Presentation & Evaluation of LOCARN: Low Opex and Capex Architecture for Resilient Networks.
Damien Le Quéré, Christophe Betoule, Rémi Clavier, Yassine Hadjadj Aoul, Adlen Ksentini, Gilles Thouénon · Studia informatica universalis · 2014
This article proposes LOCARN: an alternative network architecture providing a packet connectivity layer, which is able to self-adapt its routing paths opportunistically according to both the network resources changes and the effective traffics fluctuations. Moving close to a global maximization of available resources usage and assuming high resiliency under failures, LOCARN focuses on components coupling simplicity and plug-and-play guidance. The following article presents the architecture and then evaluates its performances. Specifically, LOCARN produces significant overheads in counterparty of its suitable properties, because of the radicality of its design. Considering its overall characteristics, we envision LOCARN as an alternative to current packet transport network architectures based on IP/MPLS, typically metropolitan and cores subparts of operators’ networks. We show thereafter that in a such use case the overhead impact is acceptable and even negligible beside the transmission capacities available in such networks. To do so, we rely on analysis, on computer simulations and finally on a statistical model.