@Kevin_Z the mode of WR841N is AP with static ip and dhcp disable. With the same settings before the vdsl (current status) when I had adsl it was OK.

I have a modem router from my ISP provider and the speed is: 2.4Ghz(ssid) D:53Mbps U:10Mbps & 5Ghz(ssid): D:101Mbps U:10Mbps. From my modem router and with utp cable (cat5) i've connected an Access...