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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

87.0. "FDDI-to-FDDI Bridge/Router?" by ZPOV01::HWCHOY (FE110000) Sun Jul 08 1990 23:21

    Is there any plans for an FDDI-FDDI bridge or router?
    
    The primary reason for doing this is to segregate traffic to sub-FDDI
    LANs. People are concerned that if we run a VAXcluster over FDDI, then
    there may not be enough bandwidth if we also put couple of hundred
    workstations with workgroup servers. What I'm looking for would be:

      o o o main Ring                     o o o local ring (with servers
     o     o                             o     o            and  workstations)
    o       o-------------x-------------o       o
     o     o                             o     o
      o o o                               o o o
    
    o = concentrators
    x = FDDI-FDDI Bridge/Router
    
    
    If such a product does not exist or planned, can I compromise using
    DECbridge 500s like so:

      o o o main Ring                     o o o local ring (with servers
     o     o                             o     o            and  workstations)
    o       o----x====+       +====x----o       o
     o     o          |       |          o     o
      o o o           |       |           o o o
                     +---------+
                     |  DELNI  |
                     +---------+
    
    x = DECbridge 500
    
    I understand the bottleneck at the Ethernet, but we are assuming that
    intersite traffic load is acceptabel on Ethernet.
    
    Rgds,
    Heng-Wah

T.R	Title	User	Personal Name	Date	Lines
87.1	Some product managers	MARVIN::COBB	Graham R. Cobb (Wide Area Comms.), REO2-G/H9, 830-3917	`Mon Jul 09 1990 10:56`	5
	As far as possible future FDDI-FDDI bridge/router products go, you should talk to either of Neville (JANUS::) Fleet, part of CBN business management, or Jim (DELNI::) Capobianco, a product manager in the LAN group. Graham
87.2		KONING::KONING	NI1D @FN42eq	`Mon Jul 09 1990 19:14`	5
	...and as for a "place holder" available today, the bottom picture you showed (back to back LANbridge-500s) will work just fine, at a 10 Mbit/second rate of course. paul
87.3	THANX!	ZPOV03::HWCHOY	FE110000	`Tue Jul 10 1990 00:06`	7
	re.last few Thanx for the names and comments, will pursue the issue offline. Rgds, hw
87.4	use thinwire	UTOPIE::HONISCH	Guenter Honisch CS Austria	`Mon Aug 20 1990 09:46`	2
	Why te DELNI ?? use the Thinwire port of the Bridges, and just connect a short segment.
87.5	just in principle, anyway will be fine	ZPOV03::HWCHOY	It must be Thursday.	`Tue Aug 21 1990 04:22`	1