| 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 working on a bid that will involve a lot of FDDI connectivity.
The customer is setting up a citywide FDDI ring. We are proposing a number
of alphaserver 8400's as network servers etc. I want to connect to the
ring which using PCI FDDI cards is easy to specify. However the city in
question in in part of the former USSR and I have my doubts about the
reliability of the citywide ring. I want to bridge the Datacentre LAN
so that it will continue working in the event of an external ring failure.
This is also important as the Alphaserver will be running in a DECsafe
configuration.
My question is the following:-
Can a DECconcentrator 900MX or a DECswitch 900EF in a DEChub perform this
bridging {Isolation} functionality or do I need something else to make it
work. We are proposeing a star topology from the DEChub to the servers. Will
I get a dual FDDI ring anyway ? which I understand is not legal.
Stephen Davies
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1871.1 | Guess it really depends on.. | NETRIX::"[email protected]" | Steven Freke | Mon Nov 20 1995 12:29 | 14 |
Stephen From what I understand is you are concerned about what would happen if a station failed or a bridge failed. Well if You set up a true FDDI ring using Dual Homming, then the the ring would wrap away from the break. If I am thinking of the right thing, then if you have a star topology then you are stcuk with a single point of failure. Not advised. I am not sure if you can have a ring in this way, and what rules apply. Maybe someone else can answer that for you. S Freke LAN Team UK CSC [Posted by WWW Notes gateway] | |||||