NLB RPC server is unavailable on the specified computer

Posted by Robin Weston on Server Fault See other posts from Server Fault or by Robin Weston
Published on 2010-11-16T17:47:50Z Indexed on 2010/12/27 2:55 UTC
Read the original article Hit count: 384

Filed under:

windows-server-2008

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load-balancing

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nlb

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rpc

Hi guys,

Firstly, I'll admit that my networking knowledge is limited so as people request more information I'll update this question accordingly.

I am trying to create a NLB Cluster across 2 Windows Server 2008 Web Servers. Neither of the machines are members of a domain, and both have 2 NICs (one for processing external web traffic, and one for communicating internally).

I have installed NLB on both machines, and have created a cluster on Host A and added itself to it. However, when I try and add Host B (using the address from the external NIC) I get the following error : "The RPC server is unavailable on the specified computer".

On Host B I can see that the RPC service is running fine. I can also ping and RDP from Host A to Host B with no problems either. I have disabled the windows firewall on both machines but that had no effect

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