I am trying to set up 2 router in our network with following set up. 2 routers, 1 is the main router that DHCP is enabled to assign ip to all wired PCs, the other one can be assumed for guest, which is also DHCP enabled. The main one should assign IP from 192.168.1.2 to 1.253 to wired pc and the one for guest should assign ip from 192.168.2.2 to 2.254 to guest devices.
The main router uses Tomato 1.28 while the other one uses DD-WRT v24-sp2 std. After some research I know I could set it up as this way, connect LAN port on Tomato one to WAN port on DD-WRT one. So the DD-WRT one doesn't mess up the main router's DHCP service. When I was testing, a wifi user connected to the DD-WRT router, it is assigned with an ip address as 192.168.2.100 but it didnt have Internet connection. Anyone could give me some help how exactly I should configure the DD-WRT router to make it work? Any help would be appreciated.