Network design for IP-centric light trail networks

Abstract— We explore network design principles for nextgeneration all-optical wide-area networks, employing light-trail technology. Light-trail [1] is a light-wave circuit that allows multiple nodes to share the optical bandwidth through the inclusion of simple but flexible hardware overlaid with a lightweight control protocol. We develop light-trails as a novel and amenable control and management solution to address IPcentric communication problems at the optical layer. We propose optical switch architectures that allow seamless integration of lightpath and light-trail networks, and assess their costs and capabilities. We formulate the static light-trail RWA problem as an Integer Linear Program. Since this programming problem is computationally intractable, we split it into two subproblems: (a) trail routing, for which we provide three heuristics, (b) wavelength assignment, for which we use the largest first heuristic available in literature. The objective of our design is to mini...

• Type: Conference
• Year: 2005
• Where: BROADNETS
• Authors: Srivatsan Balasubramanian, Ahmed E. Kamal, Arun K. Somani
• Keywords: All-optical Wide-area Networks, BROADNETS 2005, Optical Layer, Optical Switch Architectures