Topology-aware overlay multicast over IP multicast networks |
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Authors: | Xiao Chen Hua-gang Shao Wei-nong Wang |
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Affiliation: | 1. Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China 2. Regional Network Center of East China, Shanghai 200030, China |
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Abstract: | Most existing overlay multicast approaches refuse to consider any network layer support no matter whether it is available or not. This design principle greatly increases the complexity of the routing algorithms and makes the overlay topologies incompatible with the underlying network. To address these issues, topology-aware overlay multicast over IP multicast networks (TOMIMN) was proposed as a novel overlay multicast protocol, which exploits the cooperation between end-hosts and IP multicast routers to construct a topology-aware overlay tree. Through a little modification to protocol independent multicast sparse mode (PIM-SM),a multicast router is able to receive registration from nearby group members and redirect passing-by join re-quests to them. Due to the multicast router's support, TOMIMN organizes its group members into an overlay multicast tree efficiently, which matches the physical network topology well. |
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Keywords: | overlay networking network architecture overlay multicast |
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