DisconnectSwitchPort method of the Msvm_VirtualSwitchManagementService class
Disconnects a virtual switch port.
Syntax
uint32 DisconnectSwitchPort(
[in] Msvm_SwitchPort REF SwitchPort
);
Parameters
-
SwitchPort [in]
-
Type: Msvm_SwitchPort
The switch port to be disconnected. See Msvm_SwitchPort.
Return value
Type: uint32
The method returns 0 if it succeeded synchronously. Any other return value indicates an error.
-
Completed with No Error (0)
-
Method Parameters Checked - Job Started (4096)
-
Failed (32768)
-
Access Denied (32769)
-
Not Supported (32770)
-
Status is unknown (32771)
-
Timeout (32772)
-
Invalid parameter (32773)
-
System is in used (32774)
-
Invalid state for this operation (32775)
-
Incorrect data type (32776)
-
System is not available (32777)
-
Out of memory (32778)
Remarks
Access to the Msvm_VirtualSwitchManagementService class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.
Examples
The following C# sample disconnects a switch port. The referenced utilities can be found in Common Utilities for the Virtualization Samples.
using System;
using System.Management;
namespace HyperVSamples
{
class DisconnectSwitchPortClass
{
ManagementScope scope = null;
ManagementObject switchService = null;
DisconnectSwitchPortClass()
{
scope = new ManagementScope(@"root\virtualization", null);
switchService = Utility.GetServiceObject(scope, "Msvm_VirtualSwitchManagementService");
}
ManagementObject GetVirtualSwitch(string switchName)
{
string query = string.Format("select * from Msvm_VirtualSwitch where ElementName = '{0}'", switchName);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, new ObjectQuery(query));
ManagementObjectCollection virtualSwitchs = searcher.Get();
ManagementObject virtualSwitch = null;
foreach (ManagementObject instance in virtualSwitchs)
{
virtualSwitch = instance;
break;
}
searcher.Dispose();
return virtualSwitch;
}
ManagementObject GetVirtualSwitchPort(ManagementObject virtualSwitch, string switchPortName)
{
ManagementObjectCollection switchPorts = virtualSwitch.GetRelated
(
"Msvm_SwitchPort",
"Msvm_HostedAccessPoint",
null,
null,
"Dependent",
"Antecedent",
false,
null
);
ManagementObject switchPort = null;
foreach (ManagementObject instance in switchPorts)
{
if (instance["ElementName"].ToString().ToLower() == switchPortName.ToLower())
{
switchPort = instance;
break;
}
}
return switchPort;
}
void DisconnectSwitchPort(ManagementObject switchPort)
{
ManagementBaseObject inParams = switchService.GetMethodParameters("DisconnectSwitchPort");
inParams["SwitchPort"] = switchPort.Path.Path;
ManagementBaseObject outParams = switchService.InvokeMethod("DisconnectSwitchPort", inParams, null);
if ((UInt32)outParams["ReturnValue"] == ReturnCode.Completed)
{
Console.WriteLine("{0} was disconnected successfully", switchPort.Path.Path);
}
else
{
Console.WriteLine("Failed to disconnect {0} switch port.", switchPort.Path.Path);
}
inParams.Dispose();
outParams.Dispose();
}
void Close()
{
this.switchService.Dispose();
}
static void Main(string[] args)
{
if (args != null && args.Length != 2)
{
Console.WriteLine("DisconnectSwitchPort switchFriendlyName switchPortFriendlyName");
Console.WriteLine("Example: DisconnectSwitchPort MyFirstSwitch \"My Switch Port\"");
return;
}
DisconnectSwitchPortClass disconnectSwitchPort = new DisconnectSwitchPortClass();
ManagementObject virtualSwitch = disconnectSwitchPort.GetVirtualSwitch(args[0]);
ManagementObject virtualSwitchPort = disconnectSwitchPort.GetVirtualSwitchPort(virtualSwitch, args[1]);
disconnectSwitchPort.DisconnectSwitchPort(virtualSwitchPort);
virtualSwitch.Dispose();
virtualSwitchPort.Dispose();
disconnectSwitchPort.Close();
}
}
}
The following VBScript sample disconnects a switch port.
