IOS Basic Features, Command Modes, Tips and Tricks - connorethanjay/CCNP-Enterprise-Preparation GitHub Wiki

Command Modes in IOS and IOS XE

These modes are accessed in a sequence, but you can navigate between modes via specific commands.

• User EXEC mode
  • You begin in this mode, and can perform basic tasks. It is limited in permissions.

Router>

• Privileged EXEC mode
  • This mode can be accessed directly from User EXEC via the enable command, gives access to more advanced commands, and should be protected with a case-sensitive password. User EXEC commands are a subset of Privileged EXEC commands.

Router#

• Global configuration mode
  • This mode can be accessed directly from privileged exec mode via the configure terminal command. This is used to configure the settings of the device, eg. routing or the hostname.

Router(config)#

• Specific configuration modes (eg, Interface configuration)

Router(config-if)#

• Configuration submodes (eg. Subinterface configuration)

Router(config-subif)#

Context-sensitive help commands

• To view all available commands in a mode via the context sensitive help commands, enter the ? command

Tips and Tricks

• To run an exec-level command in the config-level mode, use the "do" command.

Router(config)# do show ip interface brief