Optical networks: a practical perspective
Optical networks: a practical perspective
Transmission-Efficient Design and Management of Wavelength-Routed Optical Networks
Transmission-Efficient Design and Management of Wavelength-Routed Optical Networks
Survivable Networks: Algorithms for Diverse Routing
Survivable Networks: Algorithms for Diverse Routing
Issues for routing in the optical layer
IEEE Communications Magazine
Novel algorithms for shared segment protection
IEEE Journal on Selected Areas in Communications
Traffic grooming for survivable WDM networks - shared protection
IEEE Journal on Selected Areas in Communications
Subpath protection for scalability and fast recovery in optical WDM mesh networks
IEEE Journal on Selected Areas in Communications
Restoration in all-optical GMPLS networks with limited wavelength conversion
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Shared path protection has been demonstrated to be a very efficient survivability scheme for optical networking. In this scheme, multiple backup paths can share a given optical channel if their corresponding primary routes are not expected to fail simultaneously. The focus in this area has been the optimization of the total channels (i.e., bandwidth) provisioned in the network through the intelligent routing of primary and backup routes. In this work, we extend the current path protection sharing scheme and introduce the Generalized Sharing Concept. In this concept, we allow for additional sharing of important node devices. These node devices (e.g., optical-electronic-optical regenerators (OEOs), pure all-optical converters, etc.) constitute the dominant cost factor in an optical backbone network and the reduction of their number is of paramount importance. For demonstration purposes, we extend the concept of 1:N shared path protection to allow for the sharing of electronic regenerators needed for coping with optical transmission impairments. Both design and control plane issues are discussed through numerical examples. Considerable cost reductions in electronic budget are demonstrated.