Re: Use of SAP in a PIM SSM Network

[Toerless Eckert <eckert@cisco.com>]

> 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