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15 Cards in this Set

  • Front
  • Back
List the types of memory on a Cisco switch (or router)
ROM
Flash memory
NVRAM
VRAM (aka RAM)
Where is the IOS stored on a switch?
IOS is stored in Flash Memory
What is located in the switch ROM?
Switch ROM
POST
Bootstrap (boot loader)
RX-boot
ROM monitor
Where is the startup config stored?
Startup-config is in NVRAM
Where is the running-config stored?
running-config is "stored" in RAM (VRAM)
What is the configuration register?
A 16-bit value stored in NVRAM that controls how the switch/router boots
Where should the switch/router normally boot from?
Normally boot from IOS in Flash.
Config register = 0x2102
How will switch/router boot if config register = 0x2102?
0x2102 means switch boots from IOS in Flash
How will switch boot if config register = 0x2101?
0x2101 means boot from ROM.
This is a Rx-boot from mini-OS in ROM, results in prompt
router(boot)>
How will router boot if config register = 0x2100?
0x2100
Router boots to ROMMON
rommon>
ROM monitor mode
Describe the bits in the config register
Config register is 16 bits with the right-most 4-bits being the boot field.
Bit numbers 0-3
Why would router boot to the following prompt?
router(boot)>
router(boot)> prompt indicates router did a RX-boot = booted from mini-IOS in ROM.
How will router boot if config register = 0x2102?
0x2102
Router boots normally (from IOS in Flash)
Why would router boot to the following prompt?
rommon>
rommon>
ROM Monitor mode
0x2100
What command displays the config register setting?
show version
to display configuration register