Help Flashing IOS to 2821 Router

Mitchell Tuckness · ‎01-13-2014

Hi All,

i just got a used Cisco 2821 router from Ebay. I have 1GB of memory in it and a 512 Flash card in it. The unit has no OS on it. Well it has a

rommon 1 >

Prompt.

How do I update it to the newest IOS? It doesn't have commands I am used to, like CD or tftp. I tried to use the TFTPDNLD, but it didn't work. I don't know what to do to get the IOS on it and up and running, can anyone help?

Thanks!

Mitch

P.S. There is no show command so I can't do a show run.

Only Commands are:

rommon 4 > ?

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 motherboard 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

iomemset set IO memory percent

meminfo main memory information

repeat repeat a monitor command

reset system reset

rommon-pref Select ROMMON

set display the monitor variables

showmon display currently selected ROM monitor

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

O

Leo Laohoo · ‎01-13-2014

I have 1GB of memory in it and a 512 Flash card in it.

You can copy the IOS from your TFTP server to the CF flash directly using a multi-card reader.

Make sure the CF is formated with FAT16.

Mitchell Tuckness · ‎01-13-2014

Can you give me steps on how to do that? I found a site that tells me how to transfer the image from a TFTP server, but once it is over, it doesn't seem to show up or boot up with it.

Leo Laohoo wrote:

I have 1GB of memory in it and a 512 Flash card in it.

You can copy the IOS from your TFTP server to the CF flash directly using a multi-card reader.

Make sure the CF is formated with FAT16.

Leo Laohoo · ‎01-13-2014

Can you give me steps on how to do that?

Do you have a multi-card reader which you can connect to your PC or laptop via USB?

Mitchell Tuckness · ‎01-13-2014

I do, but it looks like I got it. For osme reason the first tftpdnld didn't work, but I tried a different bin and it worked, so I am all good, thanks!