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1751-V **Software emulation error*

Hello, this has been my worst night. I have a Cisco 1751-V with c1700-sy7v-mz.122-12 image which I thought it was ok. After connecting to the console the router decompresses the image and then reboots stating that a problem ocurred.

I have it in diagnostic mode so when I boot it I see:

System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1) TAC Support:

formatting link
(c) 2001 by cisco Systems, Inc.

Testing lower main memory - data equals address Testing lower main memory - checkerboard Testing lower main memory - inverse checkerboard Clearing lower 4K memory for cache initialization Clearing bss Reading monitor variables from NVRAM Enabling interrupts Enabling instruction cache Reading cookie Initializing main memory Sizing NVRAM Sizing flash Exiting init C1700 platform with 65536 Kbytes of main memory

rommon 1 > dir flash: File size Checksum File name 7897312 bytes (0x7880e0) 0xe4ff c1700-sv3y-mz.122-2.XK.bin 259405 bytes (0x3f54d) 0x3883 crashinfo_19930301-000014 rommon 2 > boot program load complete, entry point: 0x80008000, size: 0x787fc4 Stack pointer : 0x04000000 monstack : 0x800063EC monra : 0x00000000 edata : 0x8000C014 magic : 0xFEEDFACE memsize : 0x04000000 uncomp_size : 0x013DDE28 comp_size : 0x00783F9B comp_checksum : 0x024F31D6 uncomp_checksum : 0xBBBE8F11 Self decompressing the image : ################################################# ###################################################################### [OK] Source elf_hdr->e_shnum = 0x0000000A Setting up to copy ELF section 0x00000001 to image_info section 0x00000000 sh_name = 0x0000001B sh_type = 0x00000001 sh_flags = 0x00000006 sh_addr = 0x80008000 sh_offset = 0x00000060 sh_size = 0x00D2CBD8 sh_link = 0x00000000 sh_info = 0x00000000 sh_addralign = 0x00000020 sh_entsize = 0x00000000 Setting up to copy ELF section 0x00000002 to image_info section 0x00000001 sh_name = 0x00000021 sh_type = 0x00000001 sh_flags = 0x00000002 sh_addr = 0x80D34BD8 sh_offset = 0x00D2CC38 sh_size = 0x0050E5B6 sh_link = 0x00000000 sh_info = 0x00000000 sh_addralign = 0x00000008 sh_entsize = 0x00000000 Setting up to copy ELF section 0x00000003 to image_info section 0x00000002 sh_name = 0x00000029 sh_type = 0x00000001 sh_flags = 0x00000002 sh_addr = 0x8124318E sh_offset = 0x0123B1EE sh_size = 0x00000002 sh_link = 0x00000000 sh_info = 0x00000000 sh_addralign = 0x00000004 sh_entsize = 0x00000000 Setting up to copy ELF section 0x00000004 to image_info section 0x00000003 sh_name = 0x00000031 sh_type = 0x00000001 sh_flags = 0x00000003 sh_addr = 0x81243190 sh_offset = 0x0123B1F0 sh_size = 0x001A2A44 sh_link = 0x00000000 sh_info = 0x00000000 sh_addralign = 0x00000008 sh_entsize = 0x00000000 Setting up to copy ELF section 0x00000005 to image_info section 0x00000004 sh_name = 0x00000037 sh_type = 0x00000001 sh_flags = 0x00000003 sh_addr = 0x813E5BD4 sh_offset = 0x013DDC34 sh_size = 0x00000010 sh_link = 0x00000000 sh_info = 0x00000000 sh_addralign = 0x00000004 sh_entsize = 0x00000004 cpu type : 0x00000033 uncomp_size : 0x013DDE28 monstack : 0x800063EC

image_info.entry_point = 0x80008000 image_info.section_count = 0x00000005 image_info.monstack = 0x800063EC image_info.monra = 0x00000000 image_info.param0 = 0x00000002 image_info.param1 = 0x00000000 image_info.param2 = 0x00000000 image_info.param3 = 0x00000000 Section Index = 0x00000000 source = 0x80034600 dest = 0x80008000 bytes = 0x00D2CBD8 Section Index = 0x00000001 source = 0x80D611D8 dest = 0x80D34BD8 bytes = 0x0050E5B6 Section Index = 0x00000002 source = 0x8126F78E dest = 0x8124318E bytes = 0x00000002 Section Index = 0x00000003 source = 0x8126F790 dest = 0x81243190 bytes = 0x001A2A44 Section Index = 0x00000004 source = 0x814121D4 dest = 0x813E5BD4 bytes = 0x00000010

*** Software Emulation Exception *** PC = 0x83fd784c, Vector = 0x1000, SP = 0x83fffea8

monitor: command "boot" aborted due to exception rommon 3 >

I tried to reload the IOS through tftp and xmodem but always ends with some error.

Any ideas? PLEASE HELP!!!

Pablo

Reply to
pabloquintana
Loading thread data ...

Hello pabloquintana,

[ snip ]

The fact that you are getting an error when you try to reload the IOS should be your clue. What error do you get?

Bottom line, it seems to me like a corrupt IOS image.

--me

Reply to
Slade Wilson

Thanks for your answer. I believe the IOS is corrupted too. That is why I tried to reinstall another image with no success. After the image has been copied through tftp or xmodem the image will try to boot and then the same error appears:

Any other ideas?

Reply to
pabloquintana

Hello pabloquintana,

Not sure. I will say that I can't find your software release on CCO -- when I select 12.2 and the 1751-V, the only choices I get are either ED (12.2.15T17,

12.2.15T16, 12.2.13T16, and 12.2.10-TPC10a) or deferred (a bunch of 12.2.15 and 12.2.13 releases).

No idea if that has anything to do with it but you might try a different code release.

--me

Reply to
Slade Wilson

Did you recently upgrade something on the box (IOS image? rommon?) or is it that this particular image and rommon combination worked fine on the box until recently?

Some things for you to try -

  1. Power cycle the box and try booting the image again just in case this is some kind of persistent rommon bug that needs a cold reset to fix itself.

  1. Set the config register to ignore config and see if it boots up fine then. That might give you a clue that it has something to do with some config command. Note that the error seems to happen after the image is loaded and init is happening (possibly application of the startup config).

Cisco da Gama

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Reply to
ciscodagama

The router worked fine with this configuration. I didn't update any software recently. The router was sitting in my office for several months until now.

What would be the config register that will ignore the config?

Pablo

Reply to
pabloquintana

Try setting the configuration register to 0x2142 to have it ignore the startup config on boot. The rommon command to cause that should be someting like

rommon 5 > confreg 0x2142

This setting will just add the ignore start-up config bit to the default value of the config register and so breaks will still be disabled, and you will auto-boot.

Look at

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for details on the bits in the config register.

Cisco da Gama

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Reply to
ciscodagama

Cisco da Gama,

Same problem. Look at the output

System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1) TAC Support:

formatting link
(c) 2001 by cisco Systems, Inc. C1700 platform with 65536 Kbytes of main memory

program load complete, entry point: 0x80008000, size: 0x787fc4 Self decompressing the image : ################################################# ################################################################################ ################################################################################ ################################################################################ ################################################################################ ############################################################### [OK]

*** Software Emulation Exception *** PC = 0x83fd783c, Vector = 0x1000, SP = 0x83fffea8

monitor: command "boot" aborted due to exception

I'm going nuts!

Reply to
pabloquintana

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