Some clients fail to connect until AP rebooted

[T_Pitch]

I have the V2110 controller and a bunch of AP3825's in my network. Periodically I will hear about someone who is having trouble connecting (either a new client, or an existing client that had previously associated).

It started with an iPad where once a month it wouldn't see the AP. But when they'd bring me the iPad it would work when it was connected to the AP in my office. I finally got to troubleshoot it on site but it wouldn't connect. I told it to forget the network and when I attempted to add it back, it would tell me the password was incorrect. But I walk it down to my office and it would accept the password. I discovered the following web site, but I had already enabled that feature to no avail:
https://extremeportal.force.com/ExtrArticleDetail?an=000064648

Now it seems to be happening to various devices that are connected to various APs. Today a Windows laptop wouldn't associate. I rebooted the AP and then it would accept the password.

We're running 9.21.15.0006. I'm hoping there is a known bug and all we have to do is upgrade.
I haven't upgraded yet because I still have some AP3660s in the field- I don't believe they are compatible with 10. I'm working on removing/replacing these.

Thanks.

[Umut_Aydin]

Hi Thomas,

OK..I would go with the FW Upgrade to v9.21.19 if not done.( Here is some major fixes / Memory and stability related issues)

v9.21.20 is GA and will be available in some days over the portal page.
Maybe to go directly to this code.

See also
https://extremeportal.force.com/ExtrArticleDetail?an=000082130

After the update I would suggest to open a Case within GTAC.

Regards

Umut
 

[T_Pitch]

Ronald,

Actually both. One has WPAv1/TKIP and WPAv2/Auto while the other has only WPAv2/Auto. Both networks experience the same issues.

Umut,

I actually have it disabled when my most recent user reported trouble connecting. It wasn't until I rebooted the AP before they could connect.

[Umut_Aydin]

Hi Thomas,

try it with disable d Management Frame Protection: (MFP ) .
It's enabled by default.
WLAN Services->Privacy -> Management Frame Protection:
Regards

Umut Aydin

[Ronald_Dvorak]

- is it set to WPAv2 AES only or auto
- is WPAv1 disabled