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AMX Troubleshooting Help Needed
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Alessandro Miglio  
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 More options Jul 19 2012, 12:27 pm
From: Alessandro Miglio <alex.mig...@media.berkeley.edu>
Date: Thu, 19 Jul 2012 09:27:31 -0700
Local: Thurs, Jul 19 2012 12:27 pm
Subject: AMX Troubleshooting Help Needed

To anyone who might be able to help,

Please bear with me for this long explanation.

Over the past two years we have deployed NI-700/NXD-700(V)i (the 'V' was
removed in recent iterations of the panel) across our campus, totaling
close to 100 rooms. Most of them have been put on our network and
integrated with RMS.

The systems are relatively simple � one Panasonic projector, one Extron
switcher, 3-5 sources, and an occasional Rane DSP with microphone
inputs. They all have the same equipment, so consistency is not an issue.

Unfortunately, this summer has seen many of those room go offline
because either the master or panel became unresponsive. The rash of
incidents has got our help desk spooked � it is obviously a big problem
if we need to cycle the power in two rooms per day.

I have only scratched the surface in troubleshooting the issue � as you
might imagine, this is an issue that is difficult to replicate in a lab
environment. Of course I called AMX and they could not help me over the
phone.

An issue we have all but ruled out is power fluctuations. Some of our
buildings have been known for power surges, and I suspected there might
be some intentional power outages because of summer usage. Every attempt
to try to replicate the issue using spikes and outages has failed,
however; the system always comes back online.

The next troubleshooting step I plan to take is to emulate a "hacker
attack" on a system in my office. Our systems are actually on an open
network, but I have them locked down for security purposes. I'm not sure
if we have an exposed port � maybe 1319 is being targeted? � or if there
is another issue that can be exploited by hackers.

Finally, there is the issue of code. The problem with this route is that
I have created a code core that automates almost everything � I went
about it this way because we will have 200+ rooms online by the end of
this project and I wanted a way to deploy code on a room-to-room basis
without needing to re-write code each time. We have not had widespread
issues like this in the past, however. I am unsure why they would have
started cropping up now.]

At any rate... if you are still reading this, and you think you might be
able to help, I would greatly appreciate anything you could give. Even
if it's bouncing questions back and forth, every little bit will help.

I will gladly answer any questions about code or setup.

Thanks for reading!

-Alex

  alex_miglio.vcf
< 1K Download

 
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Donald E Newman  
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 More options Jul 19 2012, 1:56 pm
From: Donald E Newman <denew...@uga.edu>
Date: Thu, 19 Jul 2012 17:56:42 +0000
Local: Thurs, Jul 19 2012 1:56 pm
Subject: RE: [av-1] AMX Troubleshooting Help Needed
Alessandro,

We provide campus wide support to a similar number of Netlinx processors here an UGA.  Last summer we ran into a similar rash of systems locking up.  In our case it was isolated to several building were there appeared to be other problems with the building Ethernet infrastructure.  We've also occasionally seen lockups after electrical storms or other electrical disruptions (in the words of local building staff, "oh ya, they were doing some electrical work in the building").

We have updated firmware on all affected systems and also followed the other recommendations in the e-mail copied below.  

Since then we've had few if any problems with lockup requiring reset.

________________
Donald Newman
CTL - Classroom Support
University of Georgia
706-542-3456

From: XXXXXXXXXX XXXXXXXXXX
Sent: Friday, August 05, 2011 3:13 PM
To: Donald E Newman
Subject: Netlinx masters and the network

Donald,

The number one thing you can do to improve uptime of netlinx masters on a corporate or campus network is to have the IT department add all AMX masters and panels to an exceptions list so they are not hit during network security scans.  

