Microsoft KB Archive/247194

= WINS Clients May Send Name Refresh Requests to Multihomed WINS Servers at 2 or 8 Minute Intervals =

Article ID: 247194

Article Last Modified on 3/1/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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This article was previously published under Q247194



SYMPTOMS
When a Windows Internet Name Service (WINS) client registers with a multihomed Windows 2000-based or Windows NT 4.0-based WINS server, the WINS client may not update the Time to Live (TTL) value of the NetBIOS name in its local NetBIOS name cache. Because of this, WINS clients may send NetBIOS name refresh requests to the multihomed WINS server at the following intervals:
 * Every 2 minutes for Windows 2000-based WINS clients.
 * Every 8 minutes for Windows NT 4.0-based WINS clients.

Also, depending on the number of WINS clients, Local Area Network (LAN) traffic and central processing unit (CPU) utilization on your multihomed WINS server may increase significantly.



CAUSE
This issue can occur if the multihomed WINS server has multiple adapters with Transport Control Protocol/Internet Protocol (TCP/IP) addresses on different subnets. When a WINS client sends a name refresh request to a multihomed WINS server, the multihomed WINS server includes the TCP/IP address of the first adapter bound to TCP/IP as the source TCP/IP address in the response sent to the WINS client. If this source TCP/IP address does not match either the primary or secondary WINS server addresses configured on the WINS client, the response is discarded.



RESOLUTION
To work around this issue, use any of the following methods:
 * For Windows NT 4.0, adjust the adapter binding order on your multihomed WINS server, so that the adapter that is on the same subnet as the WINS client is bound first to the TCP/IP protocol. Then, restart your multihomed WINS server. For Windows 2000, configure your bindings on your multihomed WINS server so that the adapter that is on the same subnet as the WINS client is bound first to the TCP/IP protocol.
 * Configure your Dynamic Host Configuration Protocol (DHCP) server to distribute a WINS TCP/IP address that matches the TCP/IP address of the adapter that is bound first to the TCP/IP protocol on your multihomed WINS server.
 * Configure your DHCP server to distribute both WINS TCP/IP addresses used by your multihomed WINS server as primary and secondary WINS server addresses.
 * Reconfigure your WINS servers to have one adapter.



STATUS
This behavior is by design.



MORE INFORMATION
For additional information about installing and configuring WINS on multihomed computers, click the article numbers below to view the articles in the Microsoft Knowledge Base:

121003 WINS Behavior on a Multihomed System

131641 NetBT Supports One IP Address per NIC

152705 Multihomed WINS Servers Send Name Query Responses

181774 Multihomed Issues with Windows NT

185786 Recommended Practices for WINS

240661 Windows Internet Naming Service Server Registration Behavior

Additional query words: multi-homed

Keywords: kbfix kbnetwork kbprb KB247194

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