Submode commands

Submode commands

A global configuration mode contains many submodes. For example, if you want to configure an interface you have to enter that interface configuration mode. Each submode contains only commands that pertain to the resource that is being configured.

 

To enter the interface configuration mode you need to specify which interface you would like to configure. This is done by using the interface INTERFACE_TYPE/INTERFACE_NUMBER global configuration command, where INTERFACE_TYPE represents the type of an interface (Ethernet, FastEthernet, Serial…) and INTERFACE_NUMBER represents the interface number, since CIsco devices usually have more than one physical interface. Once inside the interface configuration mode, you can get a list of avaliable commands by typing the “?” character. Each submode has its own prompt. Notice how the command prompt was changed to HOSTNAME(config-if).