I think making WiFi tech accessible to students is a very good thing. That students make mistakes is also a good thing. I understand the frustration though.

I've recently rolled out a raspberry pi 4 crib sheet on how to build an L4S capable device. It's a fun project and comes in at around $100 U.S.  Throw in some switches, USB WiFi cards, ethernet for control, a GPS hat for pulse per second, use iperf 2 and pyflows. All for less than $500. 

The expensive part is placing the RF under control but that's doable too - though likely in the few thousands of dollars and maybe just a bit more. The math is already done thanks to those studying molecular evolution.

Bob

On Wed, Jul 19, 2023 at 5:30 PM Dave Taht via Make-wifi-fast <make-wifi-fast@lists.bufferbloat.net> wrote:
It is hard to contain my disappointment that a modern work on wifi,
that even mentions bufferbloat, could have missed our work on fixing
wifi (such as "ending the anomaly", now the default APIs in the linux
kernel), and make claims for the emulator that are so completely
wrong, and further claim that the behaviors matched a real world AP.

re: https://mdpi-res.com/d_attachment/futureinternet/futureinternet-15-00246/article_deploy/futureinternet-15-00246.pdf?version=1689771540

Can I suggest strongly to the authors that they try to understand rate
vs range vs buffering, the intersection of the half duplex txop
infrastructure with multiple stations, the side effects of
aggregation, and other scheduling difficulties mininet does not come
even close to handling?

20 packet buffers?? A more typical number is much greater.
Test through walls or at distance?

Here are 4 resources that might help deepen your understanding.

https://www.youtube.com/watch?v=Rb-UnHDw02o&t=1532s (10 minutes here,
but do the whole thing)
https://bufferbloat-and-beyond.net/
https://www.cs.kau.se/tohojo/airtime-fairness/
https://blog.cerowrt.org/post/minstrel/

--
Podcast: https://www.linkedin.com/feed/update/urn:li:activity:7058793910227111937/
Dave Täht CSO, LibreQos
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