Abstract
For the abundant bandwidth, a malfunction in optical networks causes a great deal of loss to traffic, and hence the survivability of optical networks must be considered. Two technologies, protection and restoration, are used in general, and the former is investigated in this paper. The existing protection strategies mainly cope with a single link failure or a double-link failure in an optical network and not consider what causes these failures. In this paper, we study the reasons which lead to the network malfunctions, and pose a new concept named regional demolishment. A protection algorithm named Ellipse-underlay algorithm is also proposed. We compare the performance of the Ellipse-underlay algorithm to the Node-disjoint algorithm. Simulation results show that the Ellipse-underlay algorithm is more effective to the survivability of traffic than the Node-disjoint algorithm.
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Zhou, X., Yuan, J. & Wang, J. Ellipse-underlay protection algorithm to deal with regional demolishments in mesh optical networks. Photon Netw Commun 20, 247–256 (2010). https://doi.org/10.1007/s11107-010-0266-y
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DOI: https://doi.org/10.1007/s11107-010-0266-y