[iccrg] Re: [CCWG] Re: [tsvwg] [Call for partici pation] IETF 126 Hackathon on Testing Congestion Control and Qu eue Management Mechanisms

Robert McMahon <[email protected]> Sat, 4 Jul 2026 14:33:55 -0700
Newsgroups gmane.ietf.irtf.iccrg,gmane.ietf.tsvwg
Message-ID <CAEBrVk6M5twmhy_1mfTLT5z2dBzmfAF-kVYX11UqVot9tg7KOQ@mail.gmail.com>
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I'd suggest adding Wi-Fi to the test matrix, with 802.11 MAC behavior as an
independent variable. Aggregation, retries, and EDCA queuing interact with
transport CC and AQM in ways wired tests won't expose.

Over-the-air testing (e.g. the meeting APs) is useful but hard to repeat.
For controlled runs, here's a writeup on driving 802.11 MAC conditions with
a conducted rig: https://www.umbernetworks.com/umber-devel-test-rig.html

Bob

On Sat, Jul 4, 2026 at 2:02=E2=80=AFPM Livingood, Jason <Jason_Livingood=3D
[email protected]> wrote:

> If you are looking for some fun extensions to this - perhaps consider
> testing these AQMs on the APs that the IETF meeting network uses, as I
> would love to see AQM in those APs.
>
> Also, perhaps test Meetecho using L4S via libwebrtc in Chromium. The
> ultimate test for me is how much delay is there when someone plays a vide=
o
> in Meetecho in a meeting and it comes through so choppy and delayed - see=
ms
> like a prime candidate for AQM and L4S to improve.
>
> JL
>
> *From: *Mohit P. Tahiliani <[email protected]>
> *Date: *Saturday, July 4, 2026 at 11:50
> *To: *[email protected] <[email protected]>; [email protected] <
> [email protected]>; [email protected] <[email protected]>; [email protected] <
> [email protected]>
> *Subject: *[tsvwg] [Call for participation] IETF 126 Hackathon on Testing
> Congestion Control and Queue Management Mechanisms
>
> Hi all,
>
> We are planning to work on "Testing Congestion Control and Queue
> Management Mechanisms" at the IETF 126 Hackathon in Vienna on 18-19 July
> 2026.
>
> Our primary goal is to test congestion control and queue management
> proposals currently being discussed in the CCWG, TSVWG, ICCRG, and relate=
d
> groups.
>
> We are looking for participants from academia, industry, and the broader
> Internet community who are interested in congestion control and queue
> management testing.
>
> Potential tasks include, but are not be limited to:
> * Performance evaluation of FQ-CoDel and FQ-PIE in mobile hotspot scenari=
os
> * Testing the integration of picoquic with ns-3
> * Developing a NeST-based congestion control evaluation suite compliant
> with RFC 9743
> * Developing an example demonstrating the implementation of a rate-limite=
d
> sender in ns-3
>
> More details are available here:
>
> https://wiki.ietf.org/en/meeting/126/hackathon#testing-congestion-control=
-and-queue-management-mechanisms
> <https://urldefense.com/v3/__https://wiki.ietf.org/en/meeting/126/hackath=
on*testing-congestion-control-and-queue-management-mechanisms__;Iw!!CQl3mcH=
X2A!AXw-0N4r8hMgKaXVMwdvERG1W3yISAtMcYThMomTidFIOznUJADHXXuK6t40m_ckLceEUkU=
Voq-NzIOs34L8F71-kfNsmBb2GISMFw$>
>
> If you are interested in joining us for this hackathon, please let us kno=
w.
>
> Thanks and Regards,
> Mohit P. Tahiliani
> --
> CCWG mailing list -- [email protected]
> To unsubscribe send an email to [email protected]
>

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<div dir=3D"ltr"><div dir=3D"ltr"><p class=3D"gmail-font-claude-response-bo=
dy gmail-break-words gmail-whitespace-normal">I&#39;d suggest adding Wi-Fi =
to the test matrix, with 802.11 MAC behavior as an independent variable. Ag=
gregation, retries, and EDCA queuing interact with transport CC and AQM in =
ways wired tests won&#39;t expose.</p>
<p class=3D"gmail-font-claude-response-body gmail-break-words gmail-whitesp=
ace-normal">Over-the-air testing (e.g. the meeting APs) is useful but hard =
to repeat. For controlled runs, here&#39;s a writeup on driving 802.11 MAC =
conditions with a conducted rig: <a class=3D"gmail-underline gmail-underlin=
e gmail-underline-offset-2 gmail-decoration-1 gmail-decoration-current/40 g=
mail-hover:decoration-current gmail-focus:decoration-current" href=3D"https=
://www.umbernetworks.com/umber-devel-test-rig.html">https://www.umbernetwor=
ks.com/umber-devel-test-rig.html</a></p>
<p class=3D"gmail-font-claude-response-body gmail-break-words gmail-whitesp=
ace-normal">Bob</p></div><br><div class=3D"gmail_quote gmail_quote_containe=
r"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, Jul 4, 2026 at 2:02=E2=80=
=AFPM Livingood, Jason &lt;Jason_Livingood=3D<a href=3D"mailto:40comcast.co=
[email protected]">[email protected]</a>&gt; wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
:1px solid rgb(204,204,204);padding-left:1ex">



