In this lab, we explored configuring IP addresses, interface descriptions, and enabling interfaces using the Cisco CLI. Below is an overview of the lab.
The first step was to set the hostname for R1. We selected R1 and entered the CLI, where we used the “enable” and “configure terminal” commands to navigate to R1’s configuration mode. Then, we entered the “hostname” command to name the router R1.
In the next step, we used the “show” command to view the list of R1’s interfaces. We noticed that the status was marked as “administratively down,” representing the L1 functionality of the router, which was disabled by default. The protocol column represented the L2 status of the interface, which could not operate because L1 was shut down. Our goal was to configure these interfaces so that they showed “up” in both columns.
To configure an interface, we used the “interface” command followed by the specific interface we wanted to modify, for example, “interface g0/0.” Then, we used the “IP address” command followed by the IP and subnet mask to assign it to that interface. Finally, we used the “description” command to add the location of the interface, such as “SW1.”
After configuring every interface on the router, we viewed the running configuration and saved it using the “show running-config” and “write” commands.
Finally, to configure the IP address for PC1, we navigated to the “config” tab and the FastEthernet0 tab, which was PC1’s NIC. We assigned the IP address in this tab and then ran a ping test from PC1’s CLI.
In conclusion, this lab provided valuable hands-on experience in configuring IP addresses on router interfaces, setting interface descriptions, and enabling interfaces with the “no shutdown” command within the Cisco CLI. The successful ping test and observation of ARP in action further demonstrate the importance of configuring IP addresses and subnet masks in a network. This experience has helped deepen my understanding of the Cisco CLI and the crucial role it plays in setting up and maintaining a functional network.
We have successfully completed the Configuring IP Addresses Lab as outlined by Jeremy’s IT Lab. This lab was a part of his Free CCNA 200–301 course which can be accessed on his YouTube channel here — https://www.youtube.com/watch?v=H8W9oMNSuwo&list=PLxbwE86jKRgMpuZuLBivzlM8s2Dk5lXBQ.
