Connect. Communicate. Collaborate 1 ICISP, Cap Esterel (France), August 26-28, 2006 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

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 6 perfSONAR system: Measurement framework User Interface Layer Service Layer Measurement Point Layer User interface 1User interface 2 Domain A - servicesDomain B - servicesDomain C - services Metric 1 Measurement Point Metric 2 Measurement Point Type 1 Metric 2 Measurement Point Type 2 Domain ADomain BDomain C

Connect. Communicate. Collaborate 7 Location of RRD MAs and Hades MPs 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 13 RRD MAs Ann Arbor Athens Belgrade Berkeley Cambridge Poznan Prague Rio Sofia Thessaloniki Trondheim Zagreb Zurich

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 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

Connect. Communicate. Collaborate 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

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

Connect. Communicate. Collaborate 12 CNM views of networks ESnet SWITCH UNINETT DFN PSNC

Connect. Communicate. Collaborate 13 CNM statistic screenshot

Connect. Communicate. Collaborate 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“

Connect. Communicate. Collaborate 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

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

Connect. Communicate. Collaborate 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

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

Connect. Communicate. Collaborate 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

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

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

Connect. Communicate. Collaborate 22 Further project information Project wiki provides –Brief project description –Approved deliverables –Project-related publications and presentations –Tool downloads –Contact data

Connect. Communicate. Collaborate 23 Thank you for your attention! Any questions?