<div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
If you are looking for some fun extensions to this - perhaps consider testi=
ng these AQMs on the APs that the IETF meeting network uses, as I would lov=
e to see AQM in those APs.=C2=A0</div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
Also, perhaps test Meetecho using L4S via libwebrtc in Chromium. The ultima=
te test for me is how much delay is there when someone plays a video in Mee=
techo in a meeting and it comes through so choppy and delayed - seems like =
a prime candidate for AQM and L4S
 to improve.=C2=A0</div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
JL</div>
<div style=3D"direction:ltr;font-family:Aptos,Arial,Helvetica,sans-serif;fo=
nt-size:14pt;color:rgb(0,0,0)">
<br>
</div>
<div id=3D"m_4634719523755951919mail-editor-reference-message-container">
<div style=3D"direction:ltr">
</div>
<div style=3D"padding:3pt 0in 0in;border-width:1pt medium medium;border-sty=
le:solid none none;border-color:rgb(181,196,223) currentcolor currentcolor"=
>
<div style=3D"text-align:left;font-family:Aptos;font-size:12pt;color:black"=
>
<b>From: </b>Mohit P. Tahiliani &lt;tahiliani=3D<a href=3D"mailto:40nitk.ed=
[email protected]" target=3D"_blank">[email protected]</a>&gt;=
<br>
<b>Date: </b>Saturday, July 4, 2026 at 11:50<br>
<b>To: </b><a href=3D"mailto:[email protected]" target=3D"_blank">hackatho=
[email protected]</a> &lt;<a href=3D"mailto:[email protected]" target=3D"_blank">=
[email protected]</a>&gt;; <a href=3D"mailto:[email protected]" target=3D"_bla=
nk">[email protected]</a> &lt;<a href=3D"mailto:[email protected]" target=3D"_blank=
">[email protected]</a>&gt;; <a href=3D"mailto:[email protected]" target=3D"_blank=
">[email protected]</a> &lt;<a href=3D"mailto:[email protected]" target=3D"_blank=
">[email protected]</a>&gt;; <a href=3D"mailto:[email protected]" target=3D"_blan=
k">[email protected]</a> &lt;<a href=3D"mailto:[email protected]" target=3D"_blan=
k">[email protected]</a>&gt;<br>
<b>Subject: </b>[tsvwg] [Call for participation] IETF 126 Hackathon on Test=
ing Congestion Control and Queue Management Mechanisms<br>
<br>
</div>
</div>
<div style=3D"direction:ltr">
Hi all,<br>
<br>
We are planning to work on &quot;Testing Congestion Control and Queue Manag=
ement Mechanisms&quot; at the IETF 126 Hackathon in Vienna on 18-19 July 20=
26.<br>
<br>
Our primary goal is to test congestion control and queue management proposa=
ls currently being discussed in the CCWG, TSVWG, ICCRG, and related groups.=
<br>
<br>
We are looking for participants from academia, industry, and the broader In=
ternet community who are interested in congestion control and queue managem=
ent testing.<br>
<br>
Potential tasks include, but are not be limited to:<br>
* Performance evaluation of FQ-CoDel and FQ-PIE in mobile hotspot scenarios=
<br>
* Testing the integration of picoquic with ns-3<br>
* Developing a NeST-based congestion control evaluation suite compliant wit=
h RFC 9743<br>
* Developing an example demonstrating the implementation of a rate-limited =
sender in ns-3<br>
<br>
More details are available here:<br>
<a href=3D"https://urldefense.com/v3/__https://wiki.ietf.org/en/meeting/126=
/hackathon*testing-congestion-control-and-queue-management-mechanisms__;Iw!=
!CQl3mcHX2A!AXw-0N4r8hMgKaXVMwdvERG1W3yISAtMcYThMomTidFIOznUJADHXXuK6t40m_c=
kLceEUkUVoq-NzIOs34L8F71-kfNsmBb2GISMFw$" target=3D"_blank">https://wiki.ie=
tf.org/en/meeting/126/hackathon#testing-congestion-control-and-queue-manage=
ment-mechanisms</a><br>
<br>
If you are interested in joining us for this hackathon, please let us know.=
<br>
<br>
Thanks and Regards,<br>
Mohit P. Tahiliani</div>
</div>
</div>

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</blockquote></div></div>

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