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Cisco 3660 error message: NVRAM area bad

I have a Cisco 3660 and sometimes it just hangs and I cannot access it through telnet and when connecting through console it is in the Rommon> mode. I modify the conf register with "config" command and reset it. Sometimes it works and sometimes it doesn't. The error messages are "NVRAM area bad."
When you are able to get into privileged mode, copy the config to a file to save it. Then do a "write erase" on the console. This erases the NVRAM. I would then reboot the router and copy the config file back into it. Make sure to end with a "write mem". This might be a solution for your problem; I do believe that your NVRAM will eventually die. Sometimes clearing and rewriting NVRAM solves these kinds of problems. If not, then I think you might want the swap the router.
This was last published in July 2002

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