E-Lab 3.1.3b - Command-line Interface Command Modes
In this lab, you will learn to enter some of the most common modes the router supports.
These include privileged EXEC, global configuration, interface configuration, line configuration, and router configuration modes.
You will learn many other configuration modes as your IOS knowledge increases.
Step 1
Enter into privileged EXEC mode.
Step 2
In privileged EXEC mode, you have full access to the router.
Enter into global configuration mode where configuration of the router occurs.
Step 3
Once in global configuration mode, there are many other configuration modes that can be accessed.
You will practice some of the common ones that are used.
First, start by entering into interface configuration mode on port serial 0.
Step 4
Interface configuration mode is used to configure interface specific information such as IP addressing.
Now that you've entered interface configuration mode, exit back into global configuration mode.
Step 5
Another common mode you will encounter when configuring a router is the router configuration mode.
In that mode you configure the process by which the router builds a routing table of network addresses.
Enter into router configuration mode using the RIP protocol.
Step 6
You've learned to exit one mode in step 4, now you will learn to exit into privileged EXEC mode directly without using multiple exit commands.
Can you figure out the command on your first try?
(A keyboard command -- which is not supported in this version of eLabs -- to immediately switch from any configuration mode into privileged EXEC mode is Ctrl-Z).
Step 7
Enter back into global configuration mode.
Step 8
Because privileged EXEC mode gives the user so much access, set a password so that only the administrator of the router can gain access to this mode.
This password is stored as an encrypted one way hash.
Use the command enable secret class.
This sets the privileged EXEC password to be class.
Note: In the field of networking, it is good to practice creating passwords using not only letters but numbers and other characters to improve security.
It is equally important to remember the passwords and store them in a secure location.
Step 9
Now that you've set the privileged EXEC password, you can also set a password for anyone who tries to connect to the router through the console port.
To do this, you must enter another configuration mode, the line configuration mode.
Step 10
Setting the password on the console line is more straightforward than the privileged EXEC password.
Use the command password cisco.
The command is password and cisco is the password.
Note: In the field of networking, it is good to practice creating passwords using not only letters but numbers and other characters to improve security.
It is equally important to remember the passwords and store them in a secure location.
Step 11
Now that you've set the password, you also need to let the router know that it should check for a password.
Use the command login.