[rescue] 10Base-FL

[Harri Haataja]

On Fri, Feb 08, 2002 at 08:31:27PM -0600, Scott Newell wrote:
> >> Makes me wonder why Ethernet doesn't use STP cabling.
> >Cheapness.
> 
> Isn't using STP for ethernet an option?  I thought I'd seen shielded RJ45
> plugs before.

Indeed there are and I believe they're quite widely used.

>An STP installation might actually end up worse than UTP; if
> you screw up the grounding, you can end up with a nice antenna.

Indeed. Since there's a very good ghance of a ground loop, it looks
like (and forgive me if this would be in a nearby fine manual), do you
connect the shield only at one end or is there some other curious setup
there that I haven't noticed?

> Could be that the cheap magnetics on nics are more to blame than cable--if
> the cable is precision twisted pair, decent common mode rejection would
> cancel out the interference.

Apart from galvanic and frequencies that are just right.

But, indeed, cheapness is probably the reason you see more UTP than STP
around. As usual.

-- 
What is the greatest odd number?
	http://www.cs.hut.fi/~hcjake/odd/