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We propose a shared protection scheme based on the sharing principle among multiple end-to-content backup paths in optical datacenter networks. Numerical results show it can reduce wavelengths consumption while ensuring the survivability against multi-failures.
A centralized and unified control mechanism is proposed to merge heterogeneous optical networks into Software-Defined Optical Network (SDON) for dynamic and efficient service delivery. The proposals are experimental demonstrated via a completely extended controller based on Opendaylight (ODL) Project.
This paper addresses the minimum network cost problem for survivable virtual optical network mapping in flexible bandwidth optical networks. We develop an ILP model and the LBSD (the largest bandwidth requirement (LB) of virtual links versus the shortest distance (SD)) mapping approach to minimize the network cost for a given set of VONs, and we introduce two baseline mapping approaches, named LCLC...
This paper addresses the problem of minimizing spectrum usage for shared-path protection with joint failure probability constraint in flexible bandwidth optical networks. To achieve this goal, we propose an integer linear programming (ILP) model for shared-path protection and a heuristic spectrum-aware shared protection (SASP) algorithm that considers joint failure probability. Simulation results...
We propose an ILP model and an efficient rescaled failure-probability-aware algorithm (RFPA) to minimize spectral resource consumption. Simulation results show that, compared to a traditional algorithm, both ILP model and RFPA achieve higher spectrum efficiency.
PCE is an emerging technology to aggregate path computation tasks in some certain elements. The location of these elements may influence network performance. In this paper, an ILP model for PCEs location problem is formulated and a heuristic algorithm is proposed. Simulations are conducted to evaluate the effectiveness of the algorithm presented.
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