I have seen when a UPS goes into a "Fault" during the transfer, it is
enough to reboot a device because the transfer was too slow.  I have
also seen when the power company "Powers-Up" for the day, because of the
morning rush, cause an over-voltage on the UPS and causes it to fault.

If you put these two together, if the power company pushes up the
voltage, it causes the UPS to throw an over-voltage, thereby putting it
to battery.  If the transfer wasn't fast enough, it could potentially
cause the units to reboot.  Try unplugging the UPS several times to see
if it causes the reboot.  Might also try jacking into the UPS and read
the logs to see if it did trip for some reason.

Eric


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Don Annas
Sent: Wednesday, February 21, 2007 7:32 AM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; 'WISPA
General List'
Subject: [WISPA] Trango reboot incident

 

 

Guys, this morning around 4:40 eastern, we had an odd incident occur.
We
had about 3 SUs reboot at the same time and then re-register.  I checked
each of the SUs and according to the uptime they all rebooted.  This
wouldn't seem odd to me if it was just these 3 SUs as they are
associated
with the same AP and they are the 5850 fox units.  The odd part is we
have a
Trango Link 10 in that sector as well, and the remote side of that radio
rebooted at the same time as the SUs.  The radios are on different
buildings
as well as different subnets and I know that at least 2 of the SUs and
the
Link10 are plugged into a battery backup.  Any idea what could cause
this?

 

-         Don

 

 


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