All things related to multicast

[John Meylor <>]

John Zwiebel wrote:
> On May 13, 2004, at 3:19 PM, John Meylor wrote:
>
> > remember ASM includes PIM-bidir (any source)
> >  we've seen excellent success with large multi-way
> > voip applications using PIM-bidir
> John, technically you are right that ASM includes bidir,
> but I'd rather you just called it Bidir and keep
> ASM to mean PIM-SM/MSDP/MBGP.

But John, thats not correct.

 ASM is service model defined by a host asking explicitly
  for the group and implicitly receiving any source associated
  with that group (modulo any policy filtering in the network)
   Example IGMPv2/MLDv1 and PIM-SM provide this model
   as does IGMPv2/MLDv1 and PIM-bidir for v6 multicast

  - PIM-SM/MSDP/MBGP is a way to run PIM-SM based ASM model
     interdomain.

 SSM is the service model defined by a host asking explicitly
  for the group AND explicitly for the source(s) of that
   group.
    Example IGMPv3/MLDv2 and PIM-SSM provide this model

I'll leave the debate over ASM vs SSM to you, I can only
say we're seeing both used successfully.

 john