How to Set the Response Delay for a PXE Service Point
Updated: November 1, 2013
Applies To: System Center 2012 Configuration Manager, System Center 2012 Configuration Manager SP1, System Center 2012 R2 Configuration Manager
In System Center 2012 R2 Configuration Manager, you set the operating system deployment PXE service point response delay by updating ResponseDelay embedded property. ResponseDelay specifies how long the delay should be for this PXE service point before it responds to computer requests when multiple PXE service points are used. By default, the System Center 2012 R2 Configuration Manager PXE service point will respond immediately to the network PXE requests.
The delay is provided by the PXE client, and it shows the time that has passed since the client started the PXE boot process (seconds elapsed since client began address acquisition or renewal process). A client sends requests to the server at intervals of 0 (default), 4, 8, 16, or 32 seconds.
To set the response delay for a PXE service point
Set up a connection to the SMS Provider. For more information, see About the SMS Provider in Configuration Manager.
Make a connection to the distribution point instance with PXE enabled.
Get the embedded properties.
Update the ResponseDelay embedded property.
Commit the changes to the site control file.
Example
The following example method sets the response delay for a PXE service point.
For information about calling the sample code, see Calling Configuration Manager Code Snippets.
public void SetResponseDelay(WqlConnectionManager connection, string siteCode, string serverName, int delay){ try { //Connect to distribution point instance. IResultObject siteRole = connection.GetInstance("SMS_SCI_SysResUse.FileType=2,ItemName=\"[\\\"Display=\\\\\\\\" + serverName + "\\\\\\\"]MSWNET:[\\\"SMS_SITE=" + siteCode + "\\\"]\\\\\\\\" + serverName + "\\\\,SMS Distribution Point\",ItemType=\"System Resource Usage\",SiteCode=" + "\"" + siteCode + "\""); // Create temporary copy of the embedded properties. Dictionary<string, IResultObject> embeddedProperties = siteRole.EmbeddedProperties; // Enumerate through the embedded properties and makes changes as needed. foreach (KeyValuePair<string, IResultObject> kvp in siteRole.EmbeddedProperties) { // Setting: ResponseDelay if (kvp.Value.PropertyList["PropertyName"] == "ResponseDelay") { // Get current property value. Console.WriteLine(); Console.WriteLine("Property: {0}", kvp.Value.PropertyList["PropertyName"]); Console.WriteLine("Current value: {0}", kvp.Value.PropertyList["Value"]); // Change value. embeddedProperties["ResponseDelay"]["Value"].IntegerValue = delay; Console.WriteLine("Setting the {0} value to {1}.", kvp.Value.PropertyList["PropertyName"], delay); } } // Store the settings that have changed. siteRole.EmbeddedProperties = embeddedProperties; // Save the settings. siteRole.Put(); } catch (SmsException ex) { Console.WriteLine(); Console.WriteLine("Failed. Error: " + ex.InnerException.Message); }}
Compiling the Code
The C# example has the following compilation requirements:
System
System.Collections.Generic
System.Text
Microsoft.ConfigurationManagement.ManagementProvider
Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine
microsoft.configurationmanagement.managementprovider
adminui.wqlqueryengine
Robust Programming
For more information about error handling, see About Configuration Manager Errors.
.NET Framework Security
For more information about securing Configuration Manager applications, see Securing Configuration Manager Applications.
About Operating System Deployment Site Role Configuration
Configuration Manager Operating System Deployment
Configuration Manager Programming Fundamentals
Operating System Deployment Site Role Configuration
How to Read and Write to the Configuration Manager Site Control File by Using Managed Code
How to Read and Write to the Configuration Manager Site Control File by Using WMI
The example method has the following parameters:
Parameter
Type
Description
connection
Managed: WqlConnectionManager
A valid connection to the SMS Provider.
siteCode
Managed: String
The Configuration Manager site code.
serverName
Managed: String
The server name. For example, “SERVER1.DOMAIN1.COM”.
delay
Managed: Integer
The delay, in seconds.