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how to boot cisco switch from Rommon using tftp?

Posted on 2008-06-17
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Last Modified: 2008-06-26
I have a cisco switch with a bad IOS image, it would only boot to rommon.  I formatted the flash and tried using xmodem to copy the new image to flash.  After a couple failures, I realized that the ONLY images that Cisco offers for this device only are TOO BIG for the flash for some reason?

Is there a way to boot the image from a tftp server while in Rommon mode? I have typed in the following:

set IP_ADDRESS 172.16.2.251
set IP_SUBNET_MASK 255.255.255.0
set DEFAULT_GATEWAY 172.16.2.254
set TFTP_FILE c2900xl-c3h2s-mz.120-5.WC17.bin
set TFTP_SERVER 172.16.2.1

I then type boot and it always says boot process failed.

Is it possible to boot the image from Rommon via TFTP, if so what am I doing wrong?

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Question by:Jebutter
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2 Comments
 
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Expert Comment

by:rslqld
ID: 21808146
lol :)

May want to see if the flash is holding any of the SDM components and remove them to make room...
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Jebutter earned 0 total points
ID: 21816394
The size of the 12.x images is larger than the flash itself.  After searching around on Cisco's website I eventually found the orginal code that was on the switch (11.x) and it fits on the flash, so I was able to xmodem it to flash.
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