1. connect communicate collaborate PERT workshop Bartek Gajda gajda@man.poznan.pl Poznan Supercomputing and Networking Center (PSNC) PIONIER (Polish NREN) TERENA NETWORKING CONFERENCE 2010 30 May 2010

2. connect communicate collaborate 2 PERT workshop Introduction to PERT and eduPERT for newcommers Review of the current status Technical presentations and discussion from PERT teams 15.30 Coffee break Technical presentations and discussion part 2 17.30 End Agenda

3. connect communicate collaborate 3 PERT workshop Introduction to PERT and eduPERT for newcommers Review of current status Technical presentations and discussion from PERT teams 15.30 Coffee break Technical presentations and discussion part 2 17.30 End Agenda

4. connect communicate collaborate 4 What is PERT ? PERT – The Performance Enhancement and Response Team a virtual organization made of networking experts who help end-users diagnose and solve network performance issues.

5. connect communicate collaborate 5 What is PERT ? (2) End-user will contact the PERT either directly or through their standard IT support channels when their applications are not working normally PERT IT NOC PERT

6. connect communicate collaborate 6 What is PERT ? (3) Typical areas of concern for users are: low throughput, slow response time for interactive applications and degradation (noise) To diagnose such problems a PERT must consider the properties of the complete end-to-end path One of the main functions of the PERT is to ask intelligent questions of those who have systems on that path, including end-users, system administrators, and network operators.

7. connect communicate collaborate 7 Network Performance Problems Historically: Local (LANs) networks were faster than long distance circuits (the “wide-area”) have been the bottleneck in a network Today the difference in data rate between LANs and WANs is much reduced, The capacity of WAN - long distance circuits has significantly increased End-to-end performance bottle-necks may now occur at any point in a system – end-system (application, OS, hardware), LAN or WAN It is becoming more and more difficult for a non-expert end-user to diagnose their network performance issues

8. connect communicate collaborate 8 Network Performance Problems The TCP performance problems had a wide variety of resolutions *: 39% of the causes were solved by applying different network routing. 27 % were related to TCP tuning on the end host. 14 % were unidentified. 11% were related to hardware issues. 9% were solved by other solutions like resolving DNS performance problems. * Milestones MS2.3.7 and 2.3.8: Specification of the Backbone and Campus PERT Support Monitoring Infrastructure

9. connect communicate collaborate 9 Origins of the PERT Conception of the PERT … Jan 01 Internet2 Meeting Performance Enhancement and Response Team To provide a support structure to investigate and resolve problems in the performance of applications over computer networks Comparable to CERT structure Realization of the PERT … Dec 2002 TERENA meeting GARR, TERENA, DANTE, SWITCH, CESnet, HEAnet and UKERNA committed to a practical trial of a basic PERT

10. connect communicate collaborate 10 The GEANT PERT 2002-2004 Informal, unregulated access to PERT; anybody can request PERT’s help PERT communicated via e-mail list Primary purpose of investigation was to improve PERT’s knowledge and experience Problems were addressed on a best efforts basis No dedicated Monitoring tools RoundUp tracking system (off-the-shelf) used

11. connect communicate collaborate 11 The GEANT PERT 2002-2004 The first practical implementation was done by a group of European National Research and Education Networks (NRENs) and DANTE Successful pilot service in the GÉANT project Centralized GN2 PERT concept evolved into federated eduPERT

12. connect communicate collaborate 12 What is eduPERT? Centralized GN2 PERT concept evolved into federated eduPERT Combines the independent PERTs: National (NREN) Local (Universities) Project PERTs Support of central services: Registration - registers new PERTs Accreditation - provides application forms to PERTs seeking accreditation and awards and/or revokes accreditation according to agreed policy Workshop, meetings Knowledge Base Reporting - compiles and submits monthly reports on eduPERT activity Training

13. connect communicate collaborate 13 The benefits of joining eduPERT Access to the knowledge of experienced and/or qualified network engineers Access to advice about TCP/IP protocols, network topology, network status and history, adjacent networks (peers and customers) and read access to all network elements. Registered PERTs can access private contact details for all other registered and accredited PERTs, and can quickly and easily contact those engineers best placed to help investigate network performance issues. Accredited PERTs can request specific technical information from other accredited PERTs and they have greater privileges when running multi-domain network performance tests. eduPERT is a simple, unconstrained structure that maximises resources and creativity, with no restrictions on how member PERTs interact with its users, or what tools and procedures must be used Training

14. connect communicate collaborate 14 PERT workshop Introduction to PERT and eduPERT for newcommers Review of current status Technical presentations and discussion from PERT teams 15.30 Coffee break Technical presentations and discussion part 2 17.30 End Agenda

15. connect communicate collaborate 15 The GEANT PERT 2009 - now List of participating PERTs ARNES (Academic and research network of Slovenia) CSC (Finnish IT center for science administered by the Ministry of Education) SWITCH* (Swiss Education Network) RESTENA (Réseau Téléinformatique de l'Education Nationale et de la Recherche) PIONIER (Polish Optical Internet) FCCN (Fundação para a Computação Científica Nacional) GÉANT2 PERT (GÉANT2, the high bandwidth, pan-European research network) DFN (German Research and Education Network) * accredited PERT

