[HECnet] FDDI advice

[Brian Hechinger]

On Thu, Oct 10, 2013 at 02:36:04PM +0200, Peter Lothberg wrote:

FDDI/CDDI is a dual ring token ring bus, with 4470 MTU byte packets,
it has 802.-- frames. DEC had a mode where you turned the token off
and used it for ptp full duplex.

I didn't know about the ptp thing. That's nifty.

For example cisco/cabletron/crecendo had ethnernet switches with a
FDDI uplink, that you could use.

DEC made one as well, it was that large modular thingie. I used to have
one. Never got it powered on as it was enormous.

But you need nothing to build a FDDI ring, its a A and a B ring, you
can just plug the cards together with fiber-patch-cables.

Unless you have one of those obnoxious single attached station cards.

-brian