Aironet 1140 series, authentication failure

[Michiel Beenen]

Hello all,

Using an Aironet 1142 in our home and it works fine except that when i for example re-open my macbook air and/or android phone it sometimes has to reconnect to WiFi like 2 or 3 times before it actually is connected correct. I configured the 1140 with:

- One name for both 5Ghz and 2.4Ghz

- Open authentication, WPA enabled, WPAv2

Already tried setting static channels and automatic, also tried to separate two different SSID (one for 2.4, one for 5) but doesnt seem to solve it.

I see this in the logs:

Station xxxx.xxxx.xxxx Authentication failed

That's it. Any idea why this happens a lot of times?

[Scott Fella · Accepted solution]

Make sure if your using WPA v2 that you only have AES enabled and not TKIP. WPA v1 uses TKIP and WPA v2 uses AES.

Sent from Cisco Technical Support iPhone App

[Michiel Beenen]

I had it set to AES + TKIP and just put it to AES only, so hopefully that will fix it, thank you.

[Scott Fella]

That should fix it. Let us know

Sent from Cisco Technical Support iPhone App

[Michiel Beenen]

It seems to work better now, i only sometimes now see this:

Jul 23 16:59:01.923	Information	Interface Dot11Radio0, Station xxxx.xxxx.xxxx Reassociated KEY_MGMT[WPAv2 PSK]
Jul 23 16:58:56.610	Information	Interface Dot11Radio0, Deauthenticating Station xxxx.xxxx.xxxx Reason: Previous authentication no longer valid

Any idea how that is  possible? it should just stay connected.

[Michiel Beenen]

Could this have anything to do with the fact that we have 2 Aironets in our house/garden?

They are waaaay far apart from eachother though. Or do i need to enable any specific feature for it to work better?
Already tried disabling aironet extensions, but that doesnt fix it.

I keep having the problem that sometimes devices get reconnected or take 3 or 4 times before they are on wifi.

[Abhishek Abhishek]

Hello Michiel,

As per your query i can suggest you the following solution-

Configuring Authentication Types

This section describes how to configure authentication types. You attach configuration types to the access point's SSIDs. For details on setting up multiple SSIDs. This section contains these topics:

• Assigning Authentication Types to an SSID

• Configuring Authentication Holdoffs, Timeouts, and Intervals

• Creating and Applying EAP Method Profiles for the 802.1X Supplicant

For more information please refer to the link-

http://www.cisco.com/en/US/docs/wireless/access_point/12.4_21a_JA1/configuration/guide/scg12421aJA1-chap11-authtypes.html

Hope this will help you.

[Michiel Beenen]

You might call me an idiot but  im actually using the cool new GUI that comes with the latest firmwares and that works very good and way faster then remembering all commands