The Internet Group Management Protocol with Access Control (IGMP-AC) has been designed for incorporating AAA protocol functionality in the existing IP multicast model.
It will enforce authentication and authorization of an end user or receiver before joining or leaving a secured multicast group.
To add AAA functionality, an access router or one-hop router of the receiver will act as a network access server (NAS).
[1] It provides a generic client-server authentication protocol, where the receiver or end user will act as a client, the AAA server will act as a server and the access router (one-hop router of the receiver) will perform the forwarding task.
The IGMP-AC will not disrupt the usual function of the IGMPv3 (to be used for classical multicast group), and the access control mechanism of IGMP-AC will take place to join/leave a secured or restricted multicast group only.