Re: Use of SAP in a PIM SSM Network

["HANSEN CHAN" <hansen.chan@alcatel.com>]

To have SDP sessions available via the web. Is it the same as going to a webcast
site (e.g. Yahoo Broadcast and Lycos TV) and click on the program link? How does
my PC learn the multicast group address by clicking on the link?

Thanks,
Hansen

Toerless Eckert wrote:

> > I am trying to understand in a pure SSM network without any shared tree,
> > how would SAP operate? My understanding is that SAP is transmitting on a
> > shared tree. Does it mean that we always stuck with a PIM-SM shared
> > tree, even in a pure SSM network?
>
> I think you have a network without a shared tree and without SAP. You can
> of course use SSM to get SAP information, but the receivers need to know
> the address of the sources in the first place, which is a bit beyond the
> point of what SAP was meant for in the first place. SAP is nice to have
> in limited environments, but simply trying to broadcast directory information
> on a world-wide scale is not a scaling solution. Already today lots of
> SDP sessions are just made available via the web instead of SAP.
>
> -- Toerless