On the performance of distributed lightpath provisioning with dynamic routing and wavelength assignment |
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| Authors: | Jian Liu Gaoxi Xiao Wei Wang |
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| Affiliation: | (1) Division of Communication Engineering, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore;(2) School of Telecommunications Engineering, Xidian University, Xi’an, 710071, People’s Republic of China |
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| Abstract: | Distributed lightpath provisioning in wavelength-division multiplexing (WDM) networks has gained wide research interests. In this article, we study the performance of distributed lightpath provisioning in WDM networks with dynamic routing and wavelength assignment (RWA). Specifically, we consider the case where routing of each lightpath is calculated based on globally flooded link-state information, and wavelength assignment is decided through local information exchanges. Simulation results show that such schemes steadily outperform those schemes with only global flooding or only local information exchanges. More significantly, the impacts of various factors on the proposed scheme, including RWA algorithm, network topology, number of wavelengths per fiber, global flooding interval, and traffic load, have been evaluated. Such evaluations help to achieve some insights useful for the future developments of efficient lightpath provisioning schemes. |
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| Keywords: | Wavelength-division multiplexing Distributed lightpath provisioning Routing and wavelength assignment |
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