Re: [Micronet] effect of music sharing on shared 10Mb network

I was off by a factor of 10 in my own head (although I wrote down the
correct figure), so I should revise what I wrote and say that a person
streaming audio at 128Kbps is not going to cause a problem on a
properly-functioning network. If they are trying to share the network
with 200 of their closest friends and colleagues who are also trying to
use a crowded network, then they're using more than their fair share. But
that's not for CNS to adjudicate.

On Feb 24 at 13:04, "John D. MacDonald" wrote:

> Well, thanks to the delay in Micronet (and/or my mail client checking
> once every 10 minutes) I did actually write my post before I got Mr.
> Hunter's, so my apologies for any toe stepping or repetition. But even
> talking about 5-6 Mbps throughput, each stream is still less than 1/40th
> of the available bandwidth...I'm not saying this isn't or can't be an
> issue/problem, especially if Glen is talking about a shared (hub)
> situation. Just trying to give some figures for perspective...and yes,
> YMMV indeed.
>
> John
>
>
>
> Jay Bryon wrote:
> >Just one correction, it's not a 10Mbps pipe, in practice it's more
> >like 5-6Mbps.
> >So in deference to Mr. Hunter, who actually is the authority on
> >traffic flow around here, it's a problem. How great of one?
> >Well, what else do you want to use the network for?
> >YMMV.
> >
> >-J
> >
> >John D. MacDonald wrote:
> >>I certainly won't speak of any larger policy issues about mp3 storage
> >>on campus owned machines, but to the original question...
> >>
> >>some simple math...128kbps streams with say 10% packet overhead gives
> >>about 140kbps, which goes about 73 times into a 10mb pipe. Now, the
> >>scale and scope of the effect will depend on both the number of users
> >>streaming, and the network infrastructure itself. If you've got 48
> >>people on a 10mb hub (single collision domain), yeah, you've got
> >>problems, but the same 48 users on 48 10mb switch ports...almost no
> >>problem.
> >>
> >>And as for the legality or policy issues (RIAA and such) of this
> >>sharing, there is no issue. Apple negotiated with the recording
> >>companies and RIAA to ensure that the "sharing" feature of iTunes was
> >>'kosher' with all. If anyone remembers, the first version allowed
> >>you to share (stream, not distribute files) to your closest 6.49
> >>billion friends over the internet. The record companies exerted a
> >>little pressure, and the iTunes sharing was changed to allow only
> >>local network sharing. So, you can be pretty sure that the RIAA
> >>won't be knocking down your door for using iTunes sharing, whether at
> >>home, or on campus.
> >>
> >>That said, the individual user that downloads 10,000 mp3s from kazaa,
> >>emule, whatever, onto a campus machine and shares them exclusively
> >>through iTunes isn't immune to RIAA (or UC) smackdown, since the
> >>files are still illegal.

[snip]

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Received on Fri Feb 24 13:22:33 2006