TFTP transfer in ROMMON

plasiboli_2 · ‎05-25-2010

Hi,

I have received Cisco VXR 7206 that can’t boot and always goes to ROMMON.

After debugging I saw that the router does not have valid IOS that can boot from.

rommon 11 > dev

Devices in device table:

id name

bootflash: boot flash

slot0: PCMCIA slot 0

slot1: PCMCIA slot 1

disk0: PCMCIA slot 0

disk1: PCMCIA slot 1

slot2: PCMCIA compact flash

disk2: PCMCIA compact flash

eprom: eprom

rommon 12 > dir bootflash:

File size Checksum File name

981 bytes (0x3d5) 0xa376a868 c7200p-ipbasek9-mz.124-4.XD4.bin

rommon 13 > dir slot0:

File size Checksum File name

rommon 14 > dir slot1:

File size Checksum File name

rommon 15 > dir disk0:

File size Checksum File name

rommon 16 > dir disk1:

File size Checksum File name

rommon 17 > dir slot2:

open: file "c7200p-atafslib-m" not found

open(): Open Error = -1

loadprog: error - on file open

cannot load the monitor library "slot2:%c7200p-atafslib-m" for device: slot2:

dir: cannot open device "slot2:"

rommon 18 > dir disk2:

open: file "c7200p-atafslib-m" not found

open(): Open Error = -1

loadprog: error - on file open

cannot load the monitor library "disk2:%c7200p-atafslib-m" for device: disk2:

dir: cannot open device "disk2:"

rommon 19 >

So I wanted to transfer an IOS image trough TFTP. But there is no command in the help menu that could be used for this kind of transfer.

rommon 19 > ?

alias set and display aliases command

boot boot up an external process

break set/show/clear the breakpoint

confreg configuration register utility

cont continue executing a downloaded image

context display the context of a loaded image

cpu_card_type display CPU card type

dev list the device table

dir list files in file system

dis disassemble instruction stream

frame print out a selected stack frame

help monitor builtin command help

history monitor command history

meminfo main memory information

repeat repeat a monitor command

reset system reset

rommon-pref Select ROMMON

set show all monitor variables

showmon display currently selected ROM monitor

show_spd show all SPD data

stack produce a stack trace

sync write monitor environment to NVRAM

sysret print out info from last system return

unalias unset an alias

unset unset a monitor variable

rommon 20 >

I’ve tried the following:

rommon 5 > IP_ADDRESS=192.168.1.1

rommon 6 >

rommon 6 > IP_SUBNET_MASK=255.255.255.0

rommon 7 > DEFAULT_GATEWAY=192.168.1.113

rommon 8 > TFTP_SERVER=192.168.1.113

rommon 9 > TFTP_FILE=c7200p-ipbasek9-mz.124-4.XD9.bin

rommon 10 > boot system tftp c7200p-ipbasek9-mz.124-4.XD9.bin 192.168.1.113

and got the following output from the VXR:

loadprog: bad file magic number: 0x0

boot: cannot load "bootflash:c7200p-ipbasek9-mz.124-4.XD4.bin system tftp c7200p-ipbasek9-mz.124-4.XD9.bin 192.168.1.113"

So I need help…

Does anyone encountered similar problem, or maybe I am doing something not right…

Best regards to all

Giuseppe Larosa · ‎05-25-2010

Hello Oliver,

I note that:

>> 981 bytes (0x3d5) 0xa376a868 c7200p-ipbasek9-mz.124-4.XD4.bin

this file is too small or corrupted even for a boot loader it cannot be a correct file you should consider deleting it from bootflash

caution : read the following document before doing anything

see the procedure for C7200

http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a0080110ed1.shtml#loadingthebootimage

Hope to help

Giuseppe

plasiboli_2 · ‎05-25-2010

Hi giuslar,

thanks for the fast response.

I've seen the link that you have recommended to me, but the register is not the problem. Whatever register I set the router goes into ROMMON mode.

I am interested in how can I first format the flash on the VXR and then transfer the new IOS trough TFTP.

