Please Whitelist This Site?

I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)

If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.

If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.

Thanks for your understanding!

Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide


NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.

The Book is Here... and Now On Sale!

Read offline with no ads or diagram watermarks!
The TCP/IP Guide

Custom Search







Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Key Applications and Application Protocols
           9  TCP/IP Administration and Troubleshooting Utilities and Protocols

Previous Topic/Section
TCP/IP Communication Verification Utility (ping/ping6)
Previous Page
Pages in Current Topic/Section
1
234
Next Page
TCP/IP Address Resolution Protocol Utility (arp)
Next Topic/Section

TCP/IP Route Tracing Utility (traceroute/tracert/traceroute6)
(Page 1 of 4)

The ping utility described in the preceding topic is extremely helpful for checking whether or not two devices are able to talk to each other. However, it provides very little information regarding what is going on between those two devices. In the event that ping shows either a total inability to communicate or intermittent connectivity with high loss of transmitted data, we need to know more about what is happening to IP datagrams as they are carried across the internetwork. This is especially important when the two devices are far from each other, especially if we are trying to reach a server on the public Internet.

I described in my overview of IP datagram delivery that when two devices are not on the same network, data sent between them must be delivered from one network to the next until it reaches its destination. This means that any time data is sent from device A on one network to device B on another, it follows a route, which may not be the same for each transmission.

When communication problems arise, it is very useful to be able to check the specific route taken by data between two devices. A special route tracing utility is provided for this function, called traceroute (abbreviated tracert in Windows systems, a legacy of the old eight-character limit for DOS program names). The IPv6 equivalent of this program is called traceroute6.


Previous Topic/Section
TCP/IP Communication Verification Utility (ping/ping6)
Previous Page
Pages in Current Topic/Section
1
234
Next Page
TCP/IP Address Resolution Protocol Utility (arp)
Next Topic/Section

If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005

© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.