[e2e] Congestion control and avoidance - QoS?
michael at tk.uni-linz.ac.at
Mon Aug 20 03:12:18 PDT 2001
> The idea of implementing improved congestion control on an
> cooperative basis in a new protocol (replacing TCP as the
> basis for HTTP)
> sounds like a worthy goal.
... wouldn't SCTP be a good place to start?
After all, from what I've read about it, I figure that it may
indeed replace TCP in the long run.
I do not believe that there has been sufficient research to
qualify for such changes in TCP yet, but on the other hand,
I really don't think we should stick with AIMD for all ages.
Harrick Vin and Sergey Gorinsky, "Additive Increase Appears
There could indeed be better linear controls.
And there is more than just the stability issue - some argue
that AIMD satisfies Frank Kelly's desirable "proportional
fairness" property, which is not true according to Jean-Yves
Le Boudec in "The Fairness of Additive Increase and
Multiplicative Decrease", which can be found at
The SCTP folks could get rid of things which are only there
for backwards compatibility - such as the "ECN capable" flag.
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