Abstract
Recently there have been many requirements for reliability from the multicast communication services that have peer-to-multiple or multiple-to-multiple connecting ability unlike the previous peer-to-peer communications. Multicast protocols include the distance vector multicast routing protocol (DVMRP), multicast extension to open shortest path first (MOSPF), core based tree (CBT) and protocol independent multicast (PIM) structures. These protocols use their own local distance algorithms to utilize characteristics of network packets as routing costs in transferring data. However, multimedia applications require more efficient multicast protocols as well as broadband network connection, real-time transmission. To the requirement, the quality of service sensitive multicast Internet protocol (QosMIC) is urged to be used in Internet. The QosMIC supports several quality of service (Qos) properties: reliability, efficient resource management and flexibility of multicast networks. The QosMIC is in distinction from the existing protocols in that the QosMIC presents data in advance. This paper analyzes the QosMIC and CBT by using objective and practical bandwidths in transferring data packets, and measures their performances on a simulation to test such bandwidths.
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