Cable type for connecting two routers. The rule of thumb is when connecting similar devices router to router, computer to computer use a crossover cable. When connecting dissimilar devices router to switch, computer to switch use a straight through cable. Of course Auto MDIX and designated uplink ports can make this a moot point, and can make it confusing at times. Why We Use Serial Cable To Connect Two Routers Together' title='Why We Use Serial Cable To Connect Two Routers Together' />We mostly use serial links between multiples routers to. Why do we always use serial links between two routers. How do I connect the main router to router 1. Connecting two routers wired the definitive answer. Connect an ethernet cable from a numbered LAN port of the first. If you have two wireless routers. Download Mp4 Audio Codec For Windows Media Player 12 on this page. Do they have a null Cisco cable that will directly connect two serial. We normally use ISDN. Serial vs Crossover. We can connect routers with either a serial or a. Crossover cable is just a type of Ethernet cable to connect 2 switches together.