I have an issue at a site which has ~60 IoT devices which are required to be on 24/7. The network has a total of 11 Meraki MR56s (FW version: MR27.5.1), and the network the IoT devices are connected to uses WPA2-PSK authentication. I have about 10 of these 60 devices which either can't connect at all, or connect for only a few minutes a day. The issue seems to be that the client IoT device successfully associates, then tries to authenticate but the authentication times out after 10 seconds (and says 'wlan0: Request to deauthenticate .... reason=3 state=ASSOCIATED'). Additionally, the client device hops around trying to connect to different APs, some which are quite far away. I've verified that passwords and everything are correct. We've tried a 5GHz only network, 2.4 GHz only network, replacing devices, setting static IPs, increasing the device DNS resolution timeout (which after further investigation I don't think was relevant). blacklisting certain BSSIDs (which isn't a practical long-term solution), disabling load-balancing, band-steering, and traffic shaping. Bandwidth minimums are on to prevent 802.11b devices, and client device packet captures don't indicate anything unusual that I can see (but I'm not an expert at understanding packet capture data). Anyone have any suggestions about how to either pinpoint why authentication is failing or improve performance?
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