Link>
Welcome!What Hardware version is your router? Look at sticker under router.
Link>What
Firmware version is currently loaded? Found on routers web page under status.
What region are you located?
Are you wired or wireless connected to the router?
Has a Factory Reset been performed?
This model modem device has a built in router and WiFi already.
If this modem has a built in router, it's best to bridge the modem. Having 2 routers on the same line can cause connection problems.
Double NATTo tell if the modem is bridged or not, look at the routers web page, Status/Device Info/Wan Section, if there is a 192.168.0.# address in the WAN IP address field, then the modem is not bridged.
If the modem can't be bridged then see if the modem has a DMZ option and input the IP address the router gets from the modem and put that into the modems DMZ.
Please also review this:
Bridge Mode vs Relay vs Acess Point (AP) / Routers vs Dedicated Access Points (AP)If the ISP modem can not be bridge, or the ISP Modems DMZ can not be accessible or is not made available, and ISP Modems onboard WiFi disabled, it's possible to use the 645 as an AP however you'd be defeating most of the features that the 645 comes with. This is a good router.