C871 FLASH ISSUE

[isaaco001]

Dear Community,

I have a corrupted flash as you will see from the attached file of a C871 router.I dont think you can load the IOS from the tftp-server when you can assign the router an ip address to begin with.what can be done to save router.I was hoping for loading via tftp but i cannot access the router privilge mode in the first place,only the rommode. Please advice.Thank you all.

RANDOM_NUM=2072945918
rommon 2 > IP_ADDRESS=10.1.1.1
rommon 3 > IP_SUBNET_MASK=255.255.255.0
rommon 4 > DEFAULT_GATEWAY=10.1.1.2
rommon 5 > TFTP_FILE=c870-advipservicesk9-mz.124-15.T
rommon 6 > TFTP_CHECKSUM=0
rommon 7 > tftpdnld

IP_ADDRESS: 10.1.1.1
IP_SUBNET_MASK: 255.255.255.0
DEFAULT_GATEWAY: 10.1.1.2
Missing or illegal ip address for variable TFTP_SERVER
Illegal tftp server IP address.

Regards,

Isaac.

[Mark Malone]

Hi

do you have a usb port ?

if so format a usb to fat16 put the image on it

see if its recognized in rommon then boot usb0:.......

if that doesn't work or you don't have a usb try format the current flash and try get an image back on it

If its still not working you will need to RMA it most likely

[isaaco001]

Hi,

Thanks for the reply.

I have formatted a generic flash in FAT16 as instructed but no luck this are some of the outputs.

flashfs[0]: erasing block 182...done.
flashfs[0]: Checking block 151...bad block number (-32617)
flashfs[0]: Inconsistency in flash found on second pass
flash: file system initialization failed
Could not open boot directory: flash:/
Unable to open boot file

System Bootstrap, Version 12.3(8r)YI3, RELEASE SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.

C870 series (Board ID: 3-148) platform with 131072 Kbytes of main memory

I also have a 1841 with flash issue:Though there is some hope as seen below with dev command.

Readonly ROMMON initialized
rommon 1 > dev
Devices in device table:
id name
flash: external compact flash
bootflash: boot flash
usbflash0: usbflash0
eprom: eprom
rommon 2 >

However there is an error as shown below when checking dir usbflash0:

rommon 2 > dir usbflash0:
program load complete, entry point: 0x8000f000, size: 0x3d180

*** TLB (Load/Fetch) Exception ***
Access address = 0x364
PC = 0x8003d878, Cause = 0x8, Status Reg = 0x3041e803

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

I have been going through forums to sought this usb issue out but no luck.Please advise.

Regards,

Isaac.

[Mark Malone]

that's alert is a hardware failure

https://supportforums.cisco.com/document/14336/router-continuously-reloads-and-tlb-loadfetch-exception-and-system-received-bus-error

[Palani Mohan]

Issac

Try tftpdnld -r. Doing so bypasses the transfer of IOS to flash and directly addresses the DRAM. If this step is successful, attempt to format flash:, when the router is operational.

I hope this helps ... Palani