Excessive LDAP traffic occurs after a Survivable Branch Appliance and an Exchange Server 2010 UM dial plan are deployed in a Lync Server 2010 environment

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Article ID: 2735316 - View products that this article applies to.
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Assume that you deploy a Microsoft Lync Server 2010 environment that has a Survivable Branch Appliance that runs Microsoft Lync Server 2010 components. You also deploy a Microsoft Exchange Server 2010 Unified Messaging (UM) in this environment. Then, the Lync Server 2010 Front-End service on the Survivable Branch Appliance queries Active Directory Domain Services (AD DS) for the UM dial plan object. In this situation, there is too much LDAP traffic across the WAN.

Note The Lync Server 2010 Front-End service on both the Survivable Branch Appliance and the Front-End server queries for the UM dial plan object every 10 minutes by using an LDAP query. 


To resolve this issue, install the following cumulative update:
2737915 Description of the cumulative update for Lync Server 2010: October 2012

After you install this cumulative update, the LDAP query will run every hour instead of every 10 minutes.

More information

For more information about the Survivable Branch Appliance in Lync Server 2010, go to the following Microsoft website:

General information about the Survivable Branch Appliance in Lync Server 2010


Article ID: 2735316 - Last Review: October 12, 2012 - Revision: 2.0
Applies to
  • Microsoft Lync Server 2010 Enterprise Edition
  • Microsoft Exchange Server 2010 Enterprise
kbqfe kbfix kbsurveynew kbexpertiseinter KB2735316

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