Scenario:
A Cisco 2500 series router boots in bootrom mode, has serial link
connectivity, but no images found in flash. Flash is presently in RO mode.
We attempt to bring the IOS onto the box, but fail. We believe the flash is
fubarred. Any attempts to tftp fail w/ "not programmable" We believe that
this is due to the RO limitaion of the present flash memory. There is the
limitation of the 2500 series where the image is run from flash, not NVRAM.
Is our presumption correct about the corrupt Flash module?
Excerpt from techs worklog.
I had the site console into the router and remove the aaa new-model settings.
I was then able to telnet into the router via the s0 interface. The router
was in boot mode. I checked the flash and there wasn't an image there. I
tried to TFTP a new image over but I got and error message (ERR: Device in
READ-ONLY state) so I believe that the flash was damaged by the lightning
hit. I inserted a "boot system tftp" command into the config so the router
could use the IOS image from site. I reloaded the router. I can't telnet to
it anymore, but I can ping the serial. on site the TFTP-server process is
using 2.34% of the cpu, so it appears to be sending the image over.
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