I bought myself a CCNA kit containing 2 x 1720, 1 x catalyst, 1 x 2600.
I've managed to break one of the 1720s by altering a setting in the 'conf Memory'
Now, when ever it tries to boot up, I get
device does not contain a valid magic number
boot: cannot open "flash:"
boot: cannot determine first file name on device "flash:"
System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
C1700 platform with 49152 Kbytes of main memory
And prompts me with "rommon 2>"
monitor: command "reboot" not found
rommon 5 > ?
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 display 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 display the monitor variables
stack produce a stack trace
sync write monitor environment to NVRAM
sysret print out info from last system return
tftpdnld tftp image download
unalias unset an alias
unset unset a monitor variable
xmodem x/ymodem image download
rommon 6 > reset
Does anyone know how I can fix this issue, or where I download the files to be able to re-image the router.
Hopefully then I can complete my course work ;O)
No problems in helping we all start and break things at some point :-)
To use the ROM monitor, you will be connected with a PC using the console port but this leaves the RJ45 ethernet port free on the router and PC for TFTP.
You will be using Console RJ45 (Router) -> Serial (PC) connectivity. If you are using an original cable it's a blue coloured cable with a RJ45 one end and a serial connector on the other.
Now connect a network cable to your PC and then the other end to the 10/100BASE-TX Fast Ethernet port (RJ-45) on the router. (Rommon should look on this port, there is however a note in one of the links I sent that a "10BASE-T Ethernet Port is not active in ROM monitor mode" there is however only 1 x 10/100BASE-TX ethernet port on the 1720's so I don't know exactly how this applies)
Set a static IP address and subnet on your PC (10.0.0.1, 255.255.0.0) use the "SET" command in ROMMON on the router to set the needed variables to get it working IP address (10.0.0.2), subnet (255.255.0.0), defaut gateway (10.0.0.1), TFTP Server (10.0.0.1), IOS Image (C1700-xx-xxx-xx.bin)
C1700-xx-xxx-xx.bin - replaces the xxxx with the relevant information.
Hope this helps and answers you questions