Hierarchical routing in multi-domain optical networks

Authors:
Q. Liu;M. A. Kök;N. Ghani;A. Gumaste
Affiliations:
Tennessee Tech University, ECE Department, TTU, Cookeville, TN 38505, USA;Tennessee Tech University, ECE Department, TTU, Cookeville, TN 38505, USA;Tennessee Tech University, ECE Department, TTU, Cookeville, TN 38505, USA;IIT Bombay, India
Venue:
Computer Communications
Year:
2006

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Abstract

Given the increasing adoption of DWDM networking technology, there is now a growing need to address distributed inter-domain lightpath provisioning issues. Although inter-domain provisioning has been well studied for packet/cell-switching networks, the wavelength dimension presents many additional challenges. To address this challenge, a detailed hierarchical routing GMPLS-based framework for provisioning all-optical and opto-electronic multi-domain DWDM networks is presented. The scheme adapts various topology abstraction schemes to improve routing scalability and lower inter-domain blocking probabilities. Related inter-domain lightpath RWA and signaling schemes are also tabled. Performance analysis results are also presented to demonstrate the effectiveness of the proposed mechanisms along with directions for future research work.