Date: Thu, 9 Nov 2000 13:25:15 -0800 From: Tim Pozar <pozar@lns.com> To: torstenb@vmunix.org Cc: Thomas Runge <runge@rostock.zgdv.de>, uzs106@ibm.rhrz.uni-bonn.de, freebsd-multimedia@FreeBSD.ORG Subject: Re: RTP vs. HTTP as streaming protocol, SMIL Message-ID: <20001109132515.A95823@lns.com> In-Reply-To: <20001109082322.DFDC07AEEB@defiant.vmunix.org>; from torstenb@defiant.vmunix.org on Thu, Nov 09, 2000 at 09:23:21AM %2B0100 References: <Pine.BSF.4.21.0011090849440.281-100000@penguin.egd.igd.fhg.de> <20001109082322.DFDC07AEEB@defiant.vmunix.org>
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On Thu, Nov 09, 2000 at 09:23:21AM +0100, Torsten Blum wrote:
> Thomas Runge wrote:
>
> > > I work for a major ISP in Germany and I can count the number of customers
> > > asking for multicast uplink on one hand. Heck, even the number of multicast
> > > enabled ISPs could probably be counted with one hand.
> >
> > I think, thats one of the reasons, why nobody uses mcast. Just because
> > they can't *rely*, that their customers have it.
>
> Yes, but
>
> > And ISP's are guilty >:-)
>
> that's not the problem. I know a lot of people working for small and
> medium sized german ISPs and they all told me that no customer asks for
> it. As a result, they don't have it - because it costs manpower to understand
> multicast, get experience with it and offer it as a service.
>
> Many of the companies (including small/medium sized ISPs) who have multicast
> connectivity have it because the techies at those ISPs knew about it and
> want to play with it ;-(
Chicken and the egg. ISPs need to deploy it. Customers will then
ask for it. They don't feel your pain.
As for the amount of time it takes to learn and maintain an
MCAST/MBONE link... I have been connected since '96 and it is pretty
easy to set up (mrouted or other methods) and maintain. Admititly
there is a reliability problem as the MBONE is a bit lossy and it
does go up and down. Players like Realplayer can be set up to try
multicast and then fall back to unicast so outages are less of a
problem.
Tim
--
Snail: Tim Pozar / LNS / 1978 45th Ave / San Francisco CA 94116 / USA
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