English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

LightFDG is an integrated approach to flow detection (FD) and flow grooming(FG) in optical wireless data center networks (DCNs), which is interconnectedvia wavelength division multiplexing (WDM) based free-space optical (FSO)links. Since forwarding bandwidth-hungry elephant flows (EFs) anddelay-sensitive mice flows (MFs) on the same path can cause severe performancedegradation, the LightFDG optically grooms flows of each class intorack-to-rack (R2R) flows. Then, R2R-MF and R2R-EF flows are separatelyforwarded over lightpaths of separate MF and EF virtual topologies,respectively. Lightpaths are provisioned by jointly determining the capacityand route based on flows' arrival rate, size, and completion time request. Toprevent EFs from congesting the MF lightpaths, high speed and accurateflow-detection mechanisms are also necessary for classifying EFs as soon aspossible. Therefore, a fast-lightweight-and-accurate flow detection frameworkis developed by leveraging the transmission control protocol (TCP) behaviors.The proposed FD scheme has the flexibility of being implemented as in-networkor centralized to classify flows of modifiable and unmodifiable hosts,respectively. Since the centralized scheme incurs considerable overhead, theprocessing and communication overhead is also mitigated by proposed techniques.Numerical results show that LightFDG outperforms traditional load balancers byabout 3x for EFs and 10x for MFs. Along with the developed overhead mitigationmethods, the centralized scheme is shown to provide up to 62x lower overheadwith 100% accuracy and with about 224x higher detection speeds than theexisting centralized solutions.

LightFDG: An Integrated Approach to Flow Detection and Grooming in Optical Wireless DCNs