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Exchanging Network Measurement Data using Web Services

This presentation discusses the necessity of exchanging network measurement data to enable applications to dynamically adapt to ever-changing grid environments. It introduces the Network Measurement Working Group (NMWG) and outlines the development of a prototype that utilizes XML and web services for data exchange. Key areas of focus include historical data requests, new measurements, and capabilities discovery, with implementation using Python, Netlogger, and ZSI. The session emphasizes the need for standardization amidst conflicting requirements and showcases a demo and further resources.

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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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