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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

66.0. "Concentrator in workgroup topology" by BACHUS::VERMEIREN () Thu May 17 1990 06:52

	Hi,

I have  i hope a simple configuration problem. 
When i use a concentrator as a standalone hub, can i connect decbridge 500's 
to it . On page 3-7 of the System level description they only talk about nodes 
and not about bridges.
I want to present a FDDI solution for a customer like this:

			|-----------|
			|    WC     |
			|-----------|
			   /      \
			  /        \
		       |----|    |-----|
		       | 500|    | 500 |
		       |----|    |-----|
			 /           \
		        /             \
		802.3 lan#1          802.3 lan#3

This configuration is just to start with and later on we can add other 
concentrators to create a real FDDI backbone .

Any answer will appreciated.
	ETienne Vermeiren
T.RTitleUserPersonal
Name		DateLines
66.1Seems fineCOMICS::WOODWARDSmile!Thu May 17 1990 08:345
    
    My understanding is that this is fine, and indeed is going to be a 
    normal entry point into FDDI 
    
    Steve
66.2I need the Sys-Level-Description...AUNTB::REEDJohn Reed @CBO = NPC for the Carolinas !!Thu May 17 1990 10:506
    I have just configured this option for a customer in S.C.  (They wanted
    to say that they "Had One...")  
    
    Now, do I use the flip, or a Non-flip FDDI jumper???
66.3KONING::KONINGNI1D @FN42eqThu May 17 1990 18:555
    Flip or non-flip jumper?  If you're talking about a direct jumper from
    the concentrator to the bridge (without patch panels in between) --
    there is only one type.
    
    	paul
66.4Thanks for the answerBACHUS::VERMEIRENFri May 18 1990 03:460
66.5Flips onlyMAMTS2::PKNIGHTPaul Knight@COL,MultiArea NetworksFri May 18 1990 13:3914
    re: .2 and .3
    
    Most existing DECconnect FDDI documentation still refers to both a
    crossover (flip) and non-crossover FDDI-to-FDDI Patch Cable.  This is
    part number BN24B-nn for the crossover version.  The non-crossover
    version (originally BN24C-nn) HAS BEEN DISCONTINUED (or was never
    stocked??)
    
    CROSSOVER (flip) cables are the only ones used.
    
    There is a fairly complete, but maybe convoluted discription of the 
    issue in the April 1990 pre-release version of the DECconnect System
    Planning and Configuraion Guide, Section 4.5.4.2.  The final version
    should be orderable from Northboro on May 30, order # EK-DECSY-FP.
66.6KONING::KONINGNI1D @FN42eqFri May 18 1990 18:145
    I think by "existing" you mean preliminary documentation.  The "real"
    documentation is supposed to contain no mention of non-crossover
    cables.
    
    	paul
66.7plug & play....CSC32::C_OUIMETTEWampeters and FomaWed May 23 1990 13:364
    	Of course, the FDDI-to-ST style cables are available in both flip
    and non-flip.......same part #'s, though......	;-)
    					Chuck