| 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 need a FDDI/DAS (dual attached system) solution for a DECstation. My
customer wants to have 4 DECstations dual attached in a FDDI ring.
The only solution I can come up with might be a 3rd party VME based
FDDI/DAS board.
Does anyone know of any 3rd party VME FDDI/DAS borads that work with
our VME I/O adapter for the turbo channel?
Thanks
/ed
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 401.1 | KONING::KONING | Paul Koning, NI1D | Mon Nov 25 1991 14:47 | 5 | |
I'll ask the obvious question: what's the specific requirement that makes the customer look for DAS? Depending on the answer, there may be other solutions that may be acceptable. paul | |||||
| 401.2 | it's DAS only... | TOOHOT::ROCHA | Mon Nov 25 1991 16:53 | 7 | |
.1 - This is an R&D group investigating FDDI/DAS and our SAS solution
just doesn't cut it. This is a DCS (Distributed Control System)
vendor that wants to understand the dual ring attributes of FDDI for
plants that tend to blow up when out of control or the network drops
off...
/ed
| |||||
| 401.3 | KONING::KONING | Paul Koning, NI1D | Tue Nov 26 1991 11:54 | 16 | |
I'm still confused... It sounds like either: 1. the customer wants to play with DAS, to see what DAS is like, so obviously only DAS will do, or 2. the customer believes that for this application, attaching everything to the trunk dual ring with DAS is best. If 1, then about all I can say is "sorry to see him waste the time". If 2, then it would be worthwhile explaining why other approaches will result it a MORE reliable and MORE fault-tolerant (i.e., more explosion-tolerant) network. FWIW, I've helped design some FDDI configurations around concentrators for applications such as refineries, where "what happens to my network when some corner of the site goes up in flames" is a real issue. paul | |||||
| 401.4 | can you help? | TOOHOT::ROCHA | Wed Nov 27 1991 13:20 | 9 | |
.3
Your right about case 1.
And I thing you're going to be right about case 2! If you're the right
source and available to talk to the customer, then give me a call and
let's see what we can do to bring them around...
/ed
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