Re: Is there an alternative to "ip igmp snooping querier" when stuck with SX_3.3.3500, which doesn't support "querier"?

This community post might be useful:

HowTo Configure IP Multicast (PIM, IGMP) on Mellanox Ethernet Switches

Also in the newer manuals, there is more documentation about IGMP. For full functionality you should run at least 3.3.5200,,,but really you want to run the latest available version.