How to Configure Network Load Balancing for Configuration Manager Site Systems
Windows Server 2003 network load balancing distributes client requests across a set of servers and supports up to 32 computers running Windows Server 2003 in a single cluster. When network load balancing is installed as a network driver on each of the member servers, or hosts, in a cluster, the cluster presents a virtual Internet Protocol (IP) address or FQDN to client requests. The client requests go to all the hosts in the cluster, but only the host to which a given client request is mapped accepts and handles the request.
Using network load balanced site systems allows for scalability and support of Configuration Manager 2007 clients when supporting more than 25,000 clients at one site. It is supported to configure the management point, software update point, and server locator point site systems in network load balancing configurations. Default management point and the active software update point site roles can be configured to use network load balanced virtual server site systems from within the Configuration Manager console. However, server locator point site systems configured as network load balancing clusters must be defined during client installation using the /SMSSLP=<server locator point NLB cluster name> command line option.
Before beginning these procedures, ensure that the site systems that will be part of the NLB cluster have been properly installed and are functioning correctly. For more information about adding site system roles to Configuration Manager 2007 site systems, see How to Add New Site System Roles.
注意
Each member of the NLB cluster must be configured using a static IP address. Dynamic updates, where the name of the cluster is automatically registered by the host when the host starts, are not supported for site system network interface cards configured as part of the NLB cluster. In order for clients to locate the NLB cluster name using DNS, a host (A) record must be manually created in DNS for the NLB cluster name before beginning this procedure.
Configuring Network Load Balancing for Configuration Manager Site Systems
Only unicast mode is supported when configuring network load balancing for Configuration Manager 2007 site systems. When the site systems that will be part of the NLB cluster have only one network interface card installed, the following procedure should be performed from a domain member server that will not be part of the NLB cluster.
注意
The following procedures can be used to implement network load balancing for Windows Server 2003 Configuration Manager 2007 site systems. For information about implementing network load balancing for Configuration Manager 2007 SP1 Windows Server 2008 site systems, see Implementing a New Network Load Balancing Cluster.
To configure Network Load Balancing for Configuration Manager site system computers using NLB.exe
Click Start, click All Programs, click Administrative Tools, and then click Network Load Balancing Manager.
On the menu bar, click Cluster, and then click New to open the Cluster Parameters dialog box.
On the Cluster Parameters dialog box, enter the network load balancing cluster IP configuration information:
IP address: NLB cluster IP address registered in DNS
Subnet mask: NLB cluster IP address subnet mask registered in DNS
Full Internet name: FQDN of NLB cluster name registered in DNS
Ensure Unicast is selected in Cluster operation mode (default) and click Next.
On the Cluster IP Addresses page, click Next.
On the Port Rules page, click Edit to define the ports that the NLB cluster will respond to, and configure the ports used for client to site system communication defined for the site, or click Next to allow the NLB cluster IP address to respond to all TCP/IP ports.
On the Connect page, enter a site system host name that will be part of the NLB cluster in Host: and click Connect.
In Interfaces available for configuring a new cluster, select the networking interface that will be configured to respond to NLB cluster communication and click Next.
On the Host Parameters page, review the information displayed to ensure that the Dedicated IP configuration settings display the dedicated host IP configuration for the correct NLB cluster host, the Initial host state Default state: is Started, and click Finish.
注意
The Host Parameters page also displays the NLB cluster host priority (1-32). As new hosts are added to the NLB cluster, the host priority must be different than previously added hosts. The priority is automatically incremented when using the Network Load Balancing Manager.
Click <NLB cluster name> and ensure that the NLB host interface Status displays Converged before continuing (this step may require refreshing the NLB cluster display as the host TCP/IP configuration is being modified by NLB manager).
To add additional hosts to the NLB cluster, right-click <NLB cluster name>, click Add Host to Cluster, and repeat steps 7 through 10 for each site system that will be part of the NLB cluster.
Additional Requirements for Management Point Site Systems Configured as Part of NLB Clusters
When configuring network load balancing for Configuration Manager 2007 management point site system computers for sites configured to operate in mixed mode, additional steps must be taken to enable Configuration Manager 2007 client approval.
重要
This procedure is unnecessary for sites configured to operate in native mode. In native mode client authentication is accomplished using SSL certificates and configuring an application pool service account SPN in Active Directory Domain Services is not required.
After configuring the NLB cluster in mixed mode sites, an Internet Information Services (IIS) application pool service account must be created in Active Directory Domain Services and a Service Principal Name (SPN) registered for the account. Once the service account has been created, and the SPN registered, the account must be configured to run the CCM Windows Auth Server Framework Pool in Internet Information Services (IIS) Manager on each management point configured as part of the network load balancing cluster.
For more information about registering an SPN for Configuration Manager management point site systems configured in an NLB cluster, see How to Configure an SPN for NLB Management Point Site Systems.
重要
Before beginning this procedure, the IIS application pool service account must be added to the Administrators and IIS_WPG local groups on each management point configured as part of the NLB cluster.
To configure the IIS Application Pool Service Account for Management Point Site Systems Configured in Network Load Balancing Clusters
Click Start, click All Programs, click Administrative Tools, and click Internet Information Services (IIS) Manager to open the Internet Information Services (IIS) Manager console.
Expand <computer name>, expand Application Pools, right-click CCM Windows Auth Server Framework Pool and click Properties.
In the CCM Windows Auth Server Framework Pool Properties, click the Identity tab.
Select Configurable and enter the application pool service account User name: and Password: information and click OK. Confirm the application pool service account password in the Confirm Password dialog box.
See Also
Tasks
How to Configure an SPN for NLB Management Point Site Systems
How to Configure the Default Management Point for a Site
How to Configure the Intranet FQDN of an NLB Management Point
How to Configure HTTP Communication for Roaming and Site Assignment
Concepts
Configuration Manager and Network Load Balancing Clusters
Configuration Manager and Service Location (Site Information and Management Points)