GAIZI, Kenza Sidi Mohammed Ben Abdellah University - Faculté des Sciences et Techniques - Laboratoire de Signaux, Systèmes et Composants, Morocco , ABDI, Farid Sidi Mohammed Ben Abdellah University - Faculté des Sciences et Techniques - Laboratoire de Signaux, Systèmes et Composants, Morocco , ABBOU, Fouad Mohammed Al Akhawayn University - School of Science and Engineering, Morocco

A Novel Attack and Throughput-Aware Routing and Wavelength Assignment Algorithm in Transparent Optical Networks

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The transparency feature of All Optical Wavelength Division Multiplexing (WDM) Networks makes it an interesting topic of study. Although characterized by the high throughput, low bit error rate and low noise, Transparent Optical Networks are still considered prone to attacks. The transparency of the network and the lack of opto-electronic conversion allow malicious signals to propagate without being detected. This unnoticeable propagation results in performance degradation and damages the throughput of the network. While several approaches have been focusing on hardware based detective measures, this paper proposes a preventive throughput and attack aware algorithm based on secure topology design. This approach gives enough flexibility to the customer to choose the level of security and throughput that they want to achieve in the network. Namely, the algorithm aims at routing lightpaths in such a way as to minimize the worst case possible damage that can result from different physical-layer attacks. At the same time, the routes have to be selected in such a way as to ensure the desired throughput level. Consequently, two objective criteria for the Routing and Wavelength Assignment (RWA) problem are defined. The first one is referred to as the Maximum Lightpath Attack Radius (maxLAR), while the second is referred to as minimizing the blocking probability. Based on this, the routing sub-problem is formulated as mixed integer liner program (MILP). Tests are performed on small networks at the time being. When simulating attacks, results indicate that the formulation achieves significantly better results for the Maximum Lightpath Attack Radius and Minimum Blocking Probability.

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Routing and wavelength assignment , transparent optical networks , physical layer attacks , integer linear programming , tabu search , graph coloring

Mediterranean Telecommunications Journal

190