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Exchanging Network Measurement Data using Web Services

Exchanging Network Measurement Data using Web Services. Merten Leupolt Supervisors: Daniel Gunter, DSD Martin Swany, University of Delaware DSD Meeting 20 August 2004. Overview. Intro: Why Exchange Network Measurements? Network Measurement Working Group Implementation of a Prototype

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Exchanging Network Measurement Data using Web Services

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  1. Exchanging Network MeasurementData using Web Services Merten Leupolt Supervisors: Daniel Gunter, DSD Martin Swany, University of Delaware DSD Meeting 20 August 2004

  2. Overview • Intro: Why Exchange Network Measurements? • Network Measurement Working Group • Implementation of a Prototype • References

  3. Why Network Measurement? • The Grid: constantly changing • Applications must adapt dynamically • Applications need access to information about environment

  4. Example Application Data source Scheduler Load Balancer GUI for Admin Logfile Database Ping

  5. NMWG • NMWG: Network Measurement Working Group • Purpose: agree on requirements and define a standard exchange format (protocol) • Current work: use XML and web services to exchange measurement data • 3 areas: request historical data, request new measurements, capabilities discovery

  6. Layers • Current approach viewed as layers: • Problem: too many contradicting requirements • Solutions? Application NMWG Protocol Layer Data Storage / Tool

  7. Possible Development 1 • One simple abstraction layer • Multiple domain specific layers Application Application domain specific layer domain specific layer simple abstraction layer Data Storage / Tool

  8. Possible Development 2 • Multiple domain specific layers • E.g. for retrieving historical data/requesting new Measurements Application Application domain specific layer domain specific layer Data Storage / Tool

  9. Implementation of a Prototype

  10. Technology: Python, Netlogger, ZSI • Python: great for rapid prototyping • Netlogger: lots of useful code (Brian Tierney, Dan Gunter) • ZSI: Open Source Python SOAP Framework (contributions by Monte Goode and Joshua Boverhof for pyGridWare) SOAP: A minimal set of conventions for invoking code using XML over HTTP. [Foldoc]

  11. Prototype Webclient Server Server Client Client Internet2 Database NetLogger Database

  12. References • Demo: http://dsd.lbl.gov/~mele • This presentation: http://dsd.lbl.gov/~mele/talk • NMWG Homepage: http://www-didc.lbl.gov/NMWG/ • NetLogger Homepage http://dsd.lbl.gov/netlogger/ • Python Webservices Project and ZSI on SourceForge: http://pywebsvcs.sourceforge.net/

  13. Thank you

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