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MS-210 IGMPv3

Hi colleagues. Could someone describe why Meraki Switch behavior is very odd - when IGMP snooping is enabled and Flood Unknown Traffic disabled, even if IGMP Querier is on - no traffic is passing through switch. But vice versa - when IGMP snooping is enabled and Flood Unknown traffic is disabled - traffic is passing through switch.

What can be reasons for that strange behavior? I thought that IGMP snooping is a technology which can let a switch to wait for a clients which they are in multicast group. But in my case I should to turn on flooding(which is exactly broadcasting) in order to let clients to have a traffic which is located in this multicas group

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omz
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Hi 

This may help - https://community.meraki.com/t5/Switching/Multicast-Basic-s/td-p/25706

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