SMRS: A Scalable Multi-Path Routing Scheme

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Executive Summary

Source routing has been extensively investigated as a method of improving diversity in path selection. Due to its limited scalability, the application of source routing is hindered today. The authors proposed a tag-based routing architecture to provide a set of non-shortest path routes as an alternative to explicit source routes. The idea is that each router constructs a deflection set with the 1-hop route information and utilises tags as hints to independently deflect packets to the neighbours in the deflection set. To find more diverse paths, one approach is to increase the route knowledge of every node.

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