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This paper proposes a federated SDN controller architecture for optical networks. Simulations show that adequate combination of clustering strategies with enriched hierarchical path computation offer a routing performance comparable to conventional centralized architectures.
The introduction of software-defined networking (SDN) principles in the optical communications ecosystem promises to change the way things are done nowadays. Although many of these principles still require proper maturation, the main premises behind SDN are quite attractive: 1) The separation of control and data plane will ultimately result in simpler hardware elements in the network with the network...
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