The CLI has different command modes, with specific commands available in each mode. The different command modes are:

• User exec mode - Only a few commands are available in this mode. Commands like "ping", a few of the "show" commands
• Privileged exec mode - All of the User exec commands plus all of the "show" and "debug" commands
• Global config mode - Access to all of configuration commands and addition configuration modes
• Specific sub configuration modes - interface configuration mode, router configuration mode, etc.

Commands:
Router>enable
Router#configure terminal
Router#show running-config
Router#show startup-config
Router#show version
Router#show flash
Router#copy running-config startup config

Video Tutorials

 

Some CLI basics

 

 

Configure console and VTY ports for administrative access

 

 

Configure enable password, enable secret, service password-encryption, and banner motd

 

 

Backup a configuration file and IOS bin file to a TFTP server

 

 

 

Restore a configuration file from a TFTP Server

 

 

 

Restore a startup-config file from text file

 

 

Basic switch configurations including an interface VLAN1 IP address for telnet access