Symptoms
When a client computer logs on to a domain that includes Microsoft Windows Server 2003-based domain controllers and Active Directory directory service sites, the client computer is authenticated by a remote domain controller instead of by the local domain controller. Additionally, you may receive an event that is similar to the following in the System event log of the local Windows Server 2003-based domain controller:
If you examine the Netlogon.log file on the Windows Server 2003-based domain controller, you may find text entries that are similar to the following in the Netlogon.log file:07/22 10:02:32 netbios_Domain_Name : NO_CLIENT_SITE: Client_Name Client_IPaddress
07/22 10:02:32 netbios_Domain_Name : NO_CLIENT_SITE: Client_Name Client_IPaddress
07/22 10:03:07 netbios_Domain_Name : NO_CLIENT_SITE: Client_Name Client_IPaddress
Note netbios_Domain_Name is the NetBIOS name of the domain. Client_Name is the name of the client computer. Client_IPaddress is the IP address of the client computer.
Cause
This issue may occur if the following conditions are true:
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The IP address of the client computer is not defined.
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The IP address of the client computer is not mapped to an existing site in the Subnets folder of the Active Directory Sites and Services snap-in on the local domain controller.
Resolution
To resolve this issue, define the IP address of the client computer in the Subnets folder, and then map the IP address to the site that contains the local domain controller. To do this, follow these steps:
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Click Start, point to Programs, point to Administrative Tools, and then click Active Directory Sites and Services.
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In the left pane, locate and then click the Sites\Subnets folder.
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Right-click Subnets, and then click New Subnet.
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In the Address box, type the IP address of the client.
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In the Mask box, type the subnet mask of the client.
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In the Site Name list, click the site object that you want to join the client to, and then click OK.
Note When you select a site object, you have to select the site object that contains the local domain controller. -
On the File menu, click Exit to close Active Directory Sites and Services.
