[HECnet] FDDI advice

Kari Uusim ki uusimaki at exdecfinland.org
Thu Oct 10 18:29:59 PDT 2013


The DECconcentrator900TH has twelve FDDI twisted pair ports.

If someone is interested I can send the latest Digital Networks product catalogue (pdf) where the GigaSwitch and DEChub900 modules are shown.


Kari


On 10.10.2013 20:10, Hans Vlems wrote:
The 900 series didn't support cddi iitc

*Van: *Mark Wickens
*Verzonden: *donderdag 10 oktober 2013 16:59
*Aan: *hecnet at Update.UU.SE
*Beantwoorden: *hecnet at Update.UU.SE
*Onderwerp: *Re: [HECnet] FDDI advice


On 10/10/2013 15:32, Paul_Koning at Dell.com wrote:
>> On Oct 10, 2013, at 8:44 AM, Brian Hechinger <wonko at 4amlunch.net> wrote:
>>
>>> On Thu, Oct 10, 2013 at 02:36:04PM +0200, Peter Lothberg wrote:
>>>> ...
>>>> 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.
> DEC made at least three.
>
> The original one is the DECbridge 500, a 3U rack mounted device, 3 or
4 cards, 3 Ethernets (10 Mb/s) to FDDI. See the DTJ issue I mentioned in
my previous note.
>
> The other two: the DECbr idge 900, which plugged into the 900 series
modular enclosure. It's about the side of a 400 page hardcover book,
FDDI to 6 Ethernet ports, 60,000 packets per second using a MC68040 at
25 MHz. I'm still proud of that. (I wrote the "fast path" packet
forwarding firmware.)
>
> 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.
>
> paul
I meant to say that I have a DEC VNswitch 9 00XX plugged into a DEChub
One MX - there are clearly modular parts to that, but I'm presuming
there isn't a FDDI copper module that I would be able to use?

Thanks, Mark.

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