title: Scalable software-defined optical networking with high-performance routing and wavelength assignment algorithms.
abstract: 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.
authors.forename: Chankyun
authors.initials: C
authors.lastname: Lee
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Cao
authors.forename: Noboru
authors.initials: N
authors.lastname: Yoshikane
authors.forename: Takehiro
authors.initials: T
authors.lastname: Tsuritani
authors.forename: June-Koo Kevin
authors.initials: JK
authors.lastname: Rhee