Reserve one or more external virtual networks for exclusive use by virtual machines

For more information about best practices and scans, see Best Practices Analyzer.

Property	Details
Operating System	Windows Server 2016
Product/Feature	Hyper-V
Severity	Error
Category	Configuration

In the following sections, italics indicates UI text that appears in the Best Practices Analyzer tool for this issue.

Issue

All external virtual networks are configured for use by both the management operating system and virtual machines.

Impact

Networking performance may be degraded in the management operating system.

Resolution

Use Virtual Switch Manager to stop sharing an external virtual network with the management operating system.

To stop sharing the external virtual network with the management operating system

1. Open Hyper-V Manager. Click Start, point to Administrative Tools, and then click Hyper-V Manager.

2. From the Actions menu, click Virtual Switch Manager.

3. Under Virtual Switches, click the name of the external virtual switch.

4. In the Connection type area, under the name of the physical network adapter, clear the Allow the management operating system to share this network adapter check box.

5. Click OK.