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How to recover CatOS bootup from rommon mode?

I have a 6509 Sup2 not being able to bootup. It displayed the following error and went into rommon mode.

Autoboot executing command: "boot bootflash:cat6000-sup2cvk8.8-3-7.bin"

Error : compressed image checksum is incorrect 0x05ECF6AF

Expected a checksum of 0x05ECF5AF

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

I want to break into the rommon mode and set the config register to bypass the config file to boot. Can someone let me know what the break sequence is for a 6509 Sup2 and what the config register I should set?

Thanks a lot

Gary

2 REPLIES

Re: How to recover CatOS bootup from rommon mode?

Check out the following links:

Recovering Catalyst Switches Running CatOS from Booting Failures

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00800949c3.shtml

Standard Break Key Sequence Combinations:

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml#topic1

Hope that helps.

--Sundar

New Member

Re: How to recover CatOS bootup from rommon mode?

Hi Gary,

Please try 0x2142 for config register.

You need to reupload the image from ROM mode.

The following link may help you.

http://www.cisco.com/en/US/customer/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml

Hope it useful for you.

Regards,

Tong

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