Try to make 2 pcs of split cat6 cable..one end (rj45) all 8 color straight.the other end are split to 2 pair color(WO-Orange/WG-Green)(WB-Blue/WB-Brown)Both of these 2 pair be crimp in RJ45 at No.1,2,3 6(Wo-O/WG-Gr).or just simply create 2 pair color in one single cable both end have 2 rj45..connect ur 2 router (Pair1) to WAN1 Port1 the other router Pair2 to WAn2 Port2 ..then start setng up to both dynamic detection.Port3 will be ur LAN Going to ur swithch Hub( GIGABITSwith)