So far, we’ve discussed backing up configuration files, restoring them, and backing up the Cisco IOS software itself. This time, we’ll upgrade the Cisco IOS software on a router by building on what you’ve already learned. NOTE: If you’d rather watch than read, check out the video at the bottom of this article.

In previous articles, you learned how to install a TFTP server and how to back up IOS configuration files. Now, let’s assume that disaster has struck. The “disaster” could take several forms: an engineer fat fingered a command and screwed up the configuration, a hardware failure occurred, or perhaps a natural disaster took out our [...]