CCNA 4.2 Cisco Command Line Interface (CLI)

• CLI can be accessed by pressing "Enter" after router's boot up
• User mode allows user to view statistics data of the router
• Privileged mode allows user to view and change router parameter
• Configure terminal (config t) command allows user to be in global config mode and make changes to running-config (config running in DRAM)
• Configure memory (config mem) command allows user to make changes to startup-config (config stored in NVRAM)
• Configure network (config net) command allows user to make changes to router configuration stored on a TFTP host
• Config t, mem, net commands are all used to config info into RAM on router
• Interface command on global config mode allows user to make changes to an interface
• Subinterfaces allow user to create logical interfaces within the router
• Line command allows user to configure user-mode passwords
• Router term:

• ? command on any prompt allow user to obtain a list of commands on that prompt
• Router-command history:

• Show version command allows user to obtain basic configuration for system hardware, software version and boot image