Hi U. Richards
Thanks for your post please find my answer below:
To clarify, you're able to have other wireless clients connect to the SSID with 802.1X enabled on it, and they work fine with the exception of this single client that is having issues with throughput?
Mudassir: no it is not happening with any single or specify device, it is random problem with random client on access Points.
According to my diagnoses, it is only happening with those clients who tried multiple attempts for authentication. I have generated that issue by disconnecting clients two or three time (generated problem on window 7 and android device).
What kind of device is the client that is experiencing this trouble?
Mudassir: Any Device (windows, IOS, Android etc)
How far away is the client from the AP?
Mudassir: not dependent on the RSSI, even client with better RSSI (-50) facing issue.
Are you able to post any additional information about the client's SNR, power levels (signal), and type of radio it's using? e.g. ac/n/g/b/a? Is this on 5Ghz, or 2.4Ghz?
Mudassir: both bands facing bandwidth drop issue.
How many APs are deployed in your environment this is happening in? 1 or more?
Mudassir: 4x Access Point on single floor (200
devices on floor)
3x Floor of building