After the basic IGMP functions are configured on the interface
that connects a multicast device to the user network segment, the
hosts on the user network segment can access the multicast network
and multicast packets can reach receivers.
After IGMP is enabled on the interface that connects a multicast device to the user network segment, the hosts on the user network segment can dynamically join the desired multicast groups.
The IGMP version needs to be configured on the interface that connects a multicast device to the user network segment. Ensure that all IGMP devices on the same network segment are configured with the same IGMP version. Otherwise, multicast function cannot run normally.
After a static IGMP group is configured on the interface that connects a multicast device to the user network segment, the multicast device considers that the interface has multicast group members and keeps on forwarding matched multicast packets to the interface.
When a host joins a multicast group, you can configure this function on the interface through which the multicast device is connected to the user network segment to limit the range of multicast groups that the host can join.