Application-Oriented Multicast

Abstract

This chapter presents the basic design of application-oriented multicast (AOM). The service model of AOM is introduced in Sect. 3.1, which improves the scalability of IP multicast. However, several practical design issues have to be considered when realizing the service model over the practical Internet, which are described in Sect. 3.2. The implementation of AOM presented in Sect. 3.3 resorts to the Bloom filter technique to limit the explicit addressing overhead and utilizes the RPF concept to accommodate the longest prefix matching and route aggregation in the Internet, where the first two practical design issues are handled. With the Bloom-filter-based implementation of AOM, receivers send membership updating messages to the data source to construct a reverse SPT to facilitate the data forwarding; moreover, all the multicast membership and addressing information traversing the network is encoded with Bloom filters for low storage and bandwidth overhead. In Sect. 3.4, we describe some complex and detailed situations in the Bloom-filter-based AOM. A theoretical analysis of the Bloom filter performance is given in Sect. 3.5. The last two sections present a comprehensive simulation results and summarize the chapter, respectively.