C9300 as L3 switch as well as EWC at a same time.

[Namgyal]

Can we user catalyst 9300 switch as normal L3 switch as well as embedded wireless controller at a same time,
if yes kindly let me know how to configure it?

[Flavio Miranda]

@Namgyal 

 It was possible until few years ago but Cisco have retired this solution 

"

As part of mode consolidation Embedded Wireless on Catalyst 9000 Series Switch (non-SDA) using WebUI will be End of Support (Q3FY21) with no additional feature development or code changes and 17.3.x is the last supported release.

The supported workflow is shown in this deployment guide."

https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9800-series-wireless-controllers/guide-c07-744299.html 

[docjb0221]

Technically you can, if you use an older version of IOS. I once wasted a huge amount of time trying to get this to work but it did work in the end. If you're trying to avoid buying a WLC, you'd be better off going with a virtual appliance or even cloud-hosted. Since you're going to pay a DNA subscription anyway, you might consider going with a Meraki-hosted solution.

[Leo Laohoo]

A layer 3 switch (and potentially a core switch) and a WLC?  What could possibly go wrong?