Abstract

this paper. The "RSVP Multicast" model provides a multipoint-to-multipoint communication model with QoS. It enables flows to request several types of reservations with aggregation of resources and filtering. Receivers can dynamically access an RSVP session by joining the corresponding multicast groups. They can choose which packet and QoS they want by doing filtering and specifying reservations. So far, providing efficient multicast communication with QoS support is not achieved today in the IP world. On the other hand, the ATM technology was sold as a solution for providing a powerful set of QoS virtual circuits (VC) to satisfy all needs. Nevertheless, the ATM multicast scheme is quite simple: it only allows point-to-multipoint connections with explicit receivers when initiating the multicast tree. Point-tomultipoint VC QoS is identical for all receivers and defined only once. Again, multicast support with QoS is far to be supported in the ATM environment. The ubiquity of IP associated with the acknowledgment of ATM as a key switching technology has motivated an increasing interest towards the design of a more efficient way of operating IP over ATM networks. Different solutions have been proposed by the ATM Forum and the IETF (Internet Engineering Task Force):

Citations