Article ID: 291959 - View products that this article applies to.
This article was previously published under Q291959
When you attempt to connect to a Network Load Balancing (NLB) cluster host from another cluster host by using NLB Manager, you may receive the following error message:
Connections through NLB Manager to an NLB cluster host from non-cluster hosts are successful. Only those connections initiated from other cluster hosts are unsuccessful.
The RPC server is unavailable
This behavior occurs because cluster hosts contain only one network adapter, and cluster hosts function in unicast mode. This functionality is a limitation of the single-network-adapter unicast NLB configuration.
For additional information about these limitations, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/197999/EN-US/ )Single Network Interface Card Limitations with WLBS
To work around this issue, use any of the following methods:
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