Router 2 & 3 cannot be connected by LAN cable. May thread ako dati dito asking about external LAN cable, masyadong mahal and delikado sa lightning ang mga sagot sa thread ko.

My office is across the street from my house. Router 1 is in my room which is not facing the office so I need another router (router 2) that will have line of sight with router 3.

I don't have a proglem with DHCP per se. My problem is, there are times that the plug of router 2 gets unplugged accidentally, sometimes by the maids or the kids. If this happens before the computers in the office are turned on, then the office computers won't be assigned IP addresses, and they cannot see the server nor connect to the internet.