Free-space optoelectronic switching cores with MPLS for SANs over WDM ring networks

Hsi-Hsir Chou, Bernardi Pranggono, T.D. Wilkinson, F. Zhang, W.A. Crossland, J.M.H. Elmirghani

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


With increasing demands on storage devices in the modern communication environment, the storage area network (SAN) has evolved to provide a direct connection allowing these storage devices to be accessed efficiently. To optimize the performance of a SAN, a three-stage hybrid electronic/optical switching node architecture based on the concept of a MPLS label switching mechanism, aimed at serving as a multi-protocol label switching (MPLS) ingress label edge router (LER) for a SAN-enabled application, has been designed. New shutter-based free-space multi-channel optical switching cores are employed as the core switch fabric to solve the packet contention and switching path conflict problems. The system-level node architecture design constraints are evaluated through self-similar traffic sourced from real gigabit Ethernet network traces and storage systems. The extension performance of a SAN over a proposed WDM ring network, aimed at serving as an MPLS-enabled transport network, is also presented and demonstrated.
Original languageEnglish
Article number6235187
Pages (from-to)533-545
Number of pages13
JournalIEEE/OSA Journal of Optical Communications and Networking
Issue number7
Publication statusPublished - Jul 2012

ASJC Scopus subject areas

  • Computer Networks and Communications


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