09-19-2005 12:20 AM - edited 03-03-2019 10:32 AM
I've got 2x Cisco 4500 routers in my lab.
They are based on identical HW, and I've decided to upgrade the IOS.
The first box went very well, where for the second one something didn't work.
Now when I boot it up goes directly into rommon.
I found a document telling how to set the system variables to be able to access a TFTP server. So I set the variables:
IP_ADDRESS
IP_SUBNET_MASK
DEFAULT_GATEWAY
TFTP_SERVER
TFTP_FILE
Now, following the procedure I suppose to use a command called "tftpdnld" but this is not present from my version of rommon.
The only command I can see is called dnld but I guess it doesn't do the same job.
Any advice on how to boot up this box?
May be copying the IOS with xmodem?
Thanks in advance
09-19-2005 12:26 AM
Hi Bell,
Are you sure that there is no image in the flash. As you said you tried upgrading and something went wrong.
If there is no image at all in flash then we can go for xmodem but incase there is any image in router flash we can manually boot the router from the flahs with that image and once the router is up we can se the boot path and the ocnfig register vlaue to 2102.
Regards,
Ankur
09-19-2005 01:30 AM
Bell,
The switch is going into ROMMON mode because it cannot find a valid software image, its NVRAM configuration is corrupted or the configuration register is set to enter ROMMON mode.
To boot up this switch, follow the steps here: http://www.cisco.com/en/US/products/hw/switches/ps663/products_configuration_guide_chapter09186a00800dde97.html#1021882.
Otherwise for information on how to copy Images from a Server to Flash using TFTP, RCP or FTP, go here http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800c6c65.html#1001288 and information on troubleshooting image transfer using TFTP or an RCP server is available here: http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_qanda_item09186a00800a775f.shtml.
Good luck!
Josef.
09-19-2005 01:31 PM
Josef, thanks for your links, however the first one referes to a catalyas 4500 (switch) where I've got a router.
The second and third one refere on how to boot from tftp but from a working IOS, which I don't have :-(
The only command mentioned is rommon is xmodembut this is not available in the version of rommon my router runs.
Any other idea?
Thanks to everybody for the effort
Stefano
09-19-2005 01:32 PM
Here is the list of commands availables:
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
cookie display contents of cookie PROM in hex
dev list the device table
dir list files in file system
dis disassemble instruction stream
dnld serial download a program module
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
set set a monitor variable
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
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