Connecting A Computer Network With Packet Tracer
Posted on January 8th, 2010
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.
The gateway address is also very important: it allows a computer to connect to a network. The gateway address is configured on the desktop, and it’s value is the same IP address as the Ethernet interface that it is connected to. Without the gateway, information wouldn’t have a way of getting from one network to another. It’s one of the most common rookie mistakes to accidentally leave the gateway address blank.
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
A basic network is easy to setup in theory, but harder to actually create. Confusing Cisco IOS commands and problems such as a faulty cable is enough to give anyone a hard time. Internet tutorials and troubleshooting tactics are a good solution if you have hit a stumbling block.
Learn more about packet tracer and packet tracer.
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