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Configuring load balancing

Published: January 11, 2010

Updated: February 1, 2011

Applies To: Unified Access Gateway

When you configure the Forefront UAG DirectAccess server from the Forefront UAG DirectAccess Configuration Wizard, the wizard identifies if Forefront UAG is currently configured as an array (that is, as an array manager server with at least one joined array member). When Forefront UAG is configured as an array, the load balancing page enables you to select a method for Network Load Balancing (NLB). This topic describes how to select the appropriate NLB method.

Forefront UAG DirectAccess supports two methods of load balancing:

  • Windows Network Load Balancing—Integrates the NLB functionality provided by Windows Server 2008 R2 with additional functionality provided by Forefront UAG, enabling the load balancing of Forefront UAG DirectAccess servers.

  • External Load Balancing—Uses an external load balancing solution that enables the load balancing of Forefront UAG DirectAccess servers.

  1. From the Forefront UAG DirectAccess Configuration Wizard, in the DirectAccess Server box, click Configure. If a Forefront UAG array is already configured, the load balancing page appears.

  2. Select the load balancing method to use, and then click Next.

    noteNote:
    The Forefront UAG DirectAccess Configuration Wizard checks that all prerequisites for the selected NLB method have been met. If not all the prerequisites have been met, follow the actions described in the error messages, and then click Next.

    ImportantImportant:
    Install the Windows NLB Hotfix (KB977342) (http://go.microsoft.com/fwlink/?LinkId=178582), on all Forefront UAG DirectAccess array members to provide ISATAP connectivity when integrated Windows Network Load Balancing is configured.

    For instructions on configuring the next stage of the Forefront UAG DirectAccess Configuration wizard, see Assigning IP addresses to the server interfaces.

 
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