@Amore you don't mention, and neither does the article: does the device use the same MAC address on both bands (in other words trying to get 2 different IP addresses for the same MAC)?If so then it seems like a pretty stupid feature in my opinion! Wi...

This is a duplicate question - merging with the other question.

The last white paper on DCA was written for AireOS 8.3: https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_RRM_White_Paper/dca.html but the same basic principles still apply. You can also check the config guide https://www.cisc...

TLS is used to secure the connection, not only to protect PII but also to ensure the connection is not tampered with eg MITM attack to inject malware.  It's about the client trusting that it's talking to who it thinks it's talking to. AireOS will nev...