All things related to multicast

[Leonard Giuliano <>]

On Tue, 1 Jul 2008, Hitoshi Asaeda wrote:

-) > 
-) > In any event, if we can rely on Google to find unicast content, I see no 
-) > reason why we couldn't rely on it to find mcast content.
-) 
-) Because multicast applications and services are more "dynamic".
-) It is in general difficult for such web crawling to look for all
-) available live streaming contents over the entire Internet within a
-) very short period (e.g. 1 min or so). (SAP can do for this point.)

Perhaps, but I suspect the vast majority of mcast streams will be fairly 
persistent, rather than ephemeral.

-) In addition, IP multicast needs to define and control "scope", while a
-) search engine that relies on a central (or logically central) server
-) cannot.

I've never been convinced that scoping is/should be as complicated as how 
it's been made out to be.  It's really no different than the 
Intranet/Internet distintions that most organizations have always dealt 
with in unicast.