Re: Doubling 100MBit ethernet by splitting the cable
On Fri, 23 May 2003, Paul Johnson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 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).
> You're thinking 10Mbps. 100Mbps uses four pairs.
Only for 100baseT4(which you can actually use cat3/cat4 cabling for!)
Near the bottom it explains all.
Gigabit over copper uses all 4 though.