http://sdu.ictp.it/lowbandwidth/

Navigating PingER

Les Cottrell – SLACPresented at the Optimization Technologies for Low-Bandwidth Networks, ICTP

Workshop, Trieste, Italy, 9-20 October 2006 http://www.slac.stanford.edu/grp/scs/net/talk06/pinger-navig.ppt

Partially funded by DOE/MICS Field Work Proposal on Internet End-to-end Performance Monitoring (IEPM), also supported by IUPAP

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Get ready Bring up terminal window so can try some commands Bring up the presentation so can click on links:

www.slac.stanford.edu/grp/scs/net/talk06/diag-demos.ppt

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Aim

Traceroute PingER ViPER PingWorld Locating Hosts TULIP

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Traceroute examples

Try: 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

Do a man traceroute to understand the ! Codes, also see RFC1812

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Help yourself to PingER data Main PingER site:

www-iepm.slac.stanford.edu/pinger PingER 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 sortingentries colored by quality

Click on ? For more information on hosts Help www-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

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PingER continued Click 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

Change: 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&dataset=hep&percentage=any

Can download for Excel & further analysis Pinger Group History table

www-iepm.slac.stanford.edu/cgi-wrap/table.pl

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Exec style plots www.slac.stanford.edu/comp/net/wan-mon/

pingerplots/trendline/trendline.jnlp Right click on graph area, click on add/remove

Trendlines/points Also note:

write parameters to csv file Toggle log/linear

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Viz for PingER (ViPER) www.slac.stanford.edu/comp/net/wan-mon/viper/

Select From & To, metric and Show linksColored by performance, shows regions, mouseoverCan select multiple To’sCan show plots

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PingWorld www-iepm.slac.stanford.edu/tools/pingworld/ Can ping from your host to sites around the world Needs Java Webstart

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Locating HostsAS gives information on ‘ISPs’ running networks Perl script to get ASN information:

confluence.slac.stanford.edu/display/IEPM/ASN.pl Tricky example: find ui.edu.ng

Nslookup/dig gives IP addr = 69.33.174.209AKA fallback.skannet.com

http://www.geoiptool.com/ says it is N. California So does www.ip2location.com/free.asp (69.33.174.209) RTT from SLAC is ~200ms!

www.slac.stanford.edu/cgi-bin/traceroute.pl?target=ui.edu.ng&function=ping

http://www.fixedorbit.com/search.htm shows AS23215http://bgp.potaroo.net/cidr/autnums.html shows AS23215 in

Pleasanton California From New York 20ms

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TULIP/Octant Octant http://www.cs.cornell.edu/~bwong/octant/

Geolocation based on RTTs, excellent for US www.slac.stanford.edu/comp/net/wan-mon/tulip

Attempts to work for Developing Regions Needs Java Webstart Try for www.slac.stanford.edu 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)

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Web page examples: Case studies

http://www.slac.stanford.edu/grp/scs/net/case/html/ http://e2epi.internet2.edu/case-studies/

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More Information Tutorial on monitoring

www.slac.stanford.edu/comp/net/wan-mon/tutorial.html RFC 2151 on Internet tools

www.freesoft.org/CIE/RFC/Orig/rfc2151.txt Network monitoring tools

www.slac.stanford.edu/xorg/nmtf/nmtf-tools.html www.caida.org/tools/taxonomy/

Network Performance Tools: an I2 Cookbook e2epi.internet2.edu/network-perf-wk/tools-cookbook.pdf

Network Monitoring sites www.slac.stanford.edu/comp/net/wan-mon/netmon.html