I am trying to turn my old router to an access point for the new router, I assigned an IP address in the range of the new one and when I went to disable DHCP there was another option which is Relay and when activated you have to fill a field "DHCP Server for IP Relay Agent". So my question is what's the difference between the two options? knowing that I tried to go with the relay option and I entered the DHCP Server as the new router and it worked, I got internet access and dynamic IPs. what would be the difference if I checked the disabled option in terms of IP assigning, does the old router pick up the configuration by itself or I am viewing this topic the wrong way?.
and if I may ask does the "Direction" setting affect this operation? because it was set to none.