navigating pinger les cottrell slac presented at the optimization technologies for low-bandwidth...
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Slide: 3 Les Cottrell, SLAC Aim uTraceroute uPingER uViPER uPingWorld uLocating Hosts uTULIPTRANSCRIPT
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
Slide: 2Les Cottrell, SLAC
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