The ROM Monitor (ROMMON) is a bootstrap program that (when functioning properly) initializes the hardware and boots the Cisco IOS XE software when you power on or reload a router. In the CLI, the switch prompts will display as Switch:
to indicate that you are in this mode. This may happen if the switch detects an issue with the bin file or the patch linking to the file. I find that I need to remember how to recover a Switch with an IOS Tar File to resolve the issue.
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Stephan Pringle
Technology Support Specialist at Sipylus
About The Author: Stephan Pringle is an Information Technology Support Specialist. He covers hardware and software and provides tips for you to troubleshoot and repair issues on your own. In his spare time, he writes articles about the State of New York on his Hackintosh and HackBook and that has helped him to become the top contributor of the New York City section of Yahoo! Answers.
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