All things related to multicast

[Dan Pritts <>]

On Tue, Sep 02, 2003 at 03:35:13PM -0400, Marshall Eubanks wrote:
> Is anyone out there using IGMPv3 snooping ? I would like
> any reports of what equipment supports it and any experiences.

I've done some very basic testing with recent firmware on HP procurve
switches (4000m, 4108gl, 2650), and I *think* everything worked ok but i
won't swear to it since we ended up dropping back to IGMPv2 for various
reasons.

I haven't tested it in a CGMP environment, i've got a Juniper at my edge.

I might surmise based on alan's question that you have a non-cisco switch
between your router and your cisco switch, and you are concerned that
the cisco switch is not seeing the CGMP multicasts.  I would not be at
all surprised if your non-cisco switch weren't filtering out the CGMP
because the cisco switch doesn't do a "join" of that group.  (not meant 
as a definitive statement of cisco switch behavior, just a guess)

danno
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dan pritts                                       

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