Cause I didn't manage to find on the net any procedure for transferring IOS image on VXR trough TFTP in ROMOM mode. I am familiar with the TFTP transfer procedure when the confreg is 0x2101 or 0x2102...

Best regards

Giuseppe Larosa · ‎05-25-2010

Hello Oliver,

as explained in the previous link the C7200 is multi stage, that is you need a boot image installed in order later to load via TFTP the full IOS image.

see the boot procedure that Peter Paluch had provided some time ago in attachment

Hope to help

Giuseppe

plasiboli_2 · ‎05-26-2010

Hi giuslar,

Thank you for the useful information.

According to what you’ve said I’ve transferred the following files:

c7200p-ipbasek9-mz.124-4.XD9.bin

c7200p-kboot-mz.124-4.XD9.bin

rommon 8 > dir slot2:

Directory of slot2:

2 7950564 -rw- c7200p-kboot-mz.124-4.XD9.bin

1944 21322640 -rw- c7200p-ipbasek9-mz.124-4.XD9.bin

rommon 10 > dir disk2:

Directory of disk2:

2 7950564 -rw- c7200p-kboot-mz.124-4.XD9.bin

1944 21322640 -rw- c7200p-ipbasek9-mz.124-4.XD9.bin

and I’ve set the following parameters in several attempts with diferent confreg:

BOOT=bootflash:/c7200p-ipbasek9-mz.124-4.XD9.bin

BOOT=disk2:/c7200p-kboot-mz.124-4.XD9.bin

But the VXR was still trying to boot from the bootflash, giving me the following output:

Readonly ROMMON initialized

loadprog: bad file magic number: 0x0

boot: cannot load "bootflash:c7200p-ipbasek9-mz.124-4.XD4.bin bootflash:"

so I’ve renamed the images from XD9 to XD4, and the same thing happened…

BTW I am transferring the image files trough card reader.

Best regards

Giuseppe Larosa · ‎05-26-2010

Hello Oliver,

you need to:

delete the corrupted boot image *XD4

copy new boot image into bootflash it is the place where it should stay

>> BTW I am transferring the image files trough card reader.

this might be part of the problem

be aware that router filesystems may react negatively to a card written by somebody else (even a different router platform of another model)

follow instructions of first link I've provided for above steps

Hope to help

Giuseppe

plasiboli_2 · ‎05-27-2010

Hi to all,

I’ve solved the problem.

Fact is that without “…kboot…” file the VXR can’t be started and the equivalent IOS image should be present in order to have clean situation (without booting the router in Router(boot) mode).

Because I’ve formatted the flash with a card reader the files on the card weren’t recognizable and acceptable so that the VXR can boot from, but the files were listed with the “dir disk2:” command.

So the solution was obvious… I’ve formatted the flash with the card reader and transferred the two files, kboot and IOS image to that card. I’ve found another functional VXR (same model 7206) and inserted the flash, copied the two files to the bootflash and formatted the flash, then transferred back the two files to the flash. After inserting that card in the “problematic” VXR everything worked as it should be.

Giuslar, thanks for the support.

Giuseppe Larosa · ‎05-27-2010

Hello Oliver,

I'm happy you have solved this issue, when you have mentioned the card reader I understood it was related to it

Hope to help

Giuseppe

maurisg · ‎05-12-2020

Hello I have a c2821 router I’m using for my lab. I had to format the CF. I found a procedure to tftp the . bin file in Rommon mode. I set up the IP on both pc and the router but not for sure which port on the router to plug the rj45 (network cable) back to my pc (which is the tftp sever). Also do I need to set something else in Rommon mode if I use the Gi0 or Gi1 interface. I’m not able to ping the router from the pc and it times out when I try to tftp the file. Thank you

Richard Burts · ‎05-14-2020

Is the process you are using tftpdnld or is it something else? Perhaps you can supply more details about how you are setting up and executing tftp? Might be helpful if you post output of the command set in rommon.

HTH

Rick