[rescue] Re: CDDI/FDDI from Cisco (old stuff--any good?)

[Jonathan Katz]

I wrote:
> > Switched FE (full-duplex) doesn't have collisions. Only half-duplex 100Mbit
> > and 10Mbit (full and half for 10) collide.

Josh asked:
> Does switched half-duplex have collisions?  Because I know that I have
> seen FE collisions.

Pardon my poor phrasing.

Switched FE, full-duplex doesn't have collisions.
Switched FE, half-duplex collides
unswitched FE, full-duplex collides
unswitched FE, half-duplex collides

switched 10Mbit, full-duplex collides (I think?)
switched 10Mbit, half-duplex collides
unswitched 10Mbit, full-duplex collides
unswitched 10Mbit, half-duplex collides

switched 1000Mbit (GB) won't collide, either.