Abstract
Even though tree-based reliable multicast protocols are known to be most scalable for one-to-many sessions, there is still an open question as to whether these protocols are also scalable for many-to-many sessions. In this paper, we analyze and compare two promising multicast protocols—the receiver-initiated protocol with NACK suppression and the tree-based protocol—using a new spatial loss model. The proposed model considers the correlation of packet loss events for more realistic analysis unlike the previous work. The analysis results show that the tree-based protocol achieves much higher throughput than the receiver-initiated protocol for a many-to-many session as the number of participants in the session becomes larger. Copyright © 2004 John Wiley & Sons, Ltd.
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