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Cisco Certifications => Tech Tips => Topic started by: certforumz on September 28, 2016, 06:17:19 AM
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The ROM monitor firmware runs when the router is powered up or reset. The firmware helps to initialize the processor hardware and boot the operating system software. You can use the ROM monitor to perform certain configuration tasks, such as recovering a lost password or downloading software over the console port. If there is no Cisco IOS software image loaded on the router, the ROM monitor runs the router.
link:
http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/rommon.html