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C837 stops after decompressing the image

Hi all,
I just Upgraded firmware from 12.2 to 12.3(8)T3 : no problem.

Afterwards, CRWS advised me to Reset to factory default. I accepted but...
now, my Cisco 837 router boots up and no way to access and set up .....

I can connect to the console (Hyperterminal), and I see the following:
---------------------------------------------------------------------------------------------
System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)                                                            
TAC Support: http://www.cisco.com/tac                                     
Copyright (c) 2002 by cisco Systems, Inc.                                        
C800/SOHO series (Board ID: 23-127) platform with 32768 Kbytes of main memory                                                                            

program load complete, entry point: 0x80013000, size: 0x7cec3c                                                              
Self decompressing the image : #################################################                                                                          
##################################################                                                                        ###################### [OK]
_
-----------------------------------END------------------------------------------------------------
It should load the flash memory but it does not, should'nt it?
Now, I can't enter any command at the prompt
Any idea what happend? How to fix this?

Pls help!!!
Thanks in advance,
eric
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emaud
Asked:
emaud
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1 Solution
 
plemieux72Commented:
Try booting into rommon.  

Press Break on the terminal keyboard within 60 seconds of the power-up to put the router into ROMMON.
If the break sequence doesn't work, see http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml for other key combinations.
Type confreg 0x2142 at the rommon 1> prompt to boot from Flash without loading the configuration.
Type reset at the rommon 2> prompt.
The router reboots but ignores its saved configuration.
Type no after each setup question or press Ctrl-C to skip the initial setup procedure.
Type enable at the Router> prompt.
You'll be in enable mode and see the Router# prompt.
Type configure terminal. The prompt is now hostname(config)#.
Issue the no shutdown command on every interface that is used.  If you issue a show ip interface brief command, every interface that you want to use should be "up up".
Type config-register 0x2102
Press Ctrl-z or end to leave the configuration mode.  The prompt is now hostname#.
Type write memory or copy running-config startup-config to commit the changes.

This will determine if your config is correct.  If you still have problems, you will need to reinstall IOS (a known good working version).  You can also do this from rommon:
http://www.cisco.com/en/US/products/sw/accesssw/ps381/products_release_and_installation_notes09186a00800ab6b2.html





0
 
emaudAuthor Commented:
Thank you for your quick reply, plemieux72..


Now I can boot into rommon ( ctrl break wasn't working for me in hyperterminal, so i tried alt-b within teraterm and it worked ).

I follow your procedure ( rommon 1: confreg 0x2142  then rommon 2:Reset ) but the router still does not boot from flash:
it stops at the same step as you can see below
---------------------------------------------------------------------------------------------
System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)                                                            
TAC Support: http://www.cisco.com/tac                                     
Copyright (c) 2002 by cisco Systems, Inc.                                        
C800/SOHO series (Board ID: 23-127) platform with 32768 Kbytes of main memory                                                                            

program load complete, entry point: 0x80013000, size: 0x7cec3c                                                              
Self decompressing the image : #################################################                                                                          
##################################################                                                                        ###################### [OK]
_
-----------------------------------END------------------------------------------------------------

- I assume the flash is corrupted, what do you think?

- How to upload the original firmware from rommon ( fortunately, I saved it before upgrading ) ?

eric
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plemieux72Commented:
Yeah, it sounds like it's corrupt.  I've never encountered what you are describing before but if I were you, I'd put back the old image on there and see if that makes a difference.  

Now, the link I posted above is not the correct one... I just realized it's to upgrade the actual rommon image, not IOS.

So, here:
You can use tftpdnld or xmodem... try tftpdnld, it's much faster.  xmodem could take hours to upload an image via the console cable.
http://www.cisco.com/en/US/products/hw/routers/ps221/products_configuration_guide_chapter09186a008007cd0e.html#xtocid4

Here is another useful article describing the process:
http://searchnetworking.techtarget.com/tip/0,289483,sid7_gci944559,00.html
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emaudAuthor Commented:
ok
I could download a IOS but only using Xmodem.
It took a couple of hours but I got an arp error when using tftpdnld.

Many thanks for your help, Plemieux72!

I definitively appreciate this site a lot !!
eric
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plemieux72Commented:
Great!  Glad it worked.  It was my pleasure to be able to help.  Don't forget to click "accept" on the reply that answered your question.

Have a great weekend
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