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Problem Overlay multicast is not scalable to the number of co-existing groups

Multicast Groups. Aggregated Trees. MSON (Multicast Service Overlay Network). Application Layer Multicast. T 0. D. (g 0 , g 1 ). Aggregated Multicast. C. B. E. A. (g 0 , g 1 , g 2 ). (g 0 , g 1 , g 2 ). UCLA CSD Network Research Lab http://www.cs.ucla.edu/NRL/.

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Problem Overlay multicast is not scalable to the number of co-existing groups

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  1. Multicast Groups Aggregated Trees MSON (Multicast Service Overlay Network) Application Layer Multicast T0 D (g0, g1) Aggregated Multicast C B E A (g0, g1, g2) (g0, g1, g2) UCLA CSD Network Research Lab http://www.cs.ucla.edu/NRL/ SHOMA: Scalable Overlay MulticastLi Lao, Jun-Hong Cui, Mario Gerlallao@cs.ucla.edu, jcui@cse.uconn.edu, gerla@cs.ucla.edu • Problem • Overlay multicast is not scalable to the number of co-existing groups • Application-level multicast is not scalable to large-size groups • Goal: to design a scalable multicast scheme • Proposed Solution • Scalable Hybrid Overlay Multicast Architecture (SHOMA) • Backbone domain: Multicast Service Overlay Network using aggregated multicast • Access networks: application-level multicast • Benefits • Scalable to group size w.r.t. multicast tree performance and control overhead • Reduce multicast state information and speed up packet forwarding • Reduce multicast tree setup and maintenance overhead • Facilitate member access control, pricing and heterogeneity handling • Performance Evaluation g0, g1: perfect match g2: leaky match SHOMA Aggregated Multicast Tree management overhead of SHOMA Comparison of multicast tree cost b_th: bandwidth waste threshold for leaky match

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