Scalable software-defined optical networking with high-performance routing and wavelength assignment algorithms

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The feasibility of software-defined optical networking (SDON) for a practical application critically depends on scalability of centralized control performance. The paper, highly scalable routing and wavelength assignment (RWA) algorithms are investigated on an OpenFlow-based SDON testbed for proof-of-concept demonstration. Efficient RWA algorithms are proposed to achieve high performance in achieving network capacity with reduced computation cost, which is a significant attribute in a scalable centralized-control SDON. The proposed heuristic RWA algorithms differ in the orders of request processes and in the procedures of routing table updates. Combined in a shortest-path-based routing algorithm, a hottest-request-first processing policy that considers demand intensity and end-to-end distance information offers both the highest throughput of networks and acceptable computation scalability. We further investigate trade-off relationship between network throughput and computation complexity in routing table update procedure by a simulation study.
Publisher
OPTICAL SOC AMER
Issue Date
2015-10
Language
English
Article Type
Article
Keywords

WDM NETWORKS

Citation

OPTICS EXPRESS, v.23, no.21, pp.27354 - 27360

ISSN
1094-4087
DOI
10.1364/OE.23.027354
URI
http://hdl.handle.net/10203/205744
Appears in Collection
EE-Journal Papers(저널논문)
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