WLC 9800 DOESN´T CONNECT WITH SOME ANDROID DEVICES

[igalang1093]

Hello,

I have a problem with some android devices, some of them can´t be connected to the wireless network through PSK, they only can connect to one of the SSID's which is using  Web authentication. I have a Catalyst 9800 WLC and 9115 AP.

I hope you can help me.

[stayd]

I can confirm that ap with image version 17.3.3.26 is affected.

[AronUrban]

We are facing the same issues.
WLC Version 17.3.4 on C9800-80 WLCs

We have Nokia 4.2 and OnePlus devices and also iPad Gen 7 with iOS15.x with those Problems. We will try to disable FT and AES Password Encryption today and test the devices again. I will update you with the results

[stayd]

According bug https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu24770

your version was / is not within listed one.

What was the result ?

[NizamAhmed19]

I do agree with Michael,

Recently I've experienced this issue on AP 9120 and WLC 9800. The issue was intermittent SSID connection. Hopefully it was due to the back dated android OS.

Fix: For me it was solved, "Fast Transition" should be selected as Enabled.

Configuration>Tags & Profiles>WLANs> Security

Hopefully it will work. If still persists, please post here.

Thnaks

[jyk9941]

저도 같은 문제 겪는 중인데, WLC9800 17.12.5 버전이고 9115AXi AP에서 구형 PDA 안드로이드10 단말기 접속 문제가 있습니다.
PSK 방식은 연결이 안되고 open 이면 연결이 되는데 단말문제인가요? 아님 AP 문제인가요?

[Leo Laohoo]

Old Android OS does not support PMF.  

If the WLC is on 17.12.X, any Cheetah OS will have PMF set to Mandatory or Optional. AireOS has the option "Disable" PMF and this will allow old Android and Apple wireless clients that do not support PMF to work.  

Another option is to use Classic IOS APs, like the 2700/3700, because even if they are joined to 9800 and in 17.12.5, the old APs are pointing to old AireOS and PMF is disabled.