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Programs that are meant for engineering professionals never are easy to learn- but practice makes perfect! Packet Tracer is a good example of a tough program released by Cisco, of which even making a small computer network can pose a challenge.

Having a networked based on a hub is easy enough- there isn’t any significant configuration. Putting a router in the network is a different story, however, since it will separate networks. Because it does so, any network containing a router will have at least two different network addresses for proper communication. Configuring them is just a matter of assigning the correct addresses and settings.

Constructing the network will take two crossover cables and a console cable. The two crossover cables will connect each desktop to the Ethernet ports of the router, while the console cable will connect one of the computers to the router for configuring. Be sure that the cable you are using isn’t a straight-through when using your Ethernet cable, as this type of cable is reserved for unlike devices.

The IP addresses you assign will be the logic of the operation. It’s up to you which network numbers and addresses you use, but they must follow a certain convention in order to work. You will be using at least four IP addresses total, counting your two desktop machines and two Ethernet ports on the router. Assign each Ethernet port and IP address that corresponds to a certain network. If you assign both to the same network, you will quickly see the configuration won’t work.

After configuring the IP addresses, you will need to configure what is called a gateway address. The gateway address is simply the IP address of the Ethernet port that a computer is connected to. The gateway tells a computer where to send and receive information that comes across the network. This address is edited on the desktop in the IP address settings. Without it, information would never reach its target destination.

Last, we get to test the network we just created. By sending a packet of data through a ping, we can verify that one computer can contact another computer on a completely different network. From one computer, type in the ping command and the IP address of the separated computer. If the result times out, it means you have either configured the router improperly or have faulty cables. You will find that most often it’s a problem regarding cables and network topology.

Final Thoughts

Packet Tracer makes the process of designing a network so easy, that it’s hard to imagine what computer network operators had to endure in the past. More tutorials and information can be downloaded from the Internet if you feel that you would like to learn more about setting up small networks.

Learn more about packet tracer and packet tracer router.

This entry was posted on Friday, January 8th, 2010 at 4:46 pm and is filed under Communications, Computers, Reference And Education, Technology. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.