Network Virtualization in Optical Networks with Traffic Grooming

The Virtual Optical Network Embedding problem, also called VONE, deals with the efficient mapping of virtual resources onto opticals networks. This study proposes a heuristic algorithm called Sd-Mapping to resolve the VONE problem using traffic grooming techniques to carry several lower traffic requirements onto a single wavelength. The proposed algorithm it is compared with an reference algorithm of the literature with the following four metrics: Number of used wavelengths, Weighted number of lightpaths, Average number of physical hops and Grooming ports usage. The experimentals results show that the proposed algorithm can be regarded as a valid alternative based on promising results obtained in the following metrics over three test networks: Number of wavelengths, Weighted number of lightpaths and Average number of physical hops. In addition, this work compares five different grooming policies and the conclusion of this analysis is that the policy that minimizes the number of physical hops (MinThp) is the preferred policy considering the four metrics simultaneously.