Navigating PingER Les Cottrell – SLAC Presented at the Optimization Technologies for Low-Bandwidth Networks, ICTP Workshop,

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Presentation transcript:

Navigating PingER Les Cottrell – SLAC Presented at the Optimization Technologies for Low-Bandwidth Networks, ICTP Workshop, Trieste, Italy, 9-20 October Partially funded by DOE/MICS Field Work Proposal on Internet End-to-end Performance Monitoring (IEPM), also supported by IUPAP

Slide: 2 Les Cottrell, SLAC Get ready uBring up terminal window so can try some commands uBring up the presentation so can click on links:

Slide: 3 Les Cottrell, SLAC Aim uTraceroute uPingER uViPER uPingWorld uLocating Hosts uTULIP

Slide: 4 Les Cottrell, SLAC Traceroute examples uTry: traceroute ba59-97-hsrp-144.nrl.navy.mil #or tracepath traceroute –I ba59-97-hsrp-144.nrl.navy.mil traceroute pheezer.uits.iupui.edu traceroute –I pheezer.uits.iupui.edu uDo a man traceroute to understand the ! Codes, also see RFC1812

Slide: 5 Les Cottrell, SLAC Help yourself to PingER data uMain PingER site: www-iepm.slac.stanford.edu/pinger uPingER results: www-iepm.slac.stanford.edu/cgi-wrap/pingtable.pl Try using table to choose from=ZA.TENET.AC.ZA to=WORLD, metric==minimum-RTT, tick-type=last 120 days Then click on Load into table Note: hostnames written in reverse form for improved sorting entries colored by quality Click on ? For more information on hosts Help www-iepm.slac.stanford.edu/pinger/tools/table.htmlwww-iepm.slac.stanford.edu/pinger/tools/table.html Scroll right to see more countries, regions Summary table at bottom Can sort by clicking on headings

Slide: 6 Les Cottrell, SLAC PingER continued uClick on name of node, eg. TW.SINICA.EDU.N1 Change first month to Aug (can also choose metric etc.) Scroll down click on Generate Graphs uChange: From=IT.ICTP.N1, To=World, Tick=daily www-iepm.slac.stanford.edu/cgi- wrap/pingtable.pl?file=packet_loss&by=by- site&size=100&tick=daily&from=IT.ICTP.N1&to=WORLD&ex=none&data set=hep&percentage=any www-iepm.slac.stanford.edu/cgi- wrap/pingtable.pl?file=packet_loss&by=by- site&size=100&tick=daily&from=IT.ICTP.N1&to=WORLD&ex=none&data set=hep&percentage=any uCan download for Excel & further analysis uPinger Group History table www-iepm.slac.stanford.edu/cgi-wrap/table.pl

Slide: 7 Les Cottrell, SLAC Exec style plots uwww.slac.stanford.edu/comp/net/wan- mon/pingerplots/trendline/trendline.jnlpwww.slac.stanford.edu/comp/net/wan- mon/pingerplots/trendline/trendline.jnlp uRight click on graph area, click on add/remove Trendlines/points uAlso note: write parameters to csv file Toggle log/linear

Slide: 8 Les Cottrell, SLAC Viz for PingER (ViPER) uwww.slac.stanford.edu/comp/net/wan-mon/viper/ Select From & To, metric and Show links Colored by performance, shows regions, mouseover Can select multiple To’s Can show plots

Slide: 9 Les Cottrell, SLAC PingWorld uwww-iepm.slac.stanford.edu/tools/pingworld/www-iepm.slac.stanford.edu/tools/pingworld/ uCan ping from your host to sites around the world uNeeds Java Webstart

Slide: 10 Les Cottrell, SLAC Locating Hosts AS gives information on ‘ISPs’ running networks uPerl script to get ASN information: confluence.slac.stanford.edu/display/IEPM/ASN.pl uTricky example: find ui.edu.ng Nslookup/dig gives IP addr = AKA fallback.skannet.com says it is N. California So does ( ) RTT from SLAC is ~200ms! bin/traceroute.pl?target=ui.edu.ng&function=ping bin/traceroute.pl?target=ui.edu.ng&function=ping shows AS shows AS23215 in Pleasanton California shows AS23215 From New York 20ms

Slide: 11 Les Cottrell, SLAC TULIP/Octant uOctant Geolocation based on RTTs, excellent for US uwww.slac.stanford.edu/comp/net/wan-mon/tulipwww.slac.stanford.edu/comp/net/wan-mon/tulip Attempts to work for Developing Regions Needs Java Webstart Try for File=>Sort Min_RTT Visualization=>Plot IP on Map DiscoveryStatistics=>MinRTT plots Double click on line in Ping Results to do ping Double click on line in Traceroute Reports to make trace Try ui.edu.ng (replicated)

Slide: 12 Les Cottrell, SLAC Web page examples: Case studies uhttp:// uhttp://e2epi.internet2.edu/case-studies/

Slide: 13 Les Cottrell, SLAC More Information uTutorial on monitoring uRFC 2151 on Internet tools uNetwork monitoring tools uNetwork Performance Tools: an I2 Cookbook e2epi.internet2.edu/network-perf-wk/tools-cookbook.pdf uNetwork Monitoring sites