🚀 go-pugleaf

In article <Brr3vF.4p0@world.std.com>, nectar@world.std.com (Jacques A Vidrine)
writes:
> Simple question, but I don't expect a simple answer.
> 
> Can FDDI and Token Ring be run on the same ring?
> 
> My organization has in place a 16Mbps Token Ring network using the
> IBM Cabling System with optical fiber.  It is our goal to move to
> FDDI in the future.  Thus the question.
> 

I think that this is absolutely not possible, since more than just technological
problems arise (layering, mechanisms, etc.). Both concepts are often named
token ring, but the "Token Ring" is a single token mechanism and "FDDI" uses
the concept of a multiple token. The MAC layers differ for that reason in
almost every single item. The coding schemas are totally different (Manchester
vs. 4b/5b). FDDI uses a bunch of timers, which the "Token Ring" never heard of!

It may be possible to use the same fiber optics as media, but I am not familiar
with them in detail.

Regards, B.Stiller
--
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Burkhard Stiller          Kaiserstrasse 12          Tel.: +49 / +721 / 608-3983
Universitaet Karlsruhe    D-W7500 Karlsruhe 1       FAX:  +49 / +721 / 606097
Institut fuer Telematik   E-Mail: STILLER@telematik.informatik.uni-karlsruhe.de
		                  STILLER@ira.uka.de
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