|  | 3.3 | Basics of Data Flow Through LANs
| 3.3.6 |

A data packet's path through all seven layers of a LAN

In this example you will follow the path of the data generated by the Ping command. The Ping command sends some TCP/IP data to the device that you specify in the command, if the device is configured correctly, it will answer back. If you get an answer back, then you know that the device exists and that it is active. If there isn't a response, then you can assume that there is a problem somewhere between your host and the destination.

In the following example, some of the information may seem a little complex, the major purpose of this example is to illustrate data flow and the OSI protocol layers that the data flows through.
For more explanation, view -

| Web Links
| Encapsulation
| Packets
| Data Encapsulation
| Encapsulation Slide
| Encapsulation of PDUs