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I was wondering if someone could advise on this please - I want to set up multicasting on a network of layer 3 switches.

So I understand I should enable ip igmp snooping on all the switches and then I should set one switch as the querier. So with the switch in question I enable ip igmp querier globally but I know I will need an SVI.

My question is on the Querier switch do I need to enable an SVI for each vlan that I plan to multicast on or is just one random SVI on the querier switch enough for all the vlans ?

Thanks