Cisco: IOU NETMAP Configuration
Demonstration of how to add virtual serial interfaces to your virtual routers in the Cisco IOU L2/L3 rack.
Note: I left this mention out in the video, but the way to distinguish between an ethernet and serial interface is first number. Ethernet interfaces all begin with either 0/x or 1/x; Serial interfaces are either 2/x or 3/x. Hope that makes sense.