Step1: When a host want to join any particular multicast group it will send IGMP Report Message to " All hosts Multicast Address " = 224.0.0.1
Step2: Then Router( Default Gateway) is going to send IGMP Query Message to " All hosts Multicast Address " = 224.0.0.1 for every 60 seconds to know whether hosts are interested to receive multicast traffic or not.
S3: When hosts in the group receive IGMP Query Message from the Router, they will start count down timer between 1 to 10 seconds which is not configurable. If countdown timer reaches to 1 only one host is going to send Report Message, instead of all hosts are sending Report Message to the Router. This is called as Report Suppression used to save the bandwidth.
S4: If any host does not want to receive the Multicast traffic then the host is going to send IGMP Leave message to the router.
S5: After receiving the IGMP leave message from the host on the router then the router is going to send the IGMP General Query for specific Group Address to know any other hosts are interested for the multicast traffic.
S6: If the router does not receive the IGMP Report message within 3 seconds then the router stops sending the multicast traffic for the group.
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