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Wednesday, November 25, 2009

Cat 6500 boot problem - Rommon NVRAM area is corrupted


This issues is with a Catalyst 6500 that contains two WS-SUP720 supervisors. When we try to boot the supervisors up, they show these messages:
FW[Mod 06]: sso_set_reg: ERR sso 2: reg 0x05 value 0x08 rc 0x80
FW[Mod 06]: sso_set_reg_direct: ERR sso 2: reg 0x47 value 0xA0 rc 0x80
FW[Mod 06]: sso_set_reg: ERR sso 2: reg 0x04 value 0x01 rc 0x80
FW[Mod 06]: sso_set_reg: ERR sso 2: reg 0x05 value 0x08 rc 0x80
*** System received a Software forced crash ***
signal= 0x17, code= 0x24, context= 0x44ae0504
PC = 0x41d73e94, SP = 0x4309e108, RA = 0x4106fad8
Cause Reg = 0x00003820, Status Reg = 0x34008002

I tried to boot with another IOS image from the flash memory but It didn’t solved the problem.

The output of the context command is:
rommon 4 > context
context: kernel context is not valid

Debugging options
  1. Please confirm and check that there is a bootldr file present with the "set" command
  2. Try to force the Sup to load with the "boot" command
  3. If the IOS image file is corrupt it will fail to boot. Try to ftp a new image down from rommon
  4. If the bootldr is lost then it needs to be replaced with a new image file via xmodem.

Click here to access the document that describes how you can recover from corrupt/lost IOS image (stuck in rommon) or how to recover if you have a corrupt/lost bootldr image file.

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