Virtual Device Serial0 Will Start Disconnected -

The short answer is:

[[router R1]] image = c7200.bin serial0 = "R2 serial0" This tells Dynamips to create a direct serial cable between the two virtual devices on boot. A common mistake is logging into the router and typing: virtual device serial0 will start disconnected

The root cause? The console log from boot clearly showed: "Virtual device serial0 will start disconnected" and "Virtual device serial1 will start disconnected" . The student had never connected the cables from the router to the Frame Relay switch. The short answer is: [[router R1]] image = c7200