cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
38010
Views
6
Helpful
28
Replies

Lots of wireless authentication failures

anythinghosted
Level 4
Level 4

Hello!

With the improved wireless health screens, I've been trying to diagnose some issues. I am seeing a lot of authentication errors (mainly with iPhone / iPads). Some are static and some roam from one AP to another.

I've cleared the network settings and removed the wifi ssid from the phone and it's still happening.

Any ideas? I am testing and will soon deploy Identity PSK with RADIUS -will that address the problem?

Thanks,

Chris

image.png

28 Replies 28

CMR
Meraki Community All-Star
Meraki Community All-Star

What MR model and firmware are you running. Is it causing an actual problem, or simply a log issue?

If my answer solves your problem please click Accept as Solution so others can benefit from it.

Both APs are MR52 and latest firmware (26.7)

I do notice that sometimes my iPhone is on 4G and then switches back to wifi, is that an issue probably not.

I do have wifi calling set up and sometimes notice if I roam between the APs the signal degrades quite a lot (normal phone signal is pretty weak).

I do have 802.11r set to Adaptive (and just PSK WPA2). I do understand the security issue and hence moving to iPSK.

PawelG
Level 2
Level 2
I have similar problems with MR45s and mostly iPhones and iPads. Firmware 26.7.
I'm using 802.1x with Meraki authentication - thought that might be Meraki radius availability problem.

br, Pawel.

This morning, iPhone now says incorrect password and won't even join.

No configuration changes have been made at all.

Worth raising a case with Meraki support to have it logged?

After upgrading to 26.7 I had constant and repeated problems with authentication, both standard WPA2 and RADIUS. Rolling back to 26.6.1 fixed the issues - I'd try that first and wait for a stable release to come out instead of the RC.

I've did a bit of debugging of this issue today and found out some curious thing:

It seems that failures reported by Wireless Health are fake. When I look at access logs there is no such event (there is a Radius authentication event, but it is not fail - just roaming re-auth)

Opened case about that.

Br, Pawel.

Hi!

Any replay from TAC about this behavior?

BR

frenz

Wireless, what else?

I've opened a case.

I've got reply that they are not aware of such issue and I need to call them to make real-time packet capture.

The problem is that those errors are random and it is not easy to reproduce them during such session.

Pawel.

vasank
Cisco Employee
Cisco Employee

I have seen similar issue with Apple and Non Apple devices as well. My MR is set for WPA2-PSK and the device is failing with WPA-PSK auth. It doesn't seem like an issue as my device connects fine later. I would hope if I enable WPA and WPA2 I will not see this error. I discarded it as a false alarm.

PawelG
Level 2
Level 2

One question to anyone that still have this issue:

Do you have corresponding event log entries to health-reported authentication errors. In may case there aren't any.

I've noiticed TAC about that, but they simply ignored it.

Br, Pawel.

wayne.ranchuk
Community Member

I ma having the same issues Just replying so i can follow the answers

I'v downgraded APs to 26.6.1 and problem still exists on both WPA2-PSK and WPA2-Enterprise networks. Authentication failures are only with Apple iOS devices - and the is no trace of them in device event logs - only in Wireless Health pages in dashboard.

BR, Pawel.

Dinger
Community Member
Seeing the same thing here and have also downgraded which made no difference.

hjherron
Community Member

Has anyone seen any improvements with this? I recently update to 26.6.1 and started having auth issues with my RADIUS and WPA2 SSID's. Prior to this firmware version I had no issues so I am looking to roll back but was wondering if any of you had found a resolution to this yet.

Review Cisco Networking for a $25 gift card