Rommon Problem

Unanswered Question
Jul 23rd, 2007
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I have 3 cisco 3640 all have sending me rommon prompt so i tried to resolve using xmodem.

i followed the following steps:


1-Into the confreg i set the baud rate to 115200 than connect it to using HT at 115200 B/r

check the flash using dir flash:

giving the command

xmodem -c c3640-jk9o3s-mz.124-5a .bin

after the completion it give me the following error.


uncompressed image checksum is incorrect 0x46b7fabc expected a checksum of 0xa8c3facd





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kerek@banknet.net Tue, 07/24/2007 - 00:09
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Hi,


It looks that the image is damaged after it transfered (or it was already before that).

If you use xmodem then try to find the smallest image (you can save a lot of time) and after you can easily upgrade.

Alternatively if you have ethernet port then let's try to use tftpdnld. Very fast...


http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml



Hope it helps, rate if does,

Krisztian

khanahmer Tue, 07/24/2007 - 01:28
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hi,

I tried usinf Solarwind tftp server but when i run tftpdnld the error message is command not found.


thanks

ccnp_ccie Tue, 07/24/2007 - 01:36
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hi,


may be that command is not supporting on router. as suggested above try to upload small ios(IP) image.


khanahmer Tue, 07/24/2007 - 03:01
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i tried 3mb image zip compress failed


Regards,


kerek@banknet.net Tue, 07/24/2007 - 03:07
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The image should have .bin extension. First unpack it.

khanahmer Tue, 07/24/2007 - 04:07
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Error-1

---------------------

rommon 1 > xmodem -yc c3640-i-mz.124-5a.bin

Do not start the sending program yet...

File size Checksum File name

3686948 bytes (0x384224) 0x107e c3640-i-mz.120-2a.t1.bin


WARNING: All existing data in flash will be lost!

Invoke this application only for disaster recovery.

Do you wish to continue? y/n [n]: y

Ready to receive file c3640-i-mz.124-5a.bin ...

Erasing flash at 0x31fc0000

program flash location 0x309a0000

Download Complete!

program load complete, entry point: 0x80008000, size: 0x9a84e8

Self decompressing the image :

Error : Uncompression of the image fail

invalid compressed data--format violated


Error : zip decompress failed


*** System received a Software forced crash ***

signal= 0x17, code= 0x7, context= 0x8000eb20

PC = 0x800080d4, Cause = 0x20, Status Reg = 0x3041f003



Error -2

------------

rommon 3 > xmodem -c c3640-jk9o3s-mz.124-5a.bin

Do not start the sending program yet...

File size Checksum File name

ROM Monitor EMT police: EMT call "EMT_TICKS" requested but not supported

28855036 bytes (0x1b84afc) 0x4a63 c3640-jk9o3s-mz.124-5a.bin (bad checksum

: 0xca98)


WARNING: All existing data in fl

Invoke this application only for disaster recovery.

Do you wish to continue? y/n [n]: y

Ready to receive file c3640-jk9o3s-mz.124-5a.bin ...

Erasing flash at 0x31fc0000

program flash location 0x31100000

amd_flash_cmd: timeout on AMD flash command


program_flash: location 0x31100000 wrote 0x6977cdde,contains 0x697726de

program flash failure at location 0x31100000 - aborting

rommon 4 >

kerek@banknet.net Tue, 07/24/2007 - 04:48
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Hi,


It looks somehow the router not able to uncompress the image. What does the dir flash: shows? Is there enough space on that?


Anyway what caused to went the router to rommon?


Krisztian

Amit Singh Tue, 07/24/2007 - 04:57
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  • Cisco Employee,

It seems to be a faulty hardware to me.


Please try taking the DRAM and flash out and reset them again on the slots. Power on the router and then try sending the file again. Please see the link below for placing the DRAM and Flash:


http://www.cisco.com/en/US/products/hw/routers/ps274/products_installation_guide_chapter09186a008007de1b.html#1034416


If still it doesnot work, Please get the replacement for the BOX.


-amit singh

khanahmer Tue, 07/24/2007 - 05:19
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dir flash:


Device does not contain a valid magic number

boot: cannot open "flash:"

boot: cannot determine first filename on device "flash:"



Thanks

kerek@banknet.net Tue, 07/24/2007 - 05:21
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Well as suspected above it might be a hardware issue indeed. Let's try to reseat the memory modules and if not helps start an RMA procedure as suggested.


Krisztian

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