Sunday, 6 March 2011

Cisco Router Startup

On startup the System Bootstrap (BootStrap) process:

  1. Runs the POST
  2.  Find IOS in flash memory (Tell router how to load by def flash)
  3. IOS load and look for a valid configuration "startup config" stored in RAM or NVRAM
  4. Once the IOS is loaded the POST information will be displayed
  5. If no startup config is found in NVRAM the Router will go into "setup mode

Acronyms

POST - Power on Self Test
IOS - Internetwork Operating System
EEPROM - Electronically Erasable Programmable Read Only Memory
NVRAM - Nonvolatile Read Only Memory

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