| 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 |
Hi,
I have a configuration as below :
Terminal Servers
----------------------------|------------------------ ethernet
|
+========= DB900MX =============+
| |
| |
| |
| |
+========= DC900MX ==============+
/ | |\
/ | | \
/ | | \
Alphas VAX4000
. .
------------------------------------------------------- Ethernet
Alphas and VAX4000 are connected to the FDDI ring to form the FDDI
cluster. Ethernet is used as backup purpose.
Alphas and VAX4000 announced a LAT service through FDDI.
Terminal servers connected to the DB900MX can then connect to
the Alpha or VAX4000.
Questions are :
1/ since if DB900MX is dead, it will create single point failure.
Is ther a way to create an backup link so that even DB900MX
dead, the terminal servers can still connect to the host
systems ?
2/ from quite a number of topics here that, if the upper ethernet
is connected to the bottom one and LAT service is announced
out, it is not supported. When will LAT has the feature to
failover from FDDI to ethernet ?
Thanks,
Burance.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1501.1 | NETCAD::STEFANI | Look Ma, I'm drinking my oatmeal! | Thu Nov 17 1994 18:17 | 12 | |
>> 1/ since if DB900MX is dead, it will create single point failure.
>> Is ther a way to create an backup link so that even DB900MX
>> dead, the terminal servers can still connect to the host
>> systems ?
I can't answer your LAT questions, but I thought all of the DECbridges
support spanning tree in which you could have multiple bridges spanning
the same physical networks, but only one is performing the bridging
function at a time. You could then provide failover by using two
DB90MX's.
/l
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