Configure A Router With packet Tracer
Computer networking professionals getting started with Packet Tracer may find the interface to be flustered. Being a development program, this is only natural. However, learning how to configure a router with Packet Tracer will put professionals on the right track to mastering the program in about half an hour.
By this time, you should already have the Packet Tracer download and have it installed on your computer. Open the program and select the router from the lower left-hand corner, and drag it into the center of the sandbox screen as seen below. (Click for larger picture)
Now select connections from the same bottom left-hand corner. When you connect like-devices(Such as a router and computer) you use a crossover cable, so you should select copper cross-over cable from the second menu to the immediate right. Click on Router0, and connect the cable via FastEthernet0/0 as seen below:
Now click the PC0 and select FastEthernet. You will notice that although a link is established, it is not functional. You can tell by the red dots that are present on both ends of the connection. Once the router is configured correctly, the red dots will turn green to indicate the devices are able to communicate.
Do the same operation to PC1, only this time connect the cable to FastEthernet0/1 since FastEthernet0/0 is already taken by PC0. Your network should be similar to the one below at this point:
Configuring The Router In Packet TracerA router that is turned off doesn’t work very well! Click on your router to bring up the configuration menu and verify that it is turned on.When on, there will be a small green light below the switch as seen in the diagram.
1. Press RETURN to start the sessionThat’s it! You should now see a message similar to the following:
2. Type enable to get to privileged mode (this gives you more options in configuring the router)
3. Type config terminal (or config t for short) to access the configuration menu.
4. Type interface fastethernet0/0 to access Ethernet0/0
5. Type ip address 192.168.10.1 255.255.255.0 to assign an IP address and subnet mask to the interface.
6. Type no shutdown to open the interface up for business.
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Now we have to do the same thing for fastethernet0/1. If you don’t, there still won’t be a connection to PC1! Make sure to enter the IP address carefully as seen below:
1. Press Ctrl + Z to go back to the previous mode.At this point our router is configured properly. If you test out a ping, you will notice that the computers still don’t communicate, however!
1. Type interface fastethernet0/1
2. Type ip address 192.168.20.1 255.255.255.0
3. Type no shutdown
Configuring The Gateway In Packet TracerOur last step is to configure the gateway on each desktop computer. The gateway is the address we assigned to the Ethernet port that the desktop is connected to. It will allow the computer to interface with another network, so our ping won’t work without it!
Click on PC0 to bring up the configuration menu. Under global settings you will find a field for the gateway. Enter the corresponding IP address of the router’s interface, which is 192.168.10.1. Then click the FastEthernet tab on the left column to set the actual computer’s IP address to be on the network. Use 192.168.10.2 for the IP address, and 255.255.255.0 for the subnet mask.