option explicit
dim objWMIService
dim switchService
dim fileSystem
const wmiSuccessful = 0
Main()
'-----------------------------------------------------------------
' Main
'-----------------------------------------------------------------
Sub Main()
dim computer, objArgs, friendlyName
dim switchFriendlyName, switchPortFriendlyName
dim switch, switchPort
set objArgs = WScript.Arguments
if WScript.Arguments.Count = 2 then
switchFriendlyName = objArgs.Unnamed.Item(0)
switchPortFriendlyName = objArgs.Unnamed.Item(1)
else
WScript.Echo "usage: cscript DisconnectSwitchPort SwitchFriendlyName SwitchPortFriendlyName"
WScript.Echo "Example: DisconnectSwitchPort ""My First Switch"" ""First VirtualSwitch Port"""
WScript.Quit(1)
end if
set fileSystem = Wscript.CreateObject("Scripting.FileSystemObject")
computer = "."
set objWMIService = GetObject("winmgmts:\\" & computer & "\root\virtualization")
set switchService = objWMIService.ExecQuery("select * from Msvm_VirtualSwitchManagementService").ItemIndex(0)
set switch = GetVirtualSwitch(switchFriendlyName)
if (switch Is Nothing) then
WriteLog Format1("Unable to find switch '{0}'.", switchFriendlyName)
WScript.Quit(1)
end if
set switchPort = GetVirtualSwitchPort(switch, switchPortFriendlyName)
if (switchPort Is Nothing) then
WriteLog Format1("Unable to find switchPort '{0}'.", switchPortFriendlyName)
WScript.Quit(1)
end if
if DisconnectSwitchPort(switchPort) then
WriteLog "Done"
WScript.Quit(0)
else
WriteLog "DisconnectSwitchPort failed"
WScript.Quit(1)
end if
End Sub
'-----------------------------------------------------------------
' Retrieve VirtualSwitch
'-----------------------------------------------------------------
Function GetVirtualSwitch(friendlyName)
dim query
set GetVirtualSwitch = Nothing
query = Format1("select * from Msvm_VirtualSwitch where ElementName = '{0}'", friendlyName)
set GetVirtualSwitch= objWMIService.ExecQuery(query).ItemIndex(0)
End Function
'-----------------------------------------------------------------
' Retrieve VirtualSwitchPort
'-----------------------------------------------------------------
Function GetVirtualSwitchPort(switch, switchPortFriendlyName)
dim query, switchPort, switchPorts
set GetVirtualSwitchPort = Nothing
query = Format1("ASSOCIATORS OF {{0}} WHERE resultClass = Msvm_SwitchPort", switch.Path_.Path)
set switchPorts= objWMIService.ExecQuery(query)
for each switchPort in switchPorts
if lcase(switchPort.ElementName) = lcase(switchPortFriendlyName) then
set GetVirtualSwitchPort = switchPort
end if
next
End Function
'-----------------------------------------------------------------
' Disconnect a virtual switch by calling DisconnectSwitchPort WMI method
'-----------------------------------------------------------------
Function DisconnectSwitchPort(virtualSwitchPort)
dim objInParam, objOutParams
DisconnectSwitchPort = false
set objInParam = switchService.Methods_("DisconnectSwitchPort").InParameters.SpawnInstance_()
objInParam.SwitchPort = virtualSwitchPort.Path_.Path
set objOutParams = switchService.ExecMethod_("DisconnectSwitchPort", objInParam)
if objOutParams.ReturnValue = wmiSuccessful then
DisconnectSwitchPort = true
else
WriteLog Format1("DisconnectSwitchPort failed with error code {0}", objOutParams.ReturnValue)
end if
End Function
'-----------------------------------------------------------------
' Create the console log files.
'-----------------------------------------------------------------
Sub WriteLog(line)
dim fileStream
set fileStream = fileSystem.OpenTextFile(".\DisconnectSwitchPort.log", 8, true)
WScript.Echo line
fileStream.WriteLine line
fileStream.Close
End Sub
'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format1(myString, arg0)
Format1 = Replace(myString, "{0}", arg0)
End Function
Requirements
| Minimum supported client |
None supported |
| Minimum supported server |
Windows Server 2008 |
| End of client support |
None supported |
| End of server support |
Windows Server 2012 |
| Namespace |
Root\Virtualization |
| MOF |
|