the caps on, the the nipple faces away from you,(the nipple is the little retaining clip)  and that wire 1 is on the left side.

Good luck!

Expert Comment

ID: 8232677
I'm curious about where we are on this one...is it a crossover cable?  Or are we looking for another answer?

Expert Comment

ID: 9152839
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Expert Comment

ID: 10088704
No comment has been added lately, so it's time to clean up this TA.
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