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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

314.0. "Please comment on this design." by CGOOA::BARNABE (Guy Barnabe EIS - Canada) Fri Jul 26 1991 20:49

I am looking for feedback on the following:

	8 floor 2121 --+--
          DEFEB-??     |
        DECbridge 500  |
                       | <-- STP ???
                       |
                       | (riser) 40M 
                       |
                       |         500m              |
                      -+---------------------------+-
 basement  2121   DECconcentrator 500              | 1825 Lorne
                  DEFCN-AA                           DECbridge 628
                  DEFCN-E*                           DEFEB-DS
                  DEFCN-S*


The first riser is in one office building.  The 628 would be about 
500m away in the telephone equipment building.  

The 500m ring stretch will expand to 15km when the rest of the city
is added to the ring.

Customer was hoping to play with all 3 of our offerings.  Adding
STP would be a bonus.  Telco's love anything that is Fiber or
STP related!!!!

The fallback is to do low power or multimode betwwen the concentrator
500 and the DECbridge 500.  The 500m stretch will be single mode.

-- thanx for your comments,
   Guy

T.RTitleUserPersonal
Name
DateLines
314.1Some suggestionsJUMP4::JOYGet a life!Mon Jul 29 1991 13:4616
    Guy,
       A few small nits.... the DECbridge would be a DECbridge 510 as the
    500 is being retired with the 510 replacing it (unless they already hve
    the 500). As we mentioned in the previous note, there is no STP
    connector for the bridge, so you could use the low-power optics on the
    CON (DEFCN-L*) to save cost per port. 
    
    Are you saying that the link to the 628 will expand to 15Km or that the
    link from the 628 to the rest of the city will be 15Km? You can mix
    multimode and SMF in on backbone, so if the 500m link that you show
    will remain at 500m and the next link out of the bridge will be 15Km,
    then I'd suggest you use a DECbridge 626 to give the mixed backbone and
    minimal cost.
    
    Debbie