Fddi was the answer for production plants that required 100% uptime Only once did Fddi let me down and made me go back to work at 3:30 am, the worst time to wake up. One of the boards in a gs/fddi failed, isolating two plants. I did manage to explode a power supply in a gs. Made one hell of bang, fortunately that part was redundant so the net stayed up. Compared to fast ethernet, I prefer fddi. Too expensive for private or hobbyist use though. Van: Paul_Koning at Dell.com Verzonden: donderdag 10 oktober 2013 17:20 Aan: hecnet at Update.UU.SE Beantwoorden: hecnet at Update.UU.SE Onderwerp: Re: [HECnet] FDDI advice On Oct 10, 2013, at 10:35 AM, Brian Hechinger <wonko at 4amlunch.net<mailto:wonko at 4amlunch.net>> wrote: On Thu, Oct 10, 2013 at 02:32:26PM +0000, Paul_Koning at Dell.com<mailto:Paul_Koning at Dell.com> wrote: ... Then there is the Gigaswitch, a large modular chassis with lots of line cards, some FDDI, some Ethernet, possibly some with other stuff I don't remember. I think this is the one I had. Big modular thing. Maybe (and going by really fuzzy memory here) 8U high? I was going to say "that sounds right" based on my memory of seeing one gathering dust around here. But the picture here: http://www.global-itcorp.com/products/digital-dec/networking/gigaswitch/ shows a much taller enclosure, half line card space and half power supply. Each section does look like 8U or so. Some searching turns up refurbished Gigaswitch modules. Some are pretty cheap, but it looks like those are ATM ones, the FDDI ones I see quoted are more expensive. Perhaps because FDDI was fairly successful at least for a short time, while ATM (as a LAN) was an utter failure. paul