Asymmetry of transatlantic traffic [Re: [e2e] congestion
DJamel H. Sadok
jamel at cin.ufpe.br
Sat Jun 9 06:35:59 PDT 2001
> If the ratio is coming back down now, this may be driven by
> applications such as Napster and Gnutella, which contribute more and
> more traffic (in absolute and relative terms), and which seem to
> exhibit more symmetric traffic patterns than Web access.
> > Capacities are generally completely symmetric. This is true
> > throughout the telecom world (except for newer technologies
> > at the edges, like DSL, cable modems, and satellite data), a
> > legacy of the voice telephony world. (Frame Relay offers
> > customers the option of asking for asymmetric PVCs, but this
> > is just how the capacity is sold, as the Frame links themselves
> > are symmetric.) In my Globecom '99 paper I used this as an
> > argument against QoS: Basically the reasoning was that with
> > far less effort than is going into developing and deploying
> > QoS, one could develop a transport infrastructure that would
> > take advantage of the asymmetries in traffic patterns, which
> > tend to persist for extended periods of time, and that this
> > would provide at least as much of a gain in performance.
> I find this argument quite convincing.
Could you be more specific on how one may take advantage of the assymetric
nature of traffic, any examples?
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