Abstract
We state a new problem of itinerant routing in elastic optical networks, which we define as the establishment and reconfiguration of an itinerant connection. In an itinerant connection, one of the connection end nodes is allowed to change. Itinerant routing could also be considered a form of connection restoration, where a connection has to be restored to a different end node. With the introduction and growth of mobile-network services and content-oriented services, and the eventual deployment of elastic optical networks, there is a need to support this itinerant routing in the elastic optical networks. We present and discuss two major use cases of the itinerant routing, and propose a novel reconfiguration algorithm. Our algorithm does not deteriorate the network performance, and requires half as many new links to configure in comparison with the complete shortest-path reconfiguration algorithm. The performance evaluation was carried out with 46 800 simulation runs using randomly-generated realistic transport networks.
© 2017 IEEE
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