A Multipath-Based Survivability Scheme in Energy-Efficient EON

In this letter, we have proposed a novel energy efficient multipath-based survivability scheme against single link failure in static traffic scenario. A two-step integer linear programming model is formulated to minimize the use of energy consuming elements by the network, where both the constraints regarding survivability and energy efficiency are considered simultaneously. It is observed that significant power consumption by the network can be saved using optical grooming over the electrical grooming for different protection ratios.