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

[Zhang Miao]

Hi, Tianb Kuang

>>Also, Source Quench does not introduce more traffic than ECN, if the marked
>packet
>>is not forwarded.
>
>
>What's this argument???

I mean if only Source Quench is sent(the marked packet is not forwarded),
the total traffic triggered by "congestion" event is equal to the traffic 
in ECN. While in this scheme, ECN can transfer one more packet to the TCP receiver.

>
>In short, I guess ECN is trying to be consistent with the traditional
>Internet model -- keep the core simple and let the edge do the smart work.
>

I agree. This is a general rule.