Microsoft KB Archive/814989

= Static Routing Entry May Cause a Problem in a Cluster Environment =

PSS ID Number: 814989

Article Last Modified on 3/24/2003

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The information in this article applies to:


 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Datacenter Server

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SYMPTOMS
After you configure some static routing in a server cluster node, one cluster node may not have access to the IP address of an IP resource after the server cluster fails over to that node.



CAUSE
This behavior occurs because, when node1 has the host route to an IP address through a network interface that connects to another network segment, node 1 does not use the loopback interface for the IP address.



STATUS
This behavior is by design.



MORE INFORMATION
If you use a static route on a cluster, you may be able to detect state changes on a cluster network interface when media sense is disabled. Resources may not fail over as you expect. The Windows 2000 Cluster service depends on pinging IPs from a local IP subnet to determine the scope of network connection failure. Static route configuration may affect the result because it may route ICMP packets through another network. Therefore, client connectivity issues to the node through the client access interface affect whether programs are available to the client. The reason for this is that the Cluster service does not fail over the resource to other available nodes. You must perform additional tasks (manual or programming) to bring the resource online to serve the client.

Because some static route entries may cause this problem, Microsoft recommends that you test your configuration.

Additional query words: SAP Static route mscs cluster

Keywords: kbprb KB814989

Technology: kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000DataServ kbwin2000DataServSearch kbwin2000Search kbWinAdvServSearch kbWinDataServSearch

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