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TCP/IP Guide by Charles M. Kozierok

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TCP/IP Route Tracing Utility (traceroute)

The ping utility is extremely helpful for checking whether two devices are able to communicate with 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, administrators 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 you 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 ...

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