4.2. Describe the operation of Cisco routers (including router bootup process, POST, router components)
To configure and troubleshoot a Cisco internetwork, you need to know the major components of Cisco routers and understand what each one does. Table 4.1 describes the major Cisco router components.
|Bootstrap||Stored in the microcode of the ROM, the bootstrap is used to bring a router up during initialization. It will boot the router and then load the IOS.|
|POST (power-on self-test)||Stored in the microcode of the ROM, the POST is used to check the basic functionality of the router hardware and determines which interfaces are present.|
|ROM monitor||Stored in the microcode of the ROM, the ROM monitor ...|