| 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 |
I'm trying to configure a poor man's FDDI. What I'm proposing appears
to be a legal configuration according to the NACBG. It is as follows:
|---------| ^
| VAX | |-----------| |
| 7000 w/ | | DECbridge | |
| | BNE24B-XX | | |
| DEMFA |_____________________| 520 |___|
|_________| FDDI |___________| | e-net
|
|
V
The idea is to create a high speed funnel into the VAX.
NOTE: the absence of a concentrator. I know the FDDI controller 400
is a SAS device, but we're trying to simplify our config for $ sake.
The customer is convinced that this is what he wants. Is this
a legal FDDI configuration. Should we strongly recommend against this?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 692.1 | Perfectly legal | DECEAT::KALKUNTE | Ramsesh Kalkunte 293-5139 | Thu Sep 03 1992 20:25 | 1 |
Concentrators help only if you have more than 2 FDDI nodes on the ring. | |||||
| 692.2 | Legal? Yes, but does it add value? | BAGELS::LEVY | Thu Sep 03 1992 21:04 | 3 | |
> The idea is to create a high speed funnel into the VAX.
The throughput of this configuration is no better than using a DEMNA.
| |||||
| 692.3 | Consider a DECbridge 6xx ? | LARVAE::HARVEY | Baldly going into the unknown... | Fri Sep 04 1992 08:09 | 5 |
Re: -1. I agree - but if you were to use a multiport bridge and separate
your ethernet devices over the multiple (3) segments you may begin to see
performace/throughput enhancements....
Rog
| |||||
| 692.4 | KONING::KONING | Paul Koning, A-13683 | Fri Sep 04 1992 16:20 | 6 | |
As has been said here several times before, that configuration is legal, valid, and supported. In the past there has been some confusion on this and some claims that it should be discouraged, but that is incorrect and I hope this misunderstanding is fading away. paul | |||||