cisco router software imagaes

carl_townshend · ‎01-08-2009

Hi all, I have a small query

With cisco routers, do they have an IOS image and a boot image?

if so what does the boot image look like, ie the name when I do show flash

cheers

Carl

aaberdeen · ‎01-08-2009

The IOS image(internet operating system) allows the router to run its images.the boot image allows the router to boot up on that image e.g

ROM: Bootstrap program is C3750 boot loader

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(19r)EA1b, RELEASE SOFTWARE (fc2)

PPML-ST1-251 uptime is 4 hours, 1 minute

System returned to ROM by power-on

System restarted at 11:30:39 UTC Mon Jan 5 2009

System image file is "flash:c3750-i5-mz.122-20.SE1.bin"

the ios image isSystem image file is "flash:c3750-i5-mz.122-20.SE1.bin

and the boot image is:

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(19r)EA1b, RELEASE SOFTWARE (fc2)

The sh ver on the device will display these messages

carl_townshend · ‎01-09-2009

Can you please explain to me the boot process ad where the files are loaded from, stored in etc ?