The DHCP server option on Belkin routers is enabled by default but you have an option to disable it if you already have an existing DHCP server in your network. Disabling the DHCP server allows your Belkin router to act as a switch when cascaded to the main router.
This article helps you disable the DHCP Server on the Belkin router.
Open any web browser on your computer.
In the address bar, enter "192.168.2.1" and press [Enter] on your keyboard. You will then be directed to the router's web-based setup page.
Click Login on the upper right corner.
Once prompted to log in, leave the Password field blank and click the Submit button.
Under the LAN Setup section, click LAN Settings.
Look for the DHCP Server section and check if it is set to Off. Click the Apply Changes button to save the changes. The new settings will only take effect once the router reboots.