Hello, I'm trying to configure TL-ER6020 as DHCP server with more than 254 IP addresses but I always get an error "Operation Failed". Current LAN configuration: router IP: 192.168.1.1 subnet: 255.255.

I use an ER6020 (router) and a T1600G-28PS (switch). The modem (with a static IP) from the internet service provider depends on port 1 (WAN) of the router. The T1600 hangs on post 5 (LAN) of the route