Multiperiod Planning of Multilayer IP over Flexgrid WDM Networks with Variable Channel Rates

Conference: Photonische Netze - 16. ITG-Fachtagung
05/07/2015 - 05/08/2015 at Leipzig, Deutschland

Proceedings: ITG-Fb. 257: Photonische Netze

Pages: 6Language: englishTyp: PDF

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Autenrieth, Achim; Elbers, Joerg-Peter; Griesser, Helmut; Grobe, Klaus (ADVA Optical Networking SE, Fraunhofer Str. 9a, 82152 Martinsried, Munich, Germany)

In this paper we evaluate the impact of variable channel rates on the design of multilayer IP over WDM networks in a multiperiod network planning approach. After a short summary of the technology options for optical networks with flexible WDM grid, we present current software-defined optical interface technologies implementing these options. Next we introduce planning strategies for multi-line rate IP over flex-grid optical networks based on an auxiliary graph model. Finally, we discuss the impact of higher grooming capacity and variable channel rates on multi-period planning of multiple network layers, specifically IP over WDM. The planning approach is validated in a network study with reference network scenarios analyzing the impact of link lengths and grooming threshold to install bypass grooming links.