How to upload IOS image from TFTP server

Posted on 2009-04-01
Last Modified: 2012-05-06
I have the rommon > problem and I need to upload a new IOS images, how do I get it from my TFTP server where the good image is stored? I have no IP connectivity in rommon > mode right?

Thank you
Question by:piotrmikula108
LVL 23

Assisted Solution

debuggerau earned 50 total points
ID: 24045630
If you have no connectivity, you can opt for a serial connection, where cutting and pasting will be your best friend, otherwise try and get IP connectivity going, probably using the default DHCP addresses used in the quickstart. ( from memory)..

LVL 43

Accepted Solution

JFrederick29 earned 400 total points
ID: 24045683
You can use tftpdnld from ROMMON.  Set the IP info, specify the filename of the image on the TFTP server and the IP address of the TFTP server.  For example:

rommon 1 > IP_ADDRESS=    <--assign an IP to the router
rommon 2 > IP_SUBNET_MASK=   <--assign the mask
rommon 3 > DEFAULT_GATEWAY=   <--assign a gateway if necessary
rommon 4 > TFTP_SERVER=   <--specify the TFTP server IP
rommon 5 > TFTP_FILE=c2600-is-mz.12.3(8)T.bin     <--specify the image name on the TFTP server
rommon 6 > tftpdnld  <--start the TFTP download

Assisted Solution

RandyReichert earned 50 total points
ID: 24049234
Does you router use a flash card? We simply remove the flash card and connect it to a computer and copy and paste the IOS onto the flash, pop it back in the router and back to normal.

Author Comment

ID: 24056960
No flash card, but JFrederick29's solutions just did what I needed

Thank you

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
checking for updates 11 59
Classlful vs Classless subneting 18 63
Router assigned IP addresses 18 71
How to restrict all websites and allow only citrix website 5 26
New Server  was moved from behind Router R2 f0/1 to behind router R1 int f/01 and has now address But we want users still to be able to connected to it by old IP. How to do it ? We can used destination NAT (DNAT).  In DNAT…
It happens many times that access list (ACL) have to be applied to outgoing router interface in order to limit some traffic.This article is about how to test ACL from the router which is not very intuitive for everyone. Below scenario shows simple s…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now