Design of Logical Topologies for Wavelength Routed Networks

A virtual topology over a wavelength routed WAN consists of clear optical channels between nodes called lightpaths. These carry traffic end-to-end without electronic switching, creating an optical layer of the topology. Virtual topology design aims at combining the best of optical switching and electronic routing abilities. Designing a virtual topology on a physical network consists of deciding the lightpaths to be set up in terms of their source and destination nodes and wavelength assignment.

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