Using Packet Tracer has allowed computer networking professionals to design networks, teach ideas and concepts, and save time on brainstorming. Although it’s a wonderful tool, making a simple network is a challenge if you aren’t familiar with the program.

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.

The running configuration of the router can be accessed by using a console cable and setting up a connection from one of the desktop machines. The console cable isn’t necessary for Packet Tracer, but if you plan on programming a real router you will definitely need one. You will also need a crossover cable so that you may connect the desktop machines to the router’s individual Ethernet ports.

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.

Even with all of the IP address information in place, and the Ethernet ports configured, there is still something missing. We haven’t installed a gateway address on the desktop machines. Without a gateway address, the computer won’t be able to send and receive information over the network. It’s simple to assign: the gateway address is going to be the IP address of the Ethernet interface that is connected to the desktop in question.

We can confirm that the network was set up properly by pinging a computer from another. As long as you did everything correctly, you should get a success message when using the command line interface. If you get an error regarding a time out, odds are you have input the wrong IP address information or forgot to open the Ethernet ports of the router. Troubleshooting is a valuable skill to have, so try to fix the problem yourself before asking for help if you get stuck on a problem.

In Conclusion

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 tutorials and packet tracer router.