Virtual Device Serial0 Will Start Disconnected -

[[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:

A: In Dynamips/GNS3, no. The hardware state is decided at boot. You must shut down, connect the cable, and restart the router. In EVE-NG with newer QEMU images, you may hot-plug, but it is not recommended. virtual device serial0 will start disconnected

[[router R1]] image = c7200.bin serial0 = "disconnected" To this: [[router R1]] image = c7200

In a real Cisco router, Serial interfaces use . If no cable is plugged in, the interface remains "down/down." However, emulators are not real circuits. If an emulator tried to auto-detect every possible connection at boot, it would slow down the entire lab startup process. You must shut down, connect the cable, and