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Report on Meshoween 2021 network test

Note - this report is written from a Southern California perspective. Depending on your location, as they say YMMV!

During the test the node count on the linked networks locally rose to around 1,090.  N2MH's N2MH-Hub saw 1428, most likely a record for an AREDN network.

Observations:

As we hoped, network storms never appeared from our West Coast point of view, and none have been reported to date.  Network traffic was not substantially higher than normal. Using KN6PLV's Mesh Monitor, messages per second were averaging about 600 before the test.  During the test it hovered closer to 700. Most of the increase in traffic was due to OLSR routing broadcasts, which each node has to handle.

As we expected, older devices struggled. Many wound up with a load significantly greater than 1 (which is a full load for a single-CPU device like these), indicating their CPUs were struggling to keep up with their pending processes.  Ssh'ing into a few of them and running top showed that with node counts around 1,000, loads of around 4-5 were seen.  

Things we didn't expect:

While the slower nodes struggled with displaying UI pages, they were usually still able to pass traffic.  But occasionally that older hardware bogged down so much that it couldn't.  Perhaps some effort should be made to prioritize traffic handling...

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Updated date: Sunday, October 31, 2021 - 15:17


Meshoween test results

We've wrapped up the Meshoween network abuse test  :-). 
If you participated and have any specific observations, please pass them along to me (orv.beach@gmail.com) and they'll be rolled them into the report on the test. 

tl;dr - it went pretty well - a few surprises.

Updated date: Saturday, October 30, 2021 - 20:55


Network Test Saturday, October 30th

As an AREDN network grows in size and/or complexity, it will eventually encounter a packet storm that would pretty much cripple its traffic-carrying capabilities until the storm fades out, which could be hours.  (The writers of the OLSR mobile routing protocol probably never envisioned it having to handle networks of the size amateurs are creating.)  This is significantly limiting the growth and performance of our networks.

Recently released nightly build 571 provides a substantial amount of resistance to these storms.  As a test of the network's robustness (or not) Saturday October 30th at 9 a.m. local we'll attempt to link as many AREDN networks together as possible.  

We did a 'test test' earlier in the week on the West Coast when the Southern California and Bay area networks were linked.  Node counts got up to a bit over 800 and few reports were received, so we're ready for Saturday!

Test preparation

Prior to Saturday's test, it's recommended that in order to protect your node(s) that you upgrade them to the latest nightly build (599 as of this writing).  This is especially important on nodes that pass data through (as opposed to being an end-point on a network).  

Also prior to Saturday, establish some baseline performance measurements on your network.  Suggestions are:

  • Quality of VOIP phone calls
  • iperf throughput...
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Updated date: Thursday, October 28, 2021 - 11:22


Meshoween is in a week!

Folks, next Saturday is Meshoween, where nasty packet storms strike terror into the most experienced ham network user :-)

Seriously, we'll be linking up big and small networks to see how our ham radio networks handle huge routing table broadcasts.

If you haven't yet updated your node(s) to nightly build 571 (or later), please seriously consider doing so.  It will  help your node fight off any scary packet storms!

Monitoring instructions will be promulgated a day or two prior to Meshoween.

Updated date: Saturday, October 23, 2021 - 17:31

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Announcements


Auxcomm Symposium in Southern New Jersey


On Saturday, February 16, 2019 the Medical Coordination Center (MCC) at Cooper University Hospital in Camden, NJ will be hosting an ARES/RACES/AUXCOMM Symposium for hams in the Southern New Jersey and the Eastern Pennsylvania areas. The MCC is beginning to use AREDN and would like to see the technology adopted more fully in their area. The event runs from 9:00 am to 3:00 pm. Presentations in the morning will be given by:

  • Bob Bruninga WB4APR - APRS
  • Joe Everhart N2CX - NVIS HF Field Antennas
  • Cory Sickles WA3UVV - Yaesu System Fusion
  • Randy Smith WU2S - AREDN high-speed multimedia mesh networking

The afternoon will consist of breakout sessions and demonstrations.  
 
Register at EventBrite to attend the Amateur Radio in Public Health & Medical Services (ESF #8) ...

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AREDN at Frostfest 2019

AREDN mesh networkers will be at the Frostfest 2019 in Richmond, VA on Saturday, February 2, 2019. The location is the Richmond Raceway Complex, 600 East Laburnum Avenue, Richmond, VA 23222-2253. This event is the ARRL Roanoke Division Convention, so there will be many League officials on site.

A group led by Damon Schaefer K9CQB will be on hand to demonstrate equipment and answer your questions. Just look for the large AREDN banner at their table. His team plans to populate the booth with several masts bristling with equipment and 2 large monitors, one running an AREDN slideshow and one with a local mesh network for live demonstrations. 

Stop by and say hello!

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