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Is the power
strip also a surge protector? You only want one AC surge protector inline with
your devices. Use a power strip that is only a power strip (like an AC
splitter). Having two surge supressors in line has a strange effect of making
each one LESS effective by tricking the other in to thinking the surge is not as
bad as it really is and letting more noise through.
Actually, my tech and I are discussing power issues right
now. That seems to be the most likely culprit at this point. I think
we are going over to the water tower and change out the power strip and see if
that helps. All the POE's are plugged into the same power strip which is
plugged into the UPS. Our Trango has not burped once and it is plugged
directly into the UPS. Maybe our power strip is noisy or has a bad
ground. Will let you know what we find when we get back from the
tower.
Thanks for all your help - I sincerely appreciate
it,
Gloria
----- Original Message -----
Sent: Saturday, August 23, 2003 8:39
PM
Subject: Re: [smartBridges] help with
APPO problem
Do NOT rule out power. It could be a little too high
or a little too low and MOST ups units won't compensate for that.
Also, if there are large pumps there it's quite likely that
you are getting intermittent brownouts that the unit won't quite kick in
for.
See if a local electrician has a voltage recorder. We
saw many VERY strange copier problems caused by power issues.
It seems VERY strange that FOUR units would all do the same
thing at the same time. I've used 3 or 4 of them of late and had NO bad
ones. Only a dead eithernet port but that happened after a wicked
lightning storm and we also lost a computer nic card on that same system so
I'll not blame sb for this one.
I'm home if you want to call and talk about some of
this. The office line rings here too.
509.982.2181
marlon
----- Original Message -----
Sent: Saturday, August 23, 2003 6:31
PM
Subject: Re: [smartBridges] help with
APPO problem
It just keeps getting better. Now three of them are
down, which means only one is up. We know for sure now that it is not
the POE, the power supply, or the radio, unless the one I got in as a
replacement has the same problem as the one it replaced, which is highly
likely. Either all the APPOs have the same problem, including the ones
that are still shipping, or we have some kind of weird power problem.
Since everything is plugged into a UPS, I don't see how it could be power,
but I am not ruling out anything at this point. Now I just have
to try and convince the only tech on duty tonight to climb the water tower
again. This makes six nights in a row that he has had to climb that
damn tower. I know, I know we should have designed it with things on
the ground, but we didn't know we were going to have this much trouble with
the equipment, and we were trying to make the city happy and keep everything
as unobtrusive and out of sight as possible. It is too late to
redesign the whole system, we don't have the money to start all
over.
Gloria
----- Original Message -----
Sent: Saturday, August 23, 2003 8:03
PM
Subject: Re: [smartBridges] help with
APPO problem
Get a couple of 100' high grade extension cords.
Put your ups unit on the ground and when you need to reboot them just pull
the plug for 10 seconds.
Not a good fix but better that what you have till we
figure out what to do about the ap's....
marlon
----- Original Message -----
Sent: Saturday, August 23, 2003
11:39 AM
Subject: Re: [smartBridges] help
with APPO problem
Marlon,
My AC runs up the water tower from a breaker at the
base of the tower. There is an AC outlet in my NEMA box with the
UPS plugged into it, a power strip into that, with all the power
supplies and the D-Link switch plugged into that. All the cat-5 is
outdoor rated, shielded and gel filled, all cables tested with a cable
tester after being built up on the tower. As for lightning
arrestors, we haven't had any sign of lightning or a drop of rain in
months - this is north Texas where rain doesn't exist from June until
October. I don't see how I would run a power cord down the tower,
it just doesn't seem possible. We can try moving the cat-5 cables
around to different ports on the switch to see if it is one port on the
switch that is failing, but since we have had two different units fail
now with the same exact problem and they are on different ports, I don't
think that would tell us much.
Any more ideas - I am always willing to listen and try
different things,
Gloria
----- Original Message -----
Sent: Saturday, August 23, 2003
1:00 PM
Subject: Re: [smartBridges] help
with APPO problem
First off, run a power cord to the bottom of the
tower for a bit so you can just unplug it to reset everything
;-).
If multiple units are seeing failed eithernet ports
you might need to look at your switch. Also, might want to make
sure you have good lighting arrestors on the cat 5 ports.
In almost 4 years of this wisp stuff I've only lost
a couple of ethernet ports and both of those were at the same place
and on the same linksys cable router.
Until this fall. We lost two sb radios with
dead ethernet ports durning a storm. One ap and one
client. At one location the homeowner also lost the ethernet
port in the dell computer. At another location all radios are
fine but the customer lost a nic in a dell computer.
I'm thinking that there may be some crappy ethernet
ports on the market?
marlon
----- Original Message -----
Sent: Saturday, August 23, 2003
9:50 AM
Subject: Re: [smartBridges]
help with APPO problem
Marlon,
I don't have any spares here. The only
extras I have are the one we took down night before last that we
thought was bad, and an indoor that was sent to me instead of an
outdoor.
We replaced the POE with a known good one on
Wednesday night, we replaced the radio itself Thursday night, and
replaced the power supply last night. So far it is up, but it
usually takes about 24 hours for it to go down.
Now a different one is down - same problem - dead
Ethernet side, can't talk to it. This is the first time this
one has gone down since we put them up three or four weeks
ago.
If you have any more ideas, let me know. I
am willing to try anything at this point, if my techs don't quit
because they are sick and tired of climbing the water tower every
night to either reset something or replace something.
Thanks for your help,
Gloria
----- Original Message -----
Sent: Saturday, August 23,
2003 10:24 AM
Subject: Re: [smartBridges]
help with APPO problem
You have other ones there right?
First, swap ethernet ports on the switch.
Swap power supplies and then power injectors (I just had a bad
power shot) with a known good working unit.
If none of that works, swap the ap with a known
good working unit. If the problem moves, yep, really bad
luck! If the problem stays with another radio, it's
environmental.
I know when we first got started we were on one
end of a 30 mile ptp wmux link. It would totally shut down
my radio. Similar to what you are seeing.
Call me and let me know what you find or if
you'd like to talk about this a bit more.
*Time to learn those trouble-shooting techniques
;-)*
marlon
509.988.0260 cell
----- Original Message -----
Sent: Friday, August 22,
2003 6:30 PM
Subject: [smartBridges]
help with APPO problem
Anyone got suggestions as to what is causing
one of my APPOs to go down? We have had to climb the water
tower and reset it three times in the last week. We
replaced the POE on Wednesday and it went down again
Thursday. I ordered a new unit overnighted and replaced
the unit last night. It worked great all day today, but is
down again now. The outdoor rated cat-5 run is only about
20 feet, the cable was tested with a cable tester before putting
it in place, everything is water proofed (even though we haven't
had rain in months). What else is there? The POE was
replaced, the entire unit was replaced, and we still have the
same exact problem. When it does this, the Ethernet LED is
off, the Power and TXRX LED is on solid, and we have no
communication with it. Did I get so lucky as to get two
bad units with the same exact problem? The only item that
has not been replaced is the power supply - could that be
bad? All the other units on the water tower are working
fine since I upgraded the firmware last Sunday. They are
all plugged into the same switch, which is plugged into a UPS
and all of it is in an air conditioned NEMA box.
smartBridges tech - or anyone -
help!
Thanks!
Gloria
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