How to backup a Cisco IOS

Learn how to securely backup a Cisco IOS image in this guide. Under no circumstances should you delete the working IOS image without proper backup to a server (TFTP or FTP). Find out the essential steps for data protection and network reliability.

To safeguard against potential power or connection loss during IOS image transfer, it’s crucial to back up a Cisco IOS. This ensures a working image is preserved on the server, preventing disruptions if the router’s flash memory needs maintenance or updates.

backup a Cisco IOS: Quick Guide

Need to make a backup image? Or do I need to download the image? Try the following

Backup image to TFTP server
Router>enable
Router#copy flash:{your IOS image filename} tftp://{TFTP server IP address}

Download image from TFTP server
Router>enable
Router#copy tftp://{TFTP server IP address} flash:
For those routers or switches that have USB port, you can use USB Flash drive to backup or to download IOS images as follows
 

Backup image to USB Flash drive
Router>enable
Router#copy flash:{your IOS image filename} usbflash0: