[160688] in North American Network Operators' Group
Re: The 100 Gbit/s problem in your network
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Mon Feb 11 14:12:32 2013
Date: Mon, 11 Feb 2013 13:11:29 -0600
From: Stephen Sprunk <stephen@sprunk.org>
To: nanog@nanog.org
In-Reply-To: <51193796.3030604@amplex.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On 11-Feb-13 12:25, Mark Radabaugh wrote:
> On 2/11/13 9:32 AM, ML wrote:
>> Any eyeball network that wants to support multicast should peer with
>> the content players(s) that support it. Simple!
>>
>> Just another reason to make the transit only networks even more
>> irrelevant.
>
> The big issue is that the customers don't want to watch simulcast
> content. The odds of having two customers in a reasonably sized
> multicast domain watching the same netflix movie at exactly the same
> time frame in the movie is slim. Customers want to watch on time
> frames of their own choosing. I don't see multicast helping at all
> in dealing with the situation.
Multicast _is_ useful for filling the millions of DVRs out there with
broadcast programs and for live events (eg. sports). A smart VOD system
would have my DVR download the entire program from a local cache--and
then play it locally as with anything else I watch. Those caches could
be populated by multicast as well, at least for popular content. The
long tail would still require some level of unicast distribution, but
that is _by definition_ a tiny fraction of total demand.
S
--=20
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking
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