Hi, the problem was due to the DHCP Snooping feature of the T1500G-10MPS. Menu Network Security, DHCP Snooping, Global config, enable the used VLANs, then Port Config and set all ports as Trusted,...

Model : Hardware Version : Firmware Version : ISP : Hello, I've a small office network with an AC500 controller, a TP-1500G-10MBPS PoE switch and two CAP1750; there are two SSID ("guests" and...