  Here is a tech note going over a known cause of network issues:

http://www.amx.com/techsupport/techNote.asp?id=541

Command to set the masters for the most robust network connectivity:

Set Ethernet mode 10 half (sets master to a speed of 10 and half duplex. You could also go up to 100 full.  The main item here is to get out of AUTO mode)
Set udp bc rate 0 (this disables broadcasts messages which allow panels to find masters when the panel is set in auto mode)
Zeroconf disable (disables the master from being found using zeroconfig)

And if you are doing master to master systems then it is highly recommended you follow the recommendations of tech note #919

http://www.amx.com/techsupport/techNote.asp?id=919

And one more document to hopefully alleviate any concerns of your IT department about putting AMX gear on the exceptions list is:

http://amx.com/includes/pressrelease-file.asp?release=2010.10.12

XXXXXXXXXXXXX
XXXXXXXXXXXXX


 
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Douglas Richardson  
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 More options Jul 19 2012, 2:03 pm
From: Douglas Richardson <doug.richard...@queensu.ca>
Date: Thu, 19 Jul 2012 18:03:40 +0000
Local: Thurs, Jul 19 2012 2:03 pm
Subject: RE: [av-1] AMX Troubleshooting Help Needed
Sounds like denial of service hits

_______________________________
Doug Richardson, Systems Integrator
Queen's University, ITS/Classroom Presentations
Mackintosh-Corry Hall Suite D123
Kingston, Ontario Canada K7L-3N6
613 533 6571   doug.richard...@queensu.ca


 
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Doug Smith  
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 More options Jul 19 2012, 2:31 pm
From: Doug Smith <dosm...@ilstu.edu>
Date: Thu, 19 Jul 2012 13:31:55 -0500
Local: Thurs, Jul 19 2012 2:31 pm
Subject: Re: [av-1] AMX Troubleshooting Help Needed
This sounds very familiar to us.  We solved the problem by using telnet
to get into the devices and disabled zeroconfig.

The command is: zeroconf disable

On 7/19/2012 11:27 AM, Alessandro Miglio wrote:

--
Douglas A. Smith, Ph.D., CTS-D
Director, Classroom Support
Illinois State University
Campus Box 6380
Normal, IL  61790-6380
     ph 309-438-3685
     fax 309-438-3623

 
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Bell, John W  
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 More options Jul 19 2012, 2:39 pm
From: "Bell, John W" <john.w.b...@intel.com>
Date: Thu, 19 Jul 2012 18:39:26 +0000
Local: Thurs, Jul 19 2012 2:39 pm
Subject: RE: [av-1] AMX Troubleshooting Help Needed
Check the NiCad batteries embedded within the touch panels themselves.


 
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Karen Blocker, Lake Forest College  
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 More options Jul 19 2012, 3:23 pm
From: "Karen Blocker, Lake Forest College" <blocker%lakeforest....@gtempaccount.com>
Date: Thu, 19 Jul 2012 12:23:11 -0700 (PDT)
Local: Thurs, Jul 19 2012 3:23 pm
Subject: Re: AMX Troubleshooting Help Needed

Alessandro

LFC has the MVP-7500 panels and in the past if they have gone off line it
has been a couple of different issues.

1. panel looses electrical (because of a power surge) and the internal
batter didn't get charge

2. firmware needed updating

3. the little phoenix connector wires, going into the back of the Netlink
Controller came loose

4. had to upgrade our wireless access points

If you can get into the Panel setup and under tools, check panel logs,
seeing the connection log may help you get a idea of when the
disconnections are occurring.

Good Luck,

Karen Blocker

Academic Technology Specialist

Lake Forest College <http://www.lakeforest.edu/>


 
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Jim Pierret  
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 More options Jul 19 2012, 10:41 pm
From: Jim Pierret <james.a.pier...@gmail.com>
Date: Thu, 19 Jul 2012 21:41:04 -0500
Local: Thurs, Jul 19 2012 10:41 pm
Subject: Re: [av-1] AMX Troubleshooting Help Needed

I've experienced this problem in the past. We solved the problem (as some
one else suggested) by setting both touch screens and controllers to Ethernet
mode 10 half.  I would run this by your network folks. I been told by mine
that our newer network  switches might no longer handle 10 half well. Will
probably switch our systems to 100 half.

Jim


 
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Alessandro Miglio  
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 More options Jul 30 2012, 6:19 pm
From: Alessandro Miglio <alex.mig...@media.berkeley.edu>
Date: Mon, 30 Jul 2012 15:19:59 -0700 (PDT)
Local: Mon, Jul 30 2012 6:19 pm
Subject: Re: [av-1] AMX Troubleshooting Help Needed

Thanks very much for your replies, everyone. We are still trying to figure
out what is going on, but we feel that we are on the right trail with a
huge assist from this forum!


 
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