[e2e] Congestion control as a hot topic in IETF

Roger Jørgensen rogerj at gmail.com
Mon Mar 4 12:14:35 PST 2013

hehe, I'm here to, lurking around trying to learn more of the deeper
and tricky details on why and how Internet work;)

With that question I was hoping for someone to teach the rest of us on
the topic, give us some more than just "Ouch. Because without it (as
we learned the hard way in the late 1980s) the Internet may collapse
and provide essentially no service."
That answer in itself might be news to lots of people on the subject,
but as said, I was hoping for some more :-)

among many other thing I follow bufferbloat, and CoDel is quite
interesting. I'm still running a very early version (fq_codel kernel)
in production because it gave me an interesting "rate-limiting" on
throughput when I tweaked some of the values.

--- Roger J ---

On Mon, Mar 4, 2013 at 7:41 PM, Scott Brim <scott.brim at gmail.com> wrote:
> On Mon, Mar 4, 2013 at 12:45 PM, Bob Braden <braden at isi.edu> wrote:
>> I hope that people of this E2E list are reading the current thread on the
>> IETF list about choosing a
>> new Transport Area director who is/is not an expert in congestion control.
>> Some of you have
>> been around long enough to recall the congestion collapse of the
>> (NSF-sponsored) Internet, before
>> Van J showed us how to not be stupid when he defined the basic TCP CC
>> mechanism.  They/we
>> invented the concept of "TCP Friendly" to try to head off a race to the
>> bottom while providing
>> an easy-to-understand criterion for acceptable CC.
>> It seems like an interesting question for research to determine whether
>> widespread adoption
>> of some future transport protocol with an ill-advised or inadequate CC
>> mechanism could still
>> cause congestion collapse of  large areas of the Internet,or only local
>> patches.  Or has
>> that been researched and I missed it?
>> Congestion control seems a bit like riding a unicycle -- even after you
>> learn how to do it,
>> you have to pay attention every moment or you are in danger of falling off.
>> Bob Braden
> Yup :-).  I was astounded at the "why is congestion control important"
> question.  I'm holding back, not being an expert.  I hope he gets 30+
> answers ... but so far it seems to have shut everyone up.
> When I was for-profit I was told "nobody ever made money on the
> control plane".  That could be the problem.
> Scott


Roger Jorgensen           | ROJO9-RIPE
rogerj at gmail.com          | - IPv6 is The Key!
http://www.jorgensen.no   | roger at jorgensen.no

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