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  • Optical Fiber Communications Conference
  • OSA Trends in Optics and Photonics (Optica Publishing Group, 2002),
  • paper ThW6

Lazy Flooding: A New Technique for Signaling in All Optical Network

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Abstract

In a distributed all optical network, resource and network topology information has to be constantly updated at each optical switch, such that correct lightpath decision can be made in a dynamic and distributed networking environment. In an all optical network such as Lucent Lambda Router Network, 2 the topology information, which includes the Optical Cross Connect (OXC) up and down and the fiber (link) cut and repair, is flooded throughout a separate Data Communication Network (DCN), which is a signaling network. In addition, when a lightpath is set up and torn down all the involved channel status is changed from being available to occupied and vice versa, and this information is also flooded throughout the DCN network. Obviously, for a network with N nodes (OXC), each channel, link or node status change results in an order of N2 messages to be flooded via the DCN, 1 leading to signaling network congestion and instability, also making it difficult to scale up.

© 2002 Optical Society of America

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