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The authors have currently reached a phase where big shifts in the network traffic might impose to rethink the design of current architectures, and where new technologies, being pushed into market, will act as enabler of such changes. Taking into account the current scenario and its likely evolution as well, in this paper they examine the case for multi-path routing within the metropolitan access network. Through an optimization framework, they undertake the analysis of several interesting aspects of the problem, such as the user access technology, the topology of the access network and the traffic locality ratio within the access.
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