Re: Doubling 100MBit ethernet by splitting the cable

[Matthew Daubenspeck <matt@oddprocess.org>]

On Wed, May 21, 2003 at 05:35:52PM +0200, Grzegorz B. Prokopski wrote:
> Long time ago I've read that 100mbit ethernet uses only 2 pairs
> which leaves half of wires unused and thus when there's such a
> need - these can be used to create second 100mbit connection
> on the same cable (and connect second computer w/o the need of
> another cable).
> 
> I've googled quite much and I am sure that's possible (with all
> doubts that it's non-standard solution etc.) [0]. But I still
> can't find good description (with images/asciiart preferred) of
> how to do this exactly?

I thought it was 10mbit that only used 2 pairs, not 100.

We build (in a pinch) splitter boxes for this very reason, but they
only ever work at 10.