Re: The scale of streaming video on the Internet.

[david raistrick <drais () icantclick org>]

On Thu, 2 Dec 2010, Jack Bates wrote:

> Watch the game live multicast. Missed the game? Watch it on demand. As things 
> progress, we'll probably see more edge content delivery systems (like Akamai)

Have you ever actually been involved with really large scale multicast 
implementations?   I take it that's a no.

The -only- way that would work internet wide, and it defeats the purpose, 
is if your client side created a tunnel back to your multicast source 
network.  Which would mean you're carrying your multicast data over 
anycast.

If you, the multicast broadcaster, dont have extensive control of the 
-entire- end to end IP network, it will be significantly broken 
significant amounts of the time.


...david (former member of a team of engineers who built and maintained a 
220,000 seat multicast video network)


--
david raistrick        http://www.netmeister.org/news/learn2quote.html
drais () icantclick org             http://www.expita.com/nomime.html