[160711] in North American Network Operators' Group
Re: The 100 Gbit/s problem in your network
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Mon Feb 11 18:53:16 2013
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <51194261.5080702@sprunk.org>
Date: Mon, 11 Feb 2013 18:52:58 -0500
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Feb 11, 2013, at 14:11 , Stephen Sprunk <stephen@sprunk.org> wrote:
> 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!
>>>=20
>>> Just another reason to make the transit only networks even more
>>> irrelevant.
>>=20
>> 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.
>=20
> 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.
One of us has a different dictionary than everyone else.
Assume I have 10 million movies in my library, and 10 million active =
users. Further assume there are 10 movies being watched by 100K users =
each, and 9,999,990 movies which are being watched by 1 user each.
Which has more total demand, the 10 popular movies or the long tail?
This doesn't mean Netflix or Hulu or iTunes or whatever has the =
aforementioned demand curve. But it does mean my "definition" & yours =
do not match.
Either way, I challenge you to prove the long tail on one of the serious =
streaming services is a "tiny fraction" of total demand.
--=20
TTFN,
patrick
