Motivation and Approach

Among the end-system multicast protocols proposed, tree-based systems have proven to be highly scalable and efficient in terms of physical link stress, state and control overhead, and end-to-end latency. However, normal tree structures are highly dependent on the reliability of non-leaf nodes.

We are addressing the resilience issue of tree-based systems based on co-leaders and triggered negative acknowledgments (NACKs), Nemo's design emphasizes conceptual simplicity and minimum dependencies, achieving, in a cost-effective manner, performance characteristics resilient to the natural instability of its target environment.

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