[e2e] Why do we need congestion control?

[Detlef Bosau]

Am 02.04.2013 13:20, schrieb shun cai:
> Hi£¬
>
> I found two papers which state that with ideal fountain code,there is
> generally no congestion collapse.Efficiency remains higher than 90%
> for most network topologiesas long as maximum source rates are less
> than link capacity by one or two orders of magnitude. Moreover, a
> simple fair drop policy enforcing fair sharing at flow level is
> sufficient to guarantee 100% efficiency in all cases. I refer to
> several papers on the congestion problem when fountain code is used.
> [1] [2]
>
Don't we compare peaches and oranges here?

When we talk about TCP, we talk about a reliable protocol. Are digital
fountain codes reliable??

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