How to Clear a PXE Advertisement For a Configuration Manager Collection

Artículo
05/03/2011

Applies To: System Center Configuration Manager 2007, System Center Configuration Manager 2007 R2, System Center Configuration Manager 2007 R3, System Center Configuration Manager 2007 SP1, System Center Configuration Manager 2007 SP2

To clear a PXE advertisement for a Microsoft System Center Configuration Manager 2007 collection, you call the ClearLastNBSAdvForCollection Method in Class SMS_Collection method.

Clearing a PXE advertisement forces the PXE server to re-evaluate the mandatory advertisement that a PXE device must execute on the next PXE boot. It is most often used when the last advertisement that was executed failed or when the advertisement must be re-run. For information about clearing the PXE advertisement for a resource, see How to Clear a PXE Advertisement for a Configuration Manager Resource.

To clear a PXE advertisement for a collection

Set up a connection to the SMS Provider. For more information, see About the SMS Provider in Configuration Manager.
Get the SMS_Collection object for the collection you want to clear the PXE advertisement for.
Call the ClearLastNBSAdvForCollection method to clear the PXE advertisement for the collection.

Example

The following example clears the PXE advertisement for the collection that is identified by the collectionID parameter.

For information about calling the sample code, see Calling Configuration Manager Code Snippets.

Sub ClearPxeAdvertisementCollection (connection, collectionID)

    On Error Resume Next 
    Dim collection
    
    ' Get the collection.
    Set collection = connection.Get("SMS_Collection.CollectionID='" & collectionID & "'")
        
    result = collection.ClearLastNBSAdvForCollection
    
    if Err.number <> 0 Then
        WScript.Echo "Failed to clear PXE advertisement for collection: " & collectionID
        Exit Sub
    End If
    
End Sub

public void ClearPxeAdvertisementCollection(WqlConnectionManager connection, string collectionID)
{
    try
    {
        // Get the collection.
        IResultObject collection = connection.GetInstance(@"SMS_Collection.CollectionID='" + collectionID + "'");

        Dictionary<string, object> inParams = new Dictionary<string, object>();
        IResultObject outParams = collection.ExecuteMethod("ClearLastNBSAdvForCollection", inParams);

        if (outParams == null || outParams["StatusCode"].IntegerValue != 0)
        {
            Console.WriteLine
                ("Failed to clear PXE advertisement for collection " + collection["Name"].ToString());
            return;
        }
    }
    catch (SmsException e)
    {
        Console.WriteLine("Failed to clear PXE advertisement " + e.Message);
    }
}

The example method has the following parameters:

Parameter	Type	Description
connection	Managed: WqlConnectionManager VBscript: SWbemServices	A valid connection to the SMS Provider.
collectionID	Managed: String VBScript: String	The resource identifier. You can obtain this from the SMS_Collection class CollectionID property.

Compiling the Code

The C# example has the following compilation requirements:

Namespaces

System

System.Collections.Generic

System.Text

Microsoft.ConfigurationManagement.ManagementProvider

Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine

Assembly

microsoft.configurationmanagement.managementprovider

adminui.wqlqueryengine

Robust Programming

For more information about error handling, see About Configuration Manager Errors.

Security

For more information about securing Configuration Manager applications, see About Securing Configuration Manager Applications.

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