I have a d-Link DIR615 router provided to me by my ISP, and a Vigor2900G router. I used to have the Vigor router as my main router, but since I upgraded my internet connection and speed, the Vigor can't reach the max speed, whereas the d-Link can. I want to connect these two routers together so that the d-Link will still serve as the primary router and the Vigor as a VPN server, but I can't seem to accomplish this. All of my devices are connected to a 16-port Dell switch.
Can someone possibly help?