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Ping and traceroute demonstration

Ping and traceroute demonstration. Skills : Use Ping and Traceroute and Query the Whois database IT concepts : network transit time, router hops, IP registration database, the Internet as a network of networks, backbone network.

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Ping and traceroute demonstration

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  1. Ping and traceroute demonstration Skills: Use Ping and Traceroute and Query the Whois database IT concepts: network transit time, router hops, IP registration database, the Internet as a network of networks, backbone network This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. Network connection and display characteristics • Internet concepts • Applications • Technology (connectivity) • Implications for • Individuals • Organizations • Society • Internet skills • Application development • Content creation • Text • Images • Audio • Video

  3. Ping and traceroute • Ping • measure the time for a packet to travel to a remote host and back • The server sends back an acknowledgment when the packet arrives • Traceroute • list the router hops between the client host and a remote host. • The IP address and domain name (if there is one) of each router is returned to the client

  4. Ping clients • Windows comes with a Ping client • It has a command line interface, not a graphical user interface • It is run from a DOS command line window For more on command line versus graphical user interfaces see: http://bpastudio.csudh.edu/fac/lpress//471/hout/misc/guivcli.htm

  5. Open a command line window Start > Run

  6. Command line prompt (>) with a blinking cursor The prompt shows the current directory DOS is ready for an operating system command or execution of a program – type the command or program name

  7. Ping command line Program name Remote host domain name

  8. Ping results 1 2 3 4 • The command to ping www.pepperdine.edu four times • The replies took between 36 and 38 milliseconds • No packets were lost • The average ping time was 37 milliseconds

  9. Prefixes for small quantities After these prefixes come femto, atto, zepto, and yocto, each 1,000 times smaller than the previous.

  10. A windows Ping client

  11. Traceroute command line Program name Remote host domain name Note the abbreviated program name tracert – early DOS was limited to 8-character file names.

  12. Traceroute results Hop 1: my home LAN router Hops 2-7: Verizon (my ISP) network Hops 8-10: the Yahoo LAN

  13. How do I know the IP address 130.81.17.229 and 130.81.14.98belong to Verizon?

  14. Query the Whois database for the owner of 130.81.x.x http://www.dnstools.com OrgName:    Verizon Internet Services Inc. OrgID:      VRISAddress:    1880 Campus Commons DrCity:       RestonStateProv:  VAPostalCode: 20191Country:    USNetRange:   130.81.0.0 - 130.81.255.255 

  15. A longer route Hop 1: my home LAN router Hops 2-4: Verizon (my ISP) network (a backbone ISP) Hops 5-6: Alternet (a backbone ISP) Hops 7-11: Level 3 (a backbone ISP) Hops 12-14: the Google LAN

  16. Request timed out This message indicates that the router security settings keep it from revealing its identity or the router and connection are slow.

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