Giga speed cable only runs at 10MB/s!

[ohif]

I recently ran a few extra runs and just have one simple problem. The connection only runs at 10mb/s. I want and need it at 100mb/s Full Duplex(like all the others). Heres the weird thing. When I connect the patch cable(made myself), it connects at 100mb/s but drops packets. I will ping and it will comeback with maybe 2 replies. Then I set the speed on the NIC to 10mb it works great. So it sounds like a cable problem. Which it is because when I connect a manufactured patch cable it works fine doing 100 Full. I make the cables the same way that the working one is. I have made a few different ones and even had a fellow employee try. Does anyone know what I am missing here?? Thanks alot

 

[MarvO1]

Are you making your patch cables from solid, or stranded wire, and are you using plugs that are made for solid or stranded wire? It makes a big difference on how they bite into the wire for a good connection.

MarvO said it

 

[Degg]

You may not be getting a good crimp when you make the cable. A cheap pair of crimpers can cause problems. You also need to make sure you get the wires all the way into the connector, or they will not crimp well. Is there any reason you need to use a custom cable? I would suspect length is the only reason, otherwise I would use a manufactured cable.

Degg
Network Administrator

 

[ohif]

Thanks for the help guys. I ended up rewiring(again) the patch panel, and wall outlet. They were working fine before so that didn't help. I had been making the patch cable just straight through. I tried a cable I had made that was T568-B standard for the patch cable and it worked. So I made a T568-B patch and it worked! I have no idea Y a straight through would work any different than the B but it did so that mess is over with. Thanks again.

 

[franklin97355]

Just for info T568B is a spec of how the wires are aligned in the plug and has nothing to do with whether the cable is straight through or not. If you mean crossover then that is different.

 

[Bobg1]

If you made a straight through cable and it was not to 568a or 568b standard it would cause the problem you describe because you would not be keeping the signals within the proper pairs, you would be running split pairs which would then give no signal protection.
Either of the proper standard made cables will actully work for you.