INTERNAL COMPONENTS IN ROUTER

Router internal components

                                                  ROM(Read only Memory)



-It contains a bootstrap program which searches and loads the operating system

-It is similar to the BIOS of a PC

-It also contains a mini IOS for advance troubleshooting

                                                   FLASH MEMORY



-The internetwork Operating System(IOS) is stored here.

-IOS is a Cisco proprietary operating system
  NVRAM(Non Volatile Random Access Memory)



-NVRAM  is similar to a hard disk

-It is also known as permanent storage

The startup configuration is stored here

                                                    RAM(Random Access Memory)



-It is also called as the main memory

-it is atemporary storage

-the running configuration is stored here