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On providing quality-of-service control for core-based multicast routing

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3 Author(s)
Hung-ying Tyan ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Hou, J. ; Wang, B.

In this paper, we develop efficient admission control tests for member join/leave and its associated state refresh and update procedures for receiver-initiated core-based multicast routing, e.g., core based tree (CBT) protocol, to allow construction of QoS-capable multicast trees, while making the minimum possible impact on the existing infrastructure. Specifically, we (i) derive sufficient conditions for a multicast tree to maintain its QoS; (ii) devise effective admission tests to verify whether or not a group member may join the multicast tree at adequate QoS, while not violating existing QoS guarantees to other on-tree members; and (iii) identify the minimum set of state information required for the admission tests and develop a soft state refresh and update procedure. Finally, we validate the effectiveness of the proposed mechanism by incorporating it into the CBT protocol, and evaluate it via event-driven simulations in terms of the probability of join requests being rejected, message overhead, and scalability

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Distributed Computing Systems, 1999. Proceedings. 19th IEEE International Conference on

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