On Fri, Jan 13, 2006 at 04:38:13PM -0600, Christopher Friesen wrote:
> Lennart Sorensen wrote:
>
> >Gigabit does NOT use cross over cables.
>
> I don't think this is always true. Some gigabit ports can autosense
> polarity and are able to use standard cables. Others require gigabit
> crossover cables.
Hmm, it appears you are right. I have never seen a non autosensing
gigabit port, so I thought it was part of the spec. Given the pairs all
send and receive already it seemed like an obvious part to include in
the spec.
Certainly a cross over cable made for 10/100 mbit won't work. It needs
the other two pairs swapped to. Most store bought cross over cables
seem to only have 10/100mbit in mind when they were made.
Proper pinout appears to be:
1 <-> 3
2 <-> 6
4 <-> 7
5 <-> 8
Len Sorensen
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