A study on cross-layer multi-constraint path computation for IP-over-optical networks

Authors:
Xi Yang;Tom Lehman;Kenichi Ogaki;Tomohiro Otani
Affiliations:
USC, Arlington, VA;USC, Arlington, VA;KDDI R&D Laboratories, Inc., Fujimino, Saitama, Japan;KDDI R&D Laboratories, Inc., Fujimino, Saitama, Japan
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

A powerful path computation element is a must for the next-generation IP-over-Optical networks to support on-demand service provisioning crossing layers. The main purpose of path computation in multi-layer networks (MLN) is to enable traffic engineering (TE) under a multitude of constraints. A common objective of such traffic engineering is to minimize resource utilization while satisfying all the applicable constraints. In this study, we investigate a variety of MLN path computation methods based on real-world control plane implementations and network settings. We present some techniques for handling the specific TE constraints that concern the IP-over-Optical networks. Experimental results are presented for performance evaluation and comparison of the investigated multiconstraint path computation methods and techniques.