New WLCS C9800-40: All Slot 2 5 Ghz Radios Disabled

[Michael Mertens]

Novice in wireless...I have a new C9800-40 with 8 APs. The main dashboard shows Qty (16) 5 Ghz radios, with 8 down. If I go into the APs, it shows the Admin status as "disabled". When I attempt to enable- I receive a message that "This radio is not support with the current software version and hence configuration is disabled". I just upgrade to recent code 17.9.4a. Is this a version issue, behavior as designed, or some way I can clean-up my dashboard if this is normal?

Thank you!

[marce1000]

  (edited) : Ref https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html
                          (Check AP compatibility versus controller + software version being used on the controller)

   Have a checkup of the C9800-40 controller configuration with the CLI command show tech wireless and feed the output to : Wireless Config Analyzer
                                                        Consider the above task vital , 

 M.

[Michael Mertens]

Marce, Thank you- I never used that tool or knew of its existence- lots of good information. Fortunately, the two errors I received are known to me and I will address. Thank you for your input, assistance and knowledge!

Mike

[Rich R · Accepted solution]

What is the exact complete model number of the APs?
What country are you using those APs in?
Is the 9800 correctly configured for that country?

At a guess: maybe the APs are 9136?
In which case you are probably looking at the "quad radio" feature which is only enabled from version 17.13.1 and later:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-13/release-notes/rn-17-13-9800.html#whats-new-17131
https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-13/config-guide/b_wl_17_13_cg/m_cisco_ap_tri-radio.html

[Michael Mertens]

Rich R., 

You are correct- they are C9136s. Country Code looks good on AP vs. WLCS (US). The docs you found make a lot of sense as to why my 2nd radio is down on 5Ghz and why, when I try to enable it, IOS tells me it's not supported in this version. Thank you!

[Rich R]

Cool glad we solved it.