All things related to multicast

[Greg Shepherd <>]

The scalling advantages of mcast only benefit the sender, not the
receiver. So in a confernce app, you only need to send one stream which
gets replicated to each reciever by the routers in the path. BUT, you will
be getting a stream from each sender.

So, a confernce with N members means you will still receive N-1 streams.

If this came N members had a unicast conference app, you would still
receive N-1 streams. So the the bandwidth savings are asymetrical,
trivializing the real benefit of mcast.

One-to-many is the mcast killer app - SSM is right mechanism to deliver
it.

Greg

On Thu, 13 May 2004, Bill Owens wrote:

> On Thu, May 13, 2004 at 02:23:17PM -0700, Greg Shepherd wrote:
> >
> > Conferencing has been repeatedly miss-identified as an "ideal" multicast
> > application. It is not.
>
> Why not?
>
> Bill.
>
>