Ccna routing and Switching Complete Study Guide

Overview of Router Modes

To configure from a CLI, you can make global changes to the router by typing 

configure 

terminal

 or just 

config t

. This will get you into global configuration mode where you 

can make changes to the running-config. Commands run from global configuration mode 

are predictably referred to as global commands, and they are typically set only once and 

affect the entire router.

Type 

config

 from the privileged-mode prompt and then press Enter to opt for the 

default of 

terminal

 like this:

Switch#

config

Configuring from terminal, memory, or network [terminal]? [

press enter]

Enter configuration commands, one per line.  End with CNTL/Z.

Switch(config)#

At this point, you make changes that affect the router as a whole (globally), hence the 

term global configuration mode. For instance, to change the running-config—the current 

configuration running in dynamic RAM (DRAM)—use the 

configure terminal

 com-

mand, as I just demonstrated.

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Command-Line Interface (CLI)