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Meshchat Usage Poll


We are considering how the future version of AREDN mesh network software might affect the use of the Meshchat application.

Please help us by responding to the Meshchat poll here.

Updated date: Tuesday, December 21, 2021 - 10:22


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...

Read More
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...
Read More
Updated date: Thursday, October 28, 2021 - 11:22

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Announcements


David Sarnoff Radio Club March 19 2019

Randy Smith, WU2S will give a presentation to the David Sarnoff Radio Club on Tuesday, March 19, 2019 at 7:30 pm. The club meets at the American Red Cross, 707 Alexander Rd Suite 101, Princeton, NJ 08540.
Randy will show that high-speed multimedia mesh networking is a 21st century solution for hams who provide communications support to emergency responders. This presentation will showcase recent advancements in the Amateur Radio Emergency Data Network (AREDN) project, how people are deploying it, and examples of applications and services provided.
 


QSO Today Interviews Andre K6AH


Eric Guth, 4Z1UG / WA6IGR writes "Andre Hansen, K6AH, and his team of open source developers have taken amateur radio mesh networking to a new level with AREDN, that allows commercial low cost WIFI routers and access points to be used to build out local and regional broadband networks in the amateur bands above 2 GHz. Andre and I discuss this technology and its possibilities for the amateur radio community in this QSO Today."

Listen to the QSO Today podcast here.

"QSO Today is a podcast about amateur radio also known as ham radio.  Every week, I interview a leader, a mover and shaker, in the amateur radio world.  Many of the technologies that we enjoy today including television and radio, cell phones, computers, and the Internet were born out of the amateur radio experience. Amateur radio was the frontier where hams conducted electronic experiments in order to make that wireless contact around the World."

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