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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

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.

network connection and display characteristics
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
ping and traceroute
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
ping clients
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

command line prompt with a blinking cursor
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

ping command line
Ping command line

Program name

Remote host domain name

ping results
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
prefixes for small quantities
Prefixes for small quantities

After these prefixes come femto, atto, zepto, and yocto, each 1,000 times smaller than the previous.

traceroute command line
Traceroute command line

Program name

Remote host domain name

Note the abbreviated program name tracert – early DOS was limited to 8-character file names.

traceroute results
Traceroute results

Hop 1: my home LAN router

Hops 2-7: Verizon (my ISP) network

Hops 8-10: the Yahoo LAN

how do i know the ip address 130 81 17 229 and 130 81 14 98 belong to verizon
How do I know the IP address 130.81.17.229 and 130.81.14.98belong to Verizon?
query the whois database for the owner of 130 81 x x
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 

a longer route
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

request timed out
Request timed out

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