1. 5 December 2000 Measurements in Support of End-to-End Performance Matt Zekauskas, matt@internet2.edu Campus Workshop San Diego, CA

2. (Campus) Measurements in Support of End to End Performance12/05/00 2 Outline What’s needed Monitoring Diagnostics General plans What is available today What you can do today [Spirent: one commercial platform]

3. (Campus) Measurements in Support of End to End Performance12/05/00 3 My Bias I once ran a (corporate) campus network My recent focus: measurements I have been helping solve some wide- area performance problems Caveat: I haven’t been doing the fixing (My view is from the center)

4. (Campus) Measurements in Support of End to End Performance12/05/00 4 We Need Your Help I have probably missed something Give us the benefit of your experience fixing problems

5. (Campus) Measurements in Support of End to End Performance12/05/00 5 Vision I Ongoing monitoring to test major elements, and (some, important) end-to- end paths. Elements: gigaPoP links, peering, … Utilization Delay Loss Occasional throughput Multicast connectivity

6. (Campus) Measurements in Support of End to End Performance12/05/00 6 Vision II There are many more paths end to end than can be monitored. Diagnostic tools available on-demand (with authorization) Show routes Perform flow tests (perhaps app tests) Parse/debug flows (a-la tcpdump or OCXmon with heuristic tools)

7. (Campus) Measurements in Support of End to End Performance12/05/00 7 Problem Isolation via Divide and Conquer

8. (Campus) Measurements in Support of End to End Performance12/05/00 8 Duke - Frankfurt Duke NCREN WASHNYCM Abilene 60 Hudson 25 Broadway Teleglobe ATM Dante DFN Frankfurt Goal: 7 Mbps bi-directional UDP = Surveyor node

9. (Campus) Measurements in Support of End to End Performance12/05/00 9 The Duke-Frankfurt Problem Abilene to Dante Link Utilization http://monon.uits.iupui.edu/abilene/nycm/dante-bits.html

10. (Campus) Measurements in Support of End to End Performance12/05/00 10 JPL/Caltech – GSFC The situation Using Abilene Tuned hosts Things work locally Therefore it MUST be Abilene Tests show good flows router-router Intermediate tests point towards CA Bad fiber connection!

11. (Campus) Measurements in Support of End to End Performance12/05/00 11 In Process: Abilene Abilene will be an exemplar All measurements open Tests possible to router nodes Web-mediated on-demand measurements Throughput tests routinely through backbone …as well as existing utilization, etc.

12. (Campus) Measurements in Support of End to End Performance12/05/00 12 Eventually Tests available in automated fashion Utilize existing measurement infrastructures Spread to other backbones Spread to gigaPoPs Spread to campus edges …available throughout Internet2 infrastructure Portable monitoring toolkit

13. (Campus) Measurements in Support of End to End Performance12/05/00 13 What Is Available Today Measurement Infrastructures Non-commercial tools Commercial tools Intermediate (within Abilene) throughput tests Ad-hoc, contact matt@internet2.edu

14. (Campus) Measurements in Support of End to End Performance12/05/00 14 What is Available: Infrastructure Surveyor (one-way delay, loss, routing) www.advanced.org/surveyor On many Internet2 campuses (70 sites) Abilene presence AMP (round-trip delay, loss, routing) moat.nlanr.net/AMP (and /PMA) At even more Internet2 campuses (120 sites) PingER http://www-iepm.slac.stanford.edu/pinger/ High-energy physics focus

15. (Campus) Measurements in Support of End to End Performance12/05/00 15 Non-commercial Tools (beside netperf/iperf/ttcp/mrtg/rrdtool/…) Abilene NOC tools www.abilene.iu.edu, operational Pioneer http://pelle.internet2.edu:8080/pioneer/ Synthesis of existing infrastructure Focus: video conferencing tests

16. (Campus) Measurements in Support of End to End Performance12/05/00 16 What Is Available: Commercial Caveat: only a partial list, give me more! Spirent (Netcom/Adtech): building box for this purpose. See next talk! NetIQ (Chariot/Pegasus) Ixia (like SmartBits/Netcom) Brix Networks (like Surveyor, for ‘QoS’)

17. (Campus) Measurements in Support of End to End Performance12/05/00 17 What Can You Do Export SNMP data I can keep an “internet2 list”, would like it to be public Performance test point at campus edge Netperf or iperf, so can be from anywhere Traceroute “looking glass” Commercial (e.g., NetIQ) complements I’m willing to keep a master list Portable performance test point

18. (Campus) Measurements in Support of End to End Performance12/05/00 18 Contact Information Matt Zekauskas, matt@internet2.edu Measurements Working Group undergoing recharter http://www.internet2.edu/measurement/ End-to-end interest list listserv@internet2.edu subscribe e2e-interest

19. www.internet2.edu