igmp-snooping is not a protocol but a feature that switches have to control multicast traffic. In a broadcast domain, multicast is flooded on all ports so the snooping mechanism listen for an IGMP client and send multicast traffic only on the necessary ports in the multicast forwarding table.
# Base Config
igmp-snooping enable
igmp-snooping send-query enable
vlan 9
name LAB-MULTICAST
multicast drop-unknown
igmp-snooping enable
igmp-snooping report-suppress
igmp-snooping querier enable
Troubleshooting commands:
display igmp-snooping configuration
display igmp-snooping
display igmp-snooping port-info vlan 9
display l2-multicast forwarding-table vlan 9
.glitchlist crew