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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

457.0. "Need concentrators every 2km?" by SGWS::SID (Sid Gordon @ISO) Thu Jan 23 1992 09:53

Can somebody confirm/clarify what should be a simple question?

The FDDI standard requires multi-mode fiber which supports a maximum
inter-station distance of 2km.  Does this mean I need a DECconcentrator 500
every 2kms?

Let's say I want to implement a multi-facility vaxcluster with two facilities
40 kms apart (as advertised!).  That's all I'm using the FDDI ring for.  Do
I have to have 20 concentrators along the way too, or is there some kind of
repeater which just regenerates the FDDI protocol along the way without
the funcitonality and expense of the concentrator?

Sid

T.R	Title	User	Personal Name	Date	Lines
457.1		MIPSBX::thomas	The Code Warrior	`Thu Jan 23 1992 10:40`	1
	Use single mode fiber and you can go 40km between concentrators.