Which protocol allows multicast switches to join computers to the multicast group?

The Internet Group Messaging Protocol (IGMP) allows switches to join computers to the multicast group table. This allows the selective process of snooping to occur when a transmission is sent. Internet Control Message Protocol (ICMP) is used by IP utilities such as traceroute and ping for diagnostics. Intelligent Platform Management Interface (IPMI) allows systems to be monitored and managed at the hardware level.