Summary: between any LAN ports on each router remark the internet WAN port on the secondary router is not used 2 Disable the DHCP automatic IP distribution feature on the secondary router 3 Define the IP address of the second router as different from the DHCP range of the main router but still belonging to the same subnet e g when the primary router has 192 168 1 1 as
Image Dimensions: 572 x 326
Image originally found here.