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Or maybe a better power supply filtering on the
inexpensive poe power wall wart??
----- Original Message -----
Sent: Tuesday, September 09, 2003 8:33
AM
Subject: RE: [smartBridges]
dis-association again?!
Nish,
Thanks for at least re-assuring me that you guys
are looking into it!
I have a suspicion of what may be happening.
I've noticed that those who have this issue are also the same customers who
have maybe one or two power strips with every electronic product imaginable
plugged into it. I see this alot, but it doesn't seem to occur for
everyone. Maybe some of these customers keep the other electronics
turned off, and everything is ok until they start turning more things
on? I know that if there is a "brown-out" the radios may not associate
or may dis-associate. Many of these homes have old electrical wiring
-the type without a proper ground receptacle. With our APPOs, we had to
have the management re-wire the electricity in the basement office to provide
proper ground. This also seemed to help some of our equipment work
consistently.
If you guys think this may be the problem (or "a"
problem) perhaps SB can provide a software tool that measures input power
levels (hopefully without needing to add hardware)? Or have a light on
the powerShot to indicate faulty power levels?
Kind
regards,
Sevak
On Mon, 2003-09-08 at 11:25, Nish Park wrote:
Sevak,
We have been trying to understand this ?Occasional
Dis-association issue? for quite some time but it has been an illusive
problem. We have been unable to reproduce the problem, even after we brought
units back from the field that exhibited the problem. Below is what we know
about it so far and what we are trying to do. Hopefully this info may help
in your situation.
The symptoms are - at random
intervals the airBridge will loose association and will not regain. A simple
power cycle, software reset or just doing rescan will establish the
connection. In a large majority of cases we find that reverting to the
setting of Long Pre-Amble (factory default) will clear the problem. Many
other times we find the combination of over powering the RF side with Amp
tends to create problem. And other extreme is that installations with low
RSSI and LQ values and not enough fade margins have this problem too. We
even had people report that just exchanging units from subscriber A to
subscriber B took care of the problem.
All this points
to the instability due to RF and interference related issues. In many cases
it is possible to clear the problem. Yet there are a few cases when these
steps do not help. It appears that in these instances, the re-associate will
not happen till it is rebooted. And due to the sporadic nature we have been
unable to track down the root cause of it.
In order to
provide some interim solution, we have developed a software utility
?simpleStatus? that acts as a watchdog timer and reset the unit under
certain conditions. This software is helping many users and you can get a
copy by writing into the support desk. This software is a slimmed down
version of the simpleMonitor without any configuration buttons and enough
dancing lights so you can give it to the subscribers without loosing
control. Our next step is to try to put the same code in the
firmware.
As we have been doing the
research to find the root cause, interestingly we have learned that
virtually EVERY manufacturer?s equipment suffers from this symptom. We found
similar user complaints, similar manufacturer?s answers. Users coming up
with their home brew solutions like periodic pinging the devices, some even
going as far as hardware gizmos that would periodically power cycle the
devices etc. I am sure all of these things help in different cases and make
the issue smaller and smaller. We are also incorporating some of these items
in our newer products to increase the robustness. Some measures we
understand and some measures are incorporated for motherhood sake.
Hopefully someday we all will get to the bottom of this
unexplainable industry phenomenon.
Nish
-----Original
Message-----
From: Sevak Avakians
[mailto:[EMAIL PROTECTED]
Sent: Monday, September
08, 2003 9:07 PM
To: [EMAIL PROTECTED]
Subject:
[smartBridges] dis-association again?!
I posted this problem earlier hoping that someone
from sB would respond to my question, but they didn't yet.
Would
someone from sB tech support please tell me what is going on here?
Now, I have 3 customers who are having issues with the airBridges. One
day everything is ok, but a day or two later and they cannot get onto the
Internet at normal speeds. The speed is EXTREMELY slow and usually
just times out. 2 of these customers are within a few meters of the
access point and the 3rd is a block away. I've noticed that if I
unplug the airBridge and replug it back in, everything is ok
again.
Since I don't want to keep going to customers' homes to unplug
and replug airBridges, will sB please help me out with this issue? My
customers are very vocal in their community and will spread bad news about
our service if this issue isn't resolved.
Thank you,
Sevak
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