w2indow server 2019, how to figure virtual ethernet switch connections in hyper-V

1. Using Hyper-V Manager (GUI)
2. Open Hyper-V Manager.
3. In the Actions pane, select Virtual Switch Manager.
4. This shows all Virtual Switches (External, Internal, Private) on the host.
5. To see which VM is connected to which switch:
   • Select a VM in Hyper-V Manager.
   • Click Settings…
   • Go to Network Adapter → check the Virtual Switch it’s connected to.
6. Using PowerShell (CLI)

PowerShell gives a faster, scriptable way to check all connections.

List all virtual switches

Get-VMSwitch

• Name: Switch name
• SwitchType: External/Internal/Private
• NetAdapterInterfaceDescription: Shows which physical NIC (for External switches) is used

List VMs and their connected switches

Get-VM | ForEach-Object {
    $vm = $_
    $vm.NetworkAdapters | ForEach-Object {
        [PSCustomObject]@{
            VMName = $vm.Name
            AdapterName = $_.Name
            SwitchName = $_.SwitchName
        }
    }
}

• This outputs each VM, its network adapter, and the virtual switch it is connected to.

Check which VMs are using a specific switch

Get-VM | Get-VMNetworkAdapter | Where-Object {$_.SwitchName -eq "YourSwitchName"} | Select VMName, Name, SwitchName

3. Mapping Virtual to Physical NICs

For External switches, you may want to know which physical NIC is bound:

Get-VMSwitch | Select Name, SwitchType, NetAdapterInterfaceDescription

• This shows which physical NIC the external switch is using.
• Internal switches don’t bind to a physical NIC.
• Private switches exist only inside Hyper-V host, no external connectivity.

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hth

Marcin