[AG-TECH] IGMPv3, Source Specific Multicast, fully supported in Windows XP

Bill Nickless nickless at mcs.anl.gov
Fri Aug 16 13:14:29 CDT 2002

[Regarding (S,G) vs (*,G) joins]

At 01:06 PM 8/16/2002 -0500, Jeffrey Eschbach wrote:

>- From an infrastructure perspective, you are reducing complexity...
>   no Rendezvous Point, and therefore no need to initially establish a
>   shared multicast tree to share traffic before moving to a more
>   efficient source-based tree.
>- SSM for inter-domain multicast eliminates the problems with MSDP
>   (see Bill's e-mail).
>- Everyone auto-joining every source in a group may not be the best
>   case to consider for SSM... missing the benefits of being able to
>   purposefully AVOID someone's source.

In theory I agree with everything you say above.

But in practice, deploying IGMPv3 support in edge switches and routers is 
not trivial.

Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7     nickless at mcs.anl.gov

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