ICISP, Cap Esterel (France), August 26-28, 2006

1. Complementary Visualization of perfSONAR Performance Measurements Andreas Hanemann*, Vedrin Jeliazkov, Olav Kvittem, Luis Marta, Joe Metzger, Igor Velimirovic * German Research Network (DFN) c/o Leibniz Supercomputing Center, Munich hanemann@dfn.de ICISP, Cap Esterel (France), August 26-28, 2006

2. Presentation outline • Introduction • Visualization of network measurements • PerfSONAR system • Metric measurements and user groups • Visualization tools • Display of perfSONAR measurements • For different user groups in multi-domain environments • Conclusion and Future Work

3. Introduction: Network Performance Measurements • Survey showed that many network performance metrics are of interest, especially • Link utilization • One-way delay and its variation (aka jitter) • Round trip time and its variation • Packet loss • Interface errors and drops • Differentiation demanded for IPv4/IPv6 and unicast/multicast

4. Introduction: Visualization tools • A variety of visualization tools already exist for displaying these metrics, • But these have limitations • Not cross-organizational (reflect different transparency policies) • Combined measurement and visualization of a limited set of metrics • Limitations with respect to user groups

5. perfSONAR system: Introduction • perfSONAR (Performance focused Service Oriented Network Monitoring Architecture) system • Is a joint effort of EU-funded IST project GN2-JRA1, Internet2, and ESnet • The solution is deployed and further elaborated in • European Research Backbone Géant • Connected European National Research and Education Networks • Internet2’ s Abilene network • ESnet (Energy Sciences network in US) • RNP (Brasilian NREN) • Open source development also for other interested networks • Name reflects the choice of Service Oriented Architecture

6. perfSONAR system: Measurement framework User Interface Layer User interface 1 User interface 2 Service Layer Domain A - services Domain B - services Domain C - services Measurement Point Layer Domain A Domain B Domain C Metric 1 Measurement Point Metric 2 Measurement Point Type 1 Metric 2 Measurement Point Type 2

7. Location of RRD MAs and Hades MPs 13 RRD MAs Ann Arbor Athens Belgrade Berkeley Cambridge Poznan Prague Rio Sofia Thessaloniki Trondheim Zagreb Zurich 31 Hades MPs Amsterdam (2) Ann Arbor Athens (2) Bologna Budapest (2) Frankfurt (2) Geneva Gent Lisbon Ljubljana London (2) Madrid Milano New York City Paris (2) Petach Tikve Poznan (2) Prague Rome Sofia Stockholm Thessaloniki Tromso Zagreb ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü ü

8. perfSONAR system: User group requirements • NOC/PERT (Performance Emergency Response Team) staff • Detailed metric information for troubleshooting • Possibility to trigger additional active tests • Project members (e.g. EGEE project) • Visualization of project network with specific views and metrics • End users • Meaningful application performance metrics • Administrative/non-technical staff • Overview functionality Level of technical experience

9. perfSONAR‘s visualization tools • Four tools in initial tool set • Customer Network Management (CNM) • Network Monitor (Nemo) • VisualperfSONAR • perfSONARUI • Designed for • Display of perfSONAR measurements • Multi-domain environments • Purposes of different user groups

10. Customer Network Management (CNM) • Shows network topology using hierarchical maps • Performance metrics are shown in attachment to links • Statistics for past time intervals • Java/JavaWebStart clients interacting with CNM server • Targeted user groups: • Projects via customizable network maps (policies, user preferences) • Administrative staff with dashboard functionality

11. CNM screenshot for Géant access network Time stamp Tree view Hierarchical maps Tree with all elements Tree with „downs“ and „warnings“ only Link metric Choice of time stamp Zoom options Caption

12. CNM views of networks ESnet DFN UNINETT PSNC SWITCH

13. CNM statistic screenshot

14. CNM future developments • Integration of more networks (topology + utilization data) • Integration of delay, jitter, and loss measurements • Retrieval of data from service for topological information (common Network Information Service) • Overview „Dashboard“

15. Network Monitor System (Nemo) • Visualization of networks as geographical maps • Includes automatical construction of map hierarchy from coordinates • Shows current and past network situation for metrics • Targeted user groups: • Primarily end users through intuitive graphical interface • Non-technical staff

16. Nemo screenshot Time selection (days) Choice of metrics Geographical map Caption for metrics Time selection (intraday)

17. VisualperfSONAR • Shows geographical traceroute of a path • Tracking of performance along a path • Concatenation of metrics • Targeted user groups • End users for performance and geographical information • NOC/PERT staff for troubleshooting along path

18. VisualperfSONAR screenshot Traceroute result as input Geographical display of traceroute Metric graphs

19. perfSONARUI • Stand alone and open source graphical user interface to query a range of perfSONAR services, currently • 14 RRD Measurement Archives (utilization data) • 1 Hades (IPPM) Measurement Archive (delay, jitter, loss measurements) • Primary user groups for perfSONARUI • NOC and PERT staff • Projects with demanding network performance requirements • End-users with some basic perfSONAR knowledge

20. perfSONARUI RRD MA visualisation Selection of Measurement Archives Traceroute output Interface information Interface navigation Interface utilization Details for a selected interface Time scale selection

21. perfSONARUI Hades MA visualisation Endpoint selection Hades box selection Measurement details One way delay IP delay variation Packet loss

22. Further project information • Project wiki provides • Brief project description • Approved deliverables • Project-related publications and presentations • Tool downloads • Contact data http://www.perfSONAR.net

23. Thank you for your attention! Any questions?