If you are building massive topologies (e.g., 50+ routers for CCIE studies), seeing "virtual device serial0 will start disconnected" for every single router can clutter your console logs. Here is how to mute or manage it:
If you don't need to print from the VM, the Printer device.
In a real lab, service providers provide the clock. In an emulator, you must provide it. virtual device serial0 will start disconnected
Method 1: Disconnect or Remove the Serial Port (Recommended)
While Packet Tracer is a simulator (not an emulator), it mimics this behavior for educational accuracy. If you drag a router onto the canvas and power it on without using the "Connections" cable, the startup log will display this line. If you are building massive topologies (e
Alternatively, go to in the VMware Workstation/Player menu, navigate to Devices , and ensure "Enable virtual printers" is checked if you do want to use this feature. 3. Adjust the .vmx Configuration
This message occurs when a Virtual Machine is configured to use a , but the hypervisor cannot establish the connection at boot time. Common causes include: In an emulator, you must provide it
: Once your physical connectivity and DCE/DTE relationships are set, ensure you run the no shutdown command on the interface from Cisco IOS, or the interface will remain in an "administratively down" state.
Here are the most effective solutions, ordered from simplest to most complex. 1. Disable Virtual Printing (Most Common Solution)
To help narrow down the cause of this error, could you tell me:
you aren’t alone. While it sounds like a critical hardware failure, it is usually just a configuration "ghost" left behind by old software or missing physical ports. What Does This Error Actually Mean?