The three topologies shown below indicate how the IGMP Query works
within a network:
1. This topology is set when the router s IP address is smaller than other
Switches in the subnet.
2. This topology is set when the router s IP address is larger than other
Switches in the subnet.
Note: The SmartGST-801M supports IGMP protocol but IGMP must be
enabled and the switch must be the querier.