Managing Group Dynamics and Failures in QoS Multicasting
The recent proliferation of QoS-aware group applications over the Internet has accelerated the need for scalable and efficient multicast support. This paper presents a multicast "Life-Cycle" model which identifies the various issues that are involved in a typical multicast session. During the life-cycle of a multicast session, three important events can occur: group dynamics, network dynamics, and traffic dynamics. The first two aspects are concerned with maintaining a good quality (e.g., Cost) multicast tree taking into ac-count member join/leave and changes in the network topology due to link/node failures/additions, respectively.