You can later remove the older image using delete /force /recursive, but you can also just leave it, as the switch will automatically boot the first image it finds alphabetically if the ones from the boot path-list aren’t found. Then just reload the switch and you’re done. Running show boot again will now list the new image :īOOT path-list : flash:/ It does seem completely obvious now, but I had it in front of my nose for hours without seeing it in any Cisco documentation. The proper command is this one, run in configure terminal mode :īoot system flash:/

That command doesn’t seem to exist on the 3750. Private Config file : flash:/private-config.textĪnd all of the documentation I found references the boot command to select which image to boot, even a Cisco Wiki page for the 3750 (which I suspect was wrong about this). Here we see that it’s still the original one :īOOT path-list : flash:/5/ A quick look at the boot vars show which image will be used. Now comes the trivial yet tricky part : How to activate the image. Once the copy is over, the file is on the flash filesystem.

Of course, you can use tftp or any other supported protocol :Ĭopy xmodem: flash: The solution is quite simple : Just copy the image you want to the device, I did that using xmodem since I was too lazy to plug in a network cable (yeah, old school, especially given the archive tool doesn’t even support xmodem!). And the only bits of documentation I found which referenced the. tar archive, since I don’t want any fancy web interface on any of my core network devices.Īll of the current documentation explains only how to use the archive command, which can’t be used in this case, and I’ve tried /imageonly option to download-sw which still needs the. I just wasted hours trying to figure out how to upgrade a Cisco Catalyst 3750 using the.

Cisco 3750 firmware upgrade