To program a Cisco router we are going to use a Command Line Interface or CLI. Basically what that means is there is no pretty user interface with graphics and buttons, we will just be typing commands. The good thing about using a CLI is that once you get past the initial learning curve you can accomplish a lot more in less time.
I’m going to skip a lot of details right now like how to connect to a Cisco router and some other steps because I want to take the time to explain them in more detail later.
What we are going to do today is configure IP address on two different ethernet ports on a Cisco 2600 router. Don’t worry about understanding everything right now, the whole point in me showing you this right now is so that you can see now what I will be talking about later in order for you to understand it better.
Here are the commands that I used to configure an IP Address for Interface Ethernet 0/0:
Router1> enable
Router1# config t
Router1(config)# interface ethernet 0/0
Router1(config-if)# ip address 192.168.1.2 255.255.255.0
Router1(config-if)# no shutdown
Router1(config-if)# ctrl-z
And now the commands that I used to configure and IP Address for Interface Ethernet 0/1:
Router1# config t
Router1(config)# interface ethernet 0/1
Router1(config-if)# ip address 192.168.2.1 255.255.255.0
Router1(config-if)# no shutdown
Router1(config-if)# ctrl-z
That is all you have to do for right now to get the router to work. Next I’m going to show you how to configure the Cisco Switch and how to configure the IP Address on all of the computers. That way we can get a fully functioning network and we can continue to learn everything that you need to know for the Cisco ICND1 Exam.
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