Every network engineer must know booting process of Cisco Router. There are some steps of Router booting process. Its has boostrap program for boot router.
Booting Process of Cisco Router
- When Power on the Router then First it will do POST (Power on Self Test ). The POST analyze Hardware Component of Router. It verify that all Router interface properly working or not . After the POST it will boot itself with help of Program which is store in ROM.
- After POST it search the Location of IOS in flash memory ( Internetwork OS). Bootstrap program responsible for finding IOS Program.
- After IOS found it will loaded in to RAM.
- After loading IOS it will go to NVRAM for Valid Configuration , If Configuration is available in NVRAM , then it will go to CLI mode.