I have a network with an ER605 router, to which are connected a TL-SG1428PE switch, two EAPs (an EAP650 and an EAP610), and an OC200 controller. I'm trying to configure two SSIDs and two LANs with different IP addresses: 192.168.0.1/24 for the default LAN (ID 1) and 172.16.0.1/16 for the IoT LAN (ID 176). Initially, everything goes well: devices obtain an IP address and connect to the internet. But after several hours, devices connected to the IoT network lose their connection (they no longer have an IP address), and some devices on the default network also lose their connection (IP address loss). I tried putting the IoT SSID on the same LAN as the default SSID (192.168.0.1), but I have the same problem: IP address loss. I've noticed that on the default LAN (192.168.0.1), the EAP650 loses the connection most often. Clients connected to the EAP610 are less likely to lose their connection. All firmware is up to date.

Does anyone have a solution?