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Project: RAPID PDF Print E-mail
Written by Ilya Baldin   
Friday, 30 July 2010 20:17

Project Participants: Jasleen Kaur, Don Smith (UNC-CH), Shu Huang, Dan Bedard (RENCI)

Fine-scale end-to-end probing refers to the sending of short-duration packet streams with controlled inter-frame gaps on a network path and studying changes in inter-frame gaps at the receiver to estimate properties such as end-to-end available bandwidth and bottleneck transmission capacity. This is a fundamental concept that is used in several application domains—including network diagnostic tools, multi-path routing, and more recently, design of high-speed transport protocols such as RAPID begin developed at UNC.

In this project funded through NSF SDCI, a RAPID protocol prototype will be hardened for general use and a hardware implementation will be created based on NetFPGA10G capable of supporting sustained rates of 10Gbps.

We will be using the BEN infrastructure, including its connections to NLR FrameNet, StarLight, and C-Wave to understand the behavior of fine-scale probing in real networks at speeds up to 10 Gbps. The first set of experiments will be to evaluate the ability of the end-system hardware and software that generates the probes to control, create, and observe fine-scale (microsecond) inter-frame gaps at 10 Gbps speeds. The experiments will evaluate the probing accuracy on both dedicated and shared paths. The Tmix traffic generation tools will be used to create controlled and reproducible cross-traffic during the probing experiments.

BEN connects several clusters at UNC-CH CS department to NLR FrameNet to create various loopback configurations that enable RAPID protocol testing. 

Visit the project website here

Last Updated ( Wednesday, 16 November 2011 16:56 )