| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 4227.1 | | NETCAD::DOODY | Michael Doody | Thu Feb 20 1997 09:33 | 10 |
| It means that power supply #1 (upper left) was bad.
It was probably an intermittent thing if there is only
the one error log entry. The time stamp 0 1000 means
the problem occured at 10 seconds uptime. So maybe the
supply was a little slow to come up to voltage.
Certainly it is reason to view the supply with suspicion.
-Mike
|
| 4227.2 | | LEMAN::PAIVA | Hawkeye - Network Support @GEO | Thu Feb 20 1997 16:22 | 10 |
| Mike,
Thanks for the reply. Do you mean that you agree with me and that you
wouldn't suspect the mains where the hub is plugged to (it was plugged
in an UPS)?
Cheers,
Pedro
|
| 4227.3 | | NETCAD::DOODY | Michael Doody | Fri Feb 21 1997 09:14 | 6 |
| Sorry, I don't know how a UPS might affect it. In general,
a power supply error log entry is a bad thing. You might ask
Bob Macarthur netcad::b_macarthur about it.
-Mike
|
| 4227.4 | Move the supply & see if problem moves with it.... | NETCAD::BATTERSBY | | Fri Feb 21 1997 09:49 | 6 |
| One way to verify for sure if it is the power supply (especially
if this error is repeatable), but I'm not sure that this is the
case here, is to move/swap the power supply to one of the other
3 locations in the HUB, and see if the problem moves with the supply.
Bob
|
| 4227.5 | Moving PSs done | LEMAN::PAIVA | Hawkeye - Network Support @GEO | Fri Feb 21 1997 10:08 | 10 |
| Bob,
That's what I thought of and swapped the 2 power supplies that the hub
contained with the two that another hub contained to see if the problem
would "follow the PS" but didn't. I also could see the same error
regarding one of the power supplies in the other hub that had occured
BEFORE the swap. Both hubs are on the UPS, hence my suspiscion.
Pedro
|
| 4227.6 | Remote possibility of low output line voltage from UPS... | NETCAD::BATTERSBY | | Fri Feb 21 1997 12:27 | 14 |
| The only way it could be the UPS is if it is putting out a "soft"
line voltage IE: a line voltage on the low side. So what remotely
could be happening is that a power supply in each hub (due to some
component tolerances), could be sensitive to low line voltage.
So maybe the next experiment to try is to eliminate the UPS for
a while and see if the problem occurs. With regard to the frequency
of the problem occuring, obviously if the problem doesn't re-occur
to frequently, it's going to be a little hassle chasing it down to
either a couple of suspicious supplies or the UPS. Some patient
experiments are probably of the order.
I too would recommend sending mail to Bob Macarthur as he is the
knower-of-all about the HUB power supplies and their expected behavior.
Bob
|