[e2e] Can feedback be generated more fast in ECN?

[Francesco Potorti`]

   Is the edge-of-the-net case really that likely? Modern, New-Reno
   vintage TCPs seem to be fairly good at converging on close to fair
   shares, even on wet-string links like cellphones.

But a common case of overfull buffer queues happens on ISP dialup access
points, which is just at  the edge, because of excessive receive windows
on the client side.  In that  case, RED would help, and notification via
ECN should be not much slower than SQ, and cheaper.  Am I wrong?

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