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Failed connection to SSID (x) on AP (x) during association - error_code='55'
Good day everyone
I have some users on my Wireless LAN that are failing to connect to an SSID. This SSID is open with only Radius authentication.
The building is quite a dense Wireless network with a lot of AP's. 802.11r is enabled on the AP's as well.
The error code when looking from the Network Wide > Clients > Roaming point of view is: Failed connection to SSID (x) on AP (x) during association
When looking at the Meraki logs, the error code is as follows: auth_mode='wpa2-802.1x' 11k='1' 11v='1' ft='1' reassoc='1' error_code='55' radio='1' vap='0' channel='100' rssi='51'
Does anybody know what the cause of this error code might be? I have looked through all documentation and I can't find anything on error code 55.
Thanks in advance
Etienne
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Is that access point setup on the radius server end as a NAS
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Hi Blake. The AP's are all added to an ISE with all Users' credentials.
This issue is intermittent. There will be a lot of successful connections to an AP and then sometimes a user would fail to connect.
This happens at random with random users in the network and random AP's. I have not been able to replicate the issue with a specific user or a specific AP.
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Have you verified that all your AP’s are in the right subnet?
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.
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I have confirmed that all AP's are in the same subnet. All of their IP's are static and are added to ISE for authentication
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Try disabling the 802.11r.
While many customers enable 802.11r within their network without issue, some legacy devices may not connect to an 802.11r network. 802.11r is a recommended feature due to its many benefits, however a device audit is encouraged first to ensure that mission critical devices are not affected.
Please, if this post was useful, leave your kudos and mark it as solved.
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This would be my advice too… or turn on ’adaptive’ - although I’ve seen this cause issues too but at least your Apple devices would still benefit.
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Anything showing up from that page ? :
Is the device able to connect or it fails at random times ?
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Are these Windows 10/11 devices that are connecting, then losing connection when roaming to a new access point?
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That + Intel NIC + MR29.XX firmware that would be my guess
