[HECnet] FDDI advice

[Hans Vlems]

A gigaswitch/FDDI, or a dechub    900 module?
The gigaswitch were very reliable, a pleasure to manage.


Van: Brian Hechinger
Verzonden: donderdag 10 oktober 2013 14:44
Aan: hecnet at Update.UU.SE
Beantwoorden: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] FDDI advice


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