Using Packet Tracer To Design A Small Computer Network
January 8th, 2010
Packet Tracer is a wonderful development program put out by Cisco: a leader in computer networking hardware. Creating a basic network can be tough going, but it’s necessary in learning in order to qualify for the CCNA certification exam.
One of the most basic computer networks that you can create involves two computers and a router. Although it would seem simple in connecting the two computers to a router and calling it quits, configuring the Cisco IOS settings actually takes a bit of work. It’s quite unlike a commercial router that is widely available to consumers for home usage.
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.
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.
Troubleshooting is what computer network technicians are known for. If you find that your network isn’t working at this point, you shouldn’t be surprised. There are hundreds of reasons a network can go wrong, ranging from physical connections to input errors. The trick is to troubleshoot the symptoms of the network to see where you went wrong and how to fix it. Try to complete the troubleshooting process by yourself, as it will be more of a meaningful lesson for the future.
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 router and packet tracer.
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