Could anyone please explain me what the boot bootldr and boot bootstrap are? And how do they different from the boot system command?
I did not understand the description of these commands in the Cisco command reference document.
Thanks a lot,
Boot system is used to specify the system image that loads at startup i.e the full IOS image that system will load.
boot bootldr command is used to specified a boot loader image which is an image with only booting featues and few limited commands, this image is like a safe mode for the system where we fall back on if system is unable to boot from main image.
bootstrap is the minimum software that is required to recongnize and run the hardware. It comes both in software and hardwares with the software.Like in cat 6K on Sup's is a special hardware with an image on it.