Real Media and M-Bone feeds

Wed Oct 6 03:08:31 UTC 1999

> >Easily.  It is called cacheing.  Multicasting provides exactly the
> >same bandwidth savings as cacheing with cache retention time set to zero.
> 
> With the constraint that if you want to provide exactly the same
> bandwidth savings, you have to have a cache at every hop.  Without a
> cache at every hop, there still can be significant savings, but not
> quite equal to the bandwidth savings of multicast at every hop.
> (Though, admittedly, multicast capable routers aren't available at every
> hop either).

Except that you probably don't care about every hop either (who cares if
the 100Mbps to my access server with 4 T1's on it is partially wasted?).

-Phil