Catalyst 3850 IOS 16.1.1

Upgraded my 3850 to Denali 16.1.1 today. The new unified web GUI for the whole switch is pretty slick.  There are a ton of new features. See the Release notes here.  Now this is the first release of 16 so I don’t know I’d jump on it for a production network until there is a bug fix rebuild, or at least without checking the open caveats.

I ran into a problem that the APs would register, the radios just wouldn’t come up. Nothing I tried in the GUI (like bouncing the radios between disabled and enabled) would get them to go Operationally UP.

Turns out the secret was to go into the guy and do a “no ap dot11 5ghz shutdown” and a “no ap dot11 24ghz s.”  The radios came right up and everything is working again.