Role-based CLI Configuration :

Step1)active aaa
(config)# aaa new model

Step2) Set enable secret
(Config)# enable secret <num>

Step3) create root view
# enable view
Pass: <enable secret pass>

Step4) create view
(Config)# parser view <name>
(Config-view)# secret <num>
(Config-view)# commands <mode> include <name>

Login by parser view created :
# enable view <name>
Pass : <num>

PARSER-6-VIEW_SWITCH: successfully set to view

How to stop a command - make it stop running (such as ping) :

Hold down ——> Cntrl+shift+6

Changing the Configuration Register Settings :

Step1) Connect a terminal or PC to the router console port. If you need help, see the hardware installation guide for your router

Step2) Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, no parity, and 2 stop bits.

Step3) Power on the router.
If you are asked whether you would like to enter the initial dialog, answer no: Would you like to enter the initial dialog? [yes]: no

Step4) After a few seconds, the user EXEC prompt (Router>) appears.
Enter privileged EXEC mode by typing enable and, if prompted, enter your password:
Router> enable Password
Pass : <num>

Step5) To change the configuration register settings, enter the config-register value command, where value is a hexadecimal number preceded by 0x:
(config)# config-register 0xvalue

Step6) Save the configuration changes to NVRAM:
Router# copy run start