Technical Report CS0914

Title: A TCP-Based Approach for Reliable Multicast
Authors: Gideon Kaempfer and Reuven Cohen
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Abstract: This paper presents a novel approach for implementing reliable multicast transport protocols, by using a reliable (TCP-like) unicast protocol as a basic building block. This approach allows the multicast protocol developer to focus on the intrinsic problems of multicasting while leaving reliability and congestion control issues to existing protocols and software. The special restrictions the proposed approach imposes on the multicast routing tree are discussed, and the effect of these restrictions on some related multicast routing problems is examined. The hardness of the restricted routing problems is proven in the context of conventional networks, and in the context of active networking. Finally, approximation algorithms for finding maximal bandwidth routing trees are proposed.
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