Users disconnects randomly with yellow exclamation marks
I have a deployment of Cisco 2802I access points, WLC is 5520 running software image 22.214.171.124, and I have a problem where some users suddenly got disconnected and got the yellow exclamation mark on the connection status
This issue affects some users on a random basis where at the same time other users can work properly, the problem usually is fixed after rebooting the access point, so any idea why this is happening ? or any fix for this
note: when users were disconnected some are still obtaining an IP address while others lose their IP connectivity,
the DHCP pool is not utilized and the SSID is using dot1x authentication with external radius server
Besides the already suggested options, you might want to try to upgrade to the latest 126.96.36.199 release, as it fixes some rare transmission issues, which you might have. Do you see anything in the clients Event Log or WLC (debug client mac-address) when that happens?
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