LAB 2-2 Cisco Router Configuration Modes
There are different configuration modes of a Cisco router. Each mode has different set of commands to execute. You can tell which configuration mode you are in by watching the CLI prompt. Some of the modes that we use frequently are show below:
- User Exec Mode
- Privilege Exec Mode
- Global Configuration Mode
- Interface Mode
1) Entering into User Exec Mode /Look only Mode/Line Mode
The first mode is User Exec Mode or Look only mode. This is the default mode of the router. This is good mode to have users who may only see configuration but should not be allowed to change it. User can type harmless EXEC commands only.
2) Entering into Privilege Exec Mode/Enable Mode
The enable command allows us to enter into Privilege Exec Mode where one can have more options for show and other commands.
3) Entering into Global Configuration Mode
Router# configure terminal
This command allows us to enter into Global Configuration Mode where one can configure a range of commands.
4) Entering into Interface Mode
Router(config)# interface fastEthernet 0/0 OR Router(config)# interface Serial 1/ 0
This command lets you configure all parameters that are associated with an interface.
5) Exiting from Interface Mode
6) Exiting from Global Configuration Mode
Router(config)#exit May 21 04:15:12.655: %SYS-5-CONFIG_I: Configured from console by console Router#
6) Exiting from User Exec Mode
Router# exit OR
Router con0 is now available
Press RETURN to get started.
TIP: When you use EXIT or LOGOUT command at enable mode, it will exit you from enable mode as well as terminates your session. Consequently, it will clear the history buffer as well. If you wish to go to user exec mode without terminating session, use the DISABLE command at enable mode.
Router# disable Router>
The following figure depicts the complete process of entering and exiting from interfaces