Hello, Ive purchased used Cisco 18 routers from auction to practice on real hardware.OK, you'll need to use the archive download-sw IOS command and make sure you have the relevant *.TAR image file in the \TFTP-Root directory of your Core server (the newer Cisco switches don't really like the old 'copy tftp: flash:' commands - they use a subfolder in the flash: directory these days for the actual image file).
