Attack-aware Lightpath Provisioning in Elastic Optical Networks with Traffic Demand Variations

Abstract

This work considers lightpath provisioning in elastic optical networks with traffic demand variations while accounting for the impact of jamming attacks. Traffic requests are modeled based on their variation in traffic and a number of network traffic scenarios are pre-computed. Variations in traffic are used in order to design the network with improved resilience to jamming attacks in the general case, without considering a specific traffic matrix. The mathematical formulation and heuristic algorithms proposed in this work jointly consider the routing and spectrum allocation problem for the pre-computed network scenarios, aiming to minimize the required lightpath reallocations and the number of wavelength selective switches (WSSs) placed at specific network nodes/ports so as to minimize the impact of jamming attacks. Performance results demonstrate the benefits of this approach in terms of required lightpath reallocations, number of WSSs, as well as computational time required for dynamically reconfiguring the network when considering traffic demand variations.