Multicast Traffic on Backbones

Sun Jun 10 20:46:57 UTC 2001

> HOWEVER, most of the 24x7 media sites (CNN, etc.) are doing on-demand
> video, rather than streaming a constant feed.

1) rights

2) unicast doesn't scale to the sort of audiences of radio/tv 
   broadcasts and if you try it becomes financially unviable too
   (even with people attempting to fake multicast, e.g. Akamai)

One way to manage both is to use the VCR model

> On the one
> hand, content providers aren't offering 24x7 multicast feeds because there
> isn't enough multicast access at the end-points.

We offer it regardless but there's not many can use it

> Apart from 24x7 broadcast there isn't an obvious killer app.

And there's reasonable argument over making the intenet = tv

brandon