Go to “Switching => Multicast”
Select “igmp snooping” and ensure “igmp snooping status” and “Validate IGMP IP header” are set to “enable”
Select “IGMP Snooping VLAN Configuration” and ensure all settings are set to “enable” for VLAN 1
Select “Querier Configuration” and ensure “querier admin mode” is set to “enable”
Select “Querier VLAN Configuration” and ensure VLAN ID is set to 1
Select “Querier VLAN status” and check VLAN 1 operational state is “querier”
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