Does igmp snooping do anything if the multicast source and receiver hosts are connected to the same layer 2 vlan?
I know igmp snooping limits the flood of multicast out all ports on a layer two segment, but isn’t it based on a multicast router being present? If you’re not running pim and not routing multicast across networks, then does enabling igmp snooping on the switch even do anything? The white paper on the matter says the switch monitors for igmp join group messages going to the multicast router. So now I’m wondering without said multicast router will this still work?
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