topic We have a similar setup with in Wireless

Client Association Failure Reason:Unknown ReasonCode: 102

M. Said Temelli — Mon, 05 Jul 2021 10:02:52 GMT

Hi,

We are using WLC 8510 with 8.0.110.0 code, 1131,1040, 1600, 1700, 2700, 3700 indoor APs, ISE 1.3.0.876. We have an eduroam SSID with [WPA + WPA2][Auth(802.1X + CCKM)] an a guest SSID with zero authentication. Both WLANs are using FlexConnect Local Switching. We have an association problem that is logged as :

Client Association Failure: MACAddress:80:1f:02:**:**:** Base Radio MAC:f4:4e:05:**:**:** Slot: 0 User Name:UNKNOWN IP Addr: unknown Reason:Unknown ReasonCode: 102

We take this log thousands of times in a day. It occurs in both SSID's and every models of APs we use. I searched the log at internet for months long and I could not find even one person who troubles with this problem. It is interesting that any of Cisco documents doesn't even mention about this case. I don't know maybe our WLC creates this log for itself only 🙂 I'm really stuck in this situation and can't find any thing more to try. This affects our wireless service quality too bad. Please, I need help immediately!

WLAN configs are attached.

Thank you.

I would test this without

Rasika Nayanajith — Mon, 27 Apr 2015 05:40:38 GMT

I would test this without CCKM, that is Auth (802.1X) & see if this is CCKM related.

Is that possible to test ?

Rasika

Now, there are 6K clients

M. Said Temelli — Mon, 27 Apr 2015 08:34:24 GMT

Now, there are 6K clients connected so I cannot try anything. But I will try it evening.

Thank you.

It is still the same. Nothing

M. Said Temelli — Tue, 28 Apr 2015 11:09:07 GMT

It is still the same. Nothing has changed 😞 Anything else?

Cisco released http://www

patoberli — Mon, 08 Jun 2015 14:53:46 GMT

Cisco released http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn80mr1dot5.html 8.0.115.0. Can you check if the issue is resolved in that release?

I also had the issue with 8.0.110.0 and had to downgrade to 7.6.130.0 to get eduroam working again. Same with a second university.

We have a similar setup with

mattlewis1 — Tue, 26 Jul 2016 17:01:38 GMT

We have a similar setup with a 5508 WLC and around 50 3502 access points on 8.0.120

The issue occurred only at one location (I have other locations with similar configurations) when I turned off Guest Wireless WLAN. This caused the WPA + WPA2 based SSID to no longer authenticate correctly. Doing the research like yourself, I only found one other post from Jonathan Mumm's blog, which just said to "Reboot" it. Which we did, and all users were able to authenticate again without any issues. Re-enabling the guest wireless WLAN did not fix the issue and I did notice that some devices were still connecting successfully, just not on certain Access Points. We didn't have time to investigate further due to production restraints, but I wanted to pass this along.

Besides doing a software

Freerk Terpstra — Sat, 30 Jul 2016 21:42:42 GMT

Besides doing a software upgrade of the WLC I would also investigate if it is possible to disable WPA support at all. Having WPA and WPA2 enabled on the same network can really confuse certain clients causing weird issues.

Please rate useful posts... 🙂

Thank you for your answer.

M. Said Temelli — Fri, 05 Aug 2016 13:10:07 GMT

Thank you for your answer. Actually we were having this trouble about a year ago. Since we couldn't find a solid solution for this error, we completely abandoned the Flexconnect architecture. Now we use local mode and everything is just simple and fine. I recommend everyone I see not to use Flexconnect as long as it is really required 🙂