wireless security question

[Bekzod]

Hi, SSID has wpa2+wpa3 security, when pc connects which one will be used first and then if it doesnt work fails to second? 

[Leo Laohoo]

Theoretically, WPA3 will take precedence and then WPA2.  

In reality, it is dependent on the wireless NIC and wireless NIC driver.  

[Bekzod]

we have macbook its failing 802.1x and then passing MAB , we checked certificates are good, and he can connect to meraki which only difference is using wpa 2  while cisco ap using wpa2+wpa3 . then i saw many users were complaining with macbook to wpa 3 and thinking maybe this is the problem

[Rich R]

- What model of WLC?
- What version of software?
Note:
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv35000
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvs75741 (marked as duplicate but no reference to what bug it's a duplicate of - you'd have to ask TAC).

Also make sure device OS and drivers are fully up to date.

[Bekzod]

wlc- 9800, version 17.9.4 , logs in ISE shows that endpoint is starting new session AAA  without finishing the previous one and then fails.

[Rich R]

Then you definitely need debugs on WLC and client at the same time and ideally OTA packet capture to understand why/where it's going wrong.  Then you know whether it's an Apple or Cisco problem and raise it with the respective vendor.  Do you have APSP installed on 17.9.4? (refer TAC recommended link below)

[Bekzod]

yes, apsp was installed . will try get debugs,  its not easy , he is big executive ))

thank you 

[Leo Laohoo]

Please upgrade to 17.12.3 and try again.