[arm-allstar] WIFI Issue

Thu Aug 17 08:02:48 EST 2017

No. Dump1090 runs on the RPi and feeds Planeplotter (Windows). The RPi is
usually set up in a single application use. My RPi has been running for 3
years now I'd guess. My Rpi is also connected via cable so I never paid that
much attention to the Wi-Fi sleeping issue other than note that it is
possible. Not knowing how Allstar operates I just figured this may be useful
information. Instead it appears to be useless information for Allstar, which
is a good thing.

When I get an Allstar node up and running I'll have Ethernet cable running
to it. I am lucky that I can get to the area of interests with cable. A
different would be a different story.

Best regards,
Fred N7FMH

-----Original Message-----
From: David McGough [mailto:kb4fxc at inttek.net] 
Sent: Wednesday, August 16, 2017 11:19 PM
To: "fmhillhouse via arm-allstar"
Cc: fmhillhouse
Subject: Re: [arm-allstar] WIFI Issue

Hi Fred,

Was the PlanePlotter related software is running on top of the hamvoip
V1.5 distro?? 

I've never had a RPi3 WiFi adapter go to sleep using the hamvoip distro,
even if the Asterisk/AllStar software isn't running.

73, David KB4FXC

On Wed, 16 Aug 2017, "fmhillhouse via arm-allstar" wrote:

> 

I'll just throw this out there.Â On the PlanePlotter group, when the message
rate drops to zero over night, the WiFi has been known to shut off.The fix
was to add a ping to keep alive. I think the answer was to set up a cron (?)
event.
Fred N7FMHÂ 

Sent via the Samsung GALAXY SÂ® 5, an AT&T 4G LTE smartphone

-------- Original message --------
From: Doug Crompton via arm-allstar <arm-allstar at hamvoip.org>
Date: 8/16/17  20:05  (GMT-05:00)
To: ARM Allstar <arm-allstar at hamvoip.org>
Cc: Doug Crompton <wa3dsp at gmail.com>
Subject: Re: [arm-allstar] WIFI Issue 

Like Dave I have not seen this issue. I have several nodes running on wifi
without an issue and long uptimes. Also I might point out we have numerous
portable nodes online that are constantly up and down using wifi and it just
works.

I know there have been problems with the Allstar registration server and the
only way to solve it is to go down for 5 or 10 minutes and come back up. I
think what we need to determine is it an Allstar issue or a WIFI issue. From
what you are saying the WIFI connects and is visible at the router. This
would lead me to believe that Allstar is not registering. When this happens
can you ssh into the Pi? Or if not connect a monitor and keyboard and see if
it registered and downloaded the nodelist. This would be very helpful in
troubleshooting.

*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Wed, Aug 16, 2017 at 5:52 PM, "David McGough via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

>
>
> Hi Tom,
>
> I'm interested to hear about your sporadic WiFi issues, I'm not sure 
> what the cause could be.
>
> I run *ALL* my RPi3 nodes, whether test/development or 
> live/production, via WiFi. I don't have any RPi3 wired by Ethernet 
> cable, anywhere. And, I never recall any network hiccups that weren't 
> from my own causing...I do run static IP addresses everywhere.
>
> ...For some examples, on my development AP (a ubnt bullet M2), I've 
> got an uptime of 173 days. And, I just checked a in-cabinet LocoM2 AP 
> at a production site and have an uptime of 301 days!Â  My production 
> RPi3 boards only currently have an uptime of 11 days, since that was 
> when I pushed out my most recent beta-test code to them and rebooted. 
> I've got a couple developement RPi3's, which include NFS mounted dev 
> filesystems that have been up 60+ days.
>
> I've found the key to stability is good power to the RPi3's and high 
> quality (which doesn't mean expensive!) Access Points.
>
> For in-cabinet or close range WiFi use, make sure to turn the RPi3 and 
> AP TX power WAY down...I usually set to about 0dBm (iwconfig wlan0 
> txpower 0 ...or maybe 10)....Even with the power turned down my signal 
> strength is in the -40's.
>
>
> 73, David KB4FXC
>
>
>
>
> On Wed, 16 Aug 2017, "Tom Hayward via arm-allstar" wrote:
>
> > I've often had RPis stop responding over wifi. I wrote a script that 
> > I run on the Pi to resolve the problem (rather primitively):
> >
> > /home/pi/check_network_and_reboot:
> > #!/bin/bash
> > ROUTER_IP=192.168.1.1
> > ( ! /bin/ping -c1 $ROUTER_IP >/dev/null 2>&1 ) && sudo 
> > /sbin/shutdown -r now >/dev/null 2>&1
> >
> >
> > Then I have a crontab like this:
> > */10 * * * * /home/pi/check_network_and_reboot
> >
> > The script reboots the Pi when the networking stops working. In my 
> > experience a reboot is all that has been necessary to get the wifi 
> > working again.
> >
> > Tom KD7LXL
> >
> > On Wed, Aug 16, 2017 at 1:47 PM, "Dave P via arm-allstar"
> > <arm-allstar at hamvoip.org> wrote:
> > > Greetings Doug,
> > >
> > > Jim NH6HI and I are troubleshooting an issue with another ham's 
> > > RPI3 system.Â  WA8WNK Nodes 45756/57.
> > >
> > > He shut down his system (connected with WiFi) before he left on
> Vacation.
> > > With the storms in San Antonio, Texas it was a wise move.Â  Upon
> returning
> > > home and firing up his equipment, he sees all the devices are
> recognized on
> > > his wireless router to include the RPI3 WIFI connection.
> > >
> > > He notices his node is not being recognized on the allstarlink page.
> > > Although, his CISCO Wifi router shows the RPI3 is on the DHCP list
> table.
> > > We are unable to putty to the WIFI address of the RPI3.Â  I had 
> > > owner
> Lee
> > > connect the RPI3 via ethernet and I was able to SSH in with no
> problem.Â  I
> > > did notice when I tried to perform an update option 1 that I go an
> error
> > > message that the update failed.
> > >
> > > At this point, I am having Lee get a new MicroSD card and lets 
> > > rebuild
> the
> > > nodes again.Â  Jim mentioned it could be a power spike may have
> corrupted
> > > the MicroSD card or some anomaly.
> > >
> > > (Additionally on the same subject of WiFi problems, we have a node
> 45655 on
> > > Maui that went through a power outage while Jim NH6HI was on the 
> > > phone
> with
> > > the owner. When the power came back, the node wouldn't reconnect 
> > > via
> Wifi.
> > > He ran the wifi setup again and upon rebooting,Â  no wifi 
> > > connection
> even
> > > though it was able to complete the setup successfully. The setup 
> > > was
> tried
> > > several times to no avail.Â  For the interm it is connected with 
> > > an
> ethernet
> > > cable. We will be rebuilding the node on a new microSd card in the 
> > > near future to make sure this isn't a hardware problem.Â  It looks 
> > > like the
> Pi
> > > needs battery backup as this problem has not reared it's head on
> battery
> > > powered systems.)
> > >
> > > Just wanted to pass information if you ever encountered this issue.
> > >
> > > 73 and aloha
> > >
> > > Dave - AH6OD
> > > _______________________________________________
> > >
> > > arm-allstar mailing list
> > > arm-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > >
> > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> > _______________________________________________
> >
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> >
>
> _______________________________________________
>
> arm-allstar mailing list
> arm-allstar at hamvoip.org
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>
> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>
>
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