CSM redundancy and multicast

[mplatise]

In the documentation (http://www.cisco.com/en/US/partner/products/hw/switches/ps708/products_installation_and_configuration_guide_chapter09186a00801c58a8.html) is noted, that when CSM redundancy is in use, the igmp snooping must be disabled globally.

I wonder if this is really needed. How to control multicast traffic in such environment ? I assume that disabling igmp snooping for FT VLAN is enough.

Thank you for any comments.

[Gilles Dufour]

The reason for this statement in the documentation is because some problems were encountered during testing time and the solution was to disable igmp snooping.

However, I personally have not disable igmp snooping and have no problem.

You can do your own testing and see what is required for your network.

Regards,

Gilles.