CLI command modes

CLI command modes
3.1.1 This page will discuss some features that are available from global configuration mode.


All CLI configuration changes to a Cisco router are made from global configuration mode, which is sometimes called global config. Global config is the primary configuration mode. Specific modes are used for various configuration changes, but these modes are all subsets of the global configuration mode.

Global configuration mode commands are used in a router to apply configuration statements that affect the system as a whole. The following command moves the router into global configuration mode and allows entry of commands from the terminal:

Note:

The prompt changes to indicate that the router is now in global configuration mode.

Router#configure terminal

Router(config)#

The prompt will change to indicate that the router is in global configuration mode. Here are a few of the modes that can be entered from global configuration mode:

• Interface mode
• Line mode
• Router mode
• Subinterface mode
• Controller mode

When these specific modes are entered, the router prompt changes to indicate the current configuration mode. Any configuration changes that are made will apply only to the interfaces or processes covered by the particular mode.

Type exit from one of the specific modes to return a router to global configuration mode. Pressing Ctrl-Z leaves the configuration modes completely and returns the router to privileged EXEC mode.

The next page will teach students how to configure a router name in global configuration mode.