In networks where there is no router present to act as a multicast router, a switch with IGMP snooping querier enabled can be used to generate the needed IGMP messages to get users to subscribe to multicast traffic.

Is router multicast?

Multicast IP Routing protocols are used to distribute data (for example, audio/video streaming broadcasts) to multiple recipients. Using multicast, a source can send a single copy of data to a single multicast address, which is then distributed to an entire group of recipients.

Does multicast work over WiFi?

Multicast over WiFi Problems

802.11 is a wireless broadcast medium which works well for unicast and has become ubiquitous in its use. ... Multicast, over wifi, is typically sent on a low date rate which makes video negatively impacted. Wifi loses many more packets then wired due to collisions and signal loss.