| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
I am installing a DECHUB 900 MultiSwitch with four DECconcentrator
900MX. This is a standalone HUB which will have 6 AXP VMS machines
attatched. We need to have a primary and a secondary FDDI ring on
this setup. Being illiterate when it comes to the new network
equipment I would appreciate a pointer or two on how to setup the
two rings.
I have gone through this notes file and there is a lot of information
presented and I'm sure my answer is in there, but I can't understand
half of what I am reading.
Thanks
Bruce
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3267.1 | NETCAD::DOODY | Michael Doody | Mon Feb 12 1996 10:53 | 9 | |
You could start with the FDDI configuration guide in note # 2340.
Not sure what you mean by primary and secondary. Perhaps you mean dual
homing. In that case you'd connect all the concentrators together in
a dual ring in the hub backplane with Hubwatch, then connect each port
of the DAS on the workstations to a different concentrator, thus
gaurding against a fault in any one concentrator or cable.
-Mike
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| 3267.2 | STRWRS::KOCH_P | It never hurts to ask... | Mon Feb 12 1996 15:04 | 6 | |
I agree with Michael in .1, but to really make it fault tolerant, put
dual controllers in the AXP machines. Even with FDDI dual homing and
N+1 power in the DEChub, the NIC card is still a single point of
failure, regardless of whether it's a DAS card. DAS simply provides
path redundancy, but two controllers along with items mentioned in .1
provide total redundancy.
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| 3267.3 | HUBwatch | FREEBE::B_ROSE | Tue Feb 13 1996 06:12 | 7 | |
It sounds as the HUBwatch software is required to set up the "dual"
rings. I copied down the notes entry mentioned and will go through it
before I try anything else. As for the second card .. it'd be nice, but
we have gone almost two years without a "glitch" with the card in there
so it'd be tough to sell them a second card.
Bruce
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