16. connect communicate collaborate 16 eduPERT website - edupert.geant.net

17. connect communicate collaborate 17 STRUCTURE About What is a PERT What is eduPERT The benefits of joining eduPERT Services eduPERT Services GÉANT Services eduPERT Knowledge Base Links to The PERT Knowledge base hosted by SWITCH Participating PERTs List of PERTs Participating PERTs details (more details available only after login for registered participants ) eduPERT website structure - edupert.geant.net

18. connect communicate collaborate 18 eduPERT Knowledge Base Performance basics: How to report a performance problem, user- perceived performance (responsiveness, throughput, reliability), Why latency is important, the "Wizard Gap“ Network performance metrics: OWD, RTT (bandwidth*delay product and "Long Fat Networks" (LFNs)), delay varation (Jitter), loss, reordering, MTU/Path MTU Network protocols Application protocols PERT Tools NREN tools and statistics: GÉANT, SWITCH (CH), PSNC (PL), HEAnet (IE), ISTF (BG), FCCN (PT), IUCC (IL), HUNGARnet (HU), RENATER (FR) Performance Case Studies PERT Case Histories (old) …

19. connect communicate collaborate 19 eduPERT within GN3 – latest update Website moved to new doman edupert.geant.net Discussion list reactivated Open for subscribing Publicly available archive http://mail.geant.net/mailman/listinfo/pert-discuss Documents for the community Milestones MS2.3.7 and 2.3.8: Specification of the Backbone and Campus PERT Support Monitoring Infrastructure

20. connect communicate collaborate 20 eduPERT Cases - statistics Apr -09 May -09 Jun- 09 Jul- 09 Aug- 09 Sep- 09 Oct- 09 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 New252147880774 Open6141361415 16149 8 Closed233036772682 Total (open+ closed) 81716 1721222316152210

21. connect communicate collaborate 21 eduPERT – plans for the future Additional 10 existing PERTs become registered part of eduPERT: AMRES BRNET CESNET FUNET GARR GRNET LITNET HUNGERNET RENATER SANET eduPERT website restructured, extended with new materials (brochure) and linked to GN3 portal Collaboration with existing and potential national and organisational PERTs established (e.g. Internet2, LHCOPN, DEISA, RedClara)

22. connect communicate collaborate 22 TERENA NREN Compendium 2008 http://www.terena.org/activities/compendium/2008 -> Network Connectivity and services AMRESSerbiaAkademska mreža Srbije BASNETBelarusByelorussian Academy of Sciences Network BRENBulgariaBulgarian Research and Education Network CERISTAlgeriaAlgerian Research Network CESNETCzech Republic FunetFinland GARRItaly GRENAGeorgiaGeorgian Research and Educational Networking Association GRNET S.A.Greece LITNETLithuaniaAcademic and Research Network in Lithuania NIIF/HUNGARNETHungaryHungarian Research and Education Network RBNet/RUNNetRussiaRussian Backbone Network RENATERFranceNational Telecommunication network for Technology Education and Research SANETSlovakiaSlovak Academic Network PERT team is present within following NRENs (but not registered in eduPERT):

23. connect communicate collaborate 23 TERENA NREN Compendium 2008 http://www.terena.org/activities/compendium/2008 -> Network Connectivity and services PERT team is absent within following NRENs, but plan to deploy: AARNetAustraliaAustralia's Academic and Research NetworkWithin 3 years ACOnetAustriaAustrian Academic Computer NetworkWithin 3 years BELNETBelgiumWithin 3 years CARNetCroatiaWithin 1 year CYNETCyprusWithin 3 years DFNGermanyDeutsche ForschungsnetzWithin 1 year IUCCIsraelInter University Computation CenterWithin 3 years MARNetWithin 1 year MARWANMoroccoWithin 1 year MRENMontenegroWithin 3 years NI-CDenmarkWithin 1 year NRENNepalNepal Research and Education NetworkWithin 1 year RedIRISSpainRedIRIS Network Management CentreWithin 1 year RENAMMoldovaResearch and Educational Network of MoldovaWithin 3 years RHnetIcelandThe Icelandic University Research NetworkWithin 3 years RoEduNetRomaniaRomanian National Research and Education NetworkWithin 1 year ULAKBIMTurkeyWithin 3 years UNI-CDenmarkWithin 1 year UNINETTNorwayWithin 3 years UoM/RicerkaNetMaltaWithin 3 years

24. connect communicate collaborate 24 PERT workshop Introduction to PERT and eduPERT for newcommers Review of current status Technical presentations and discussion from PERT teams 15.30 Coffee break Technical presentations and discussion part 2 17.30 End Agenda

25. connect communicate collaborate 25 PERT workshop Technical presentations