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Friday, October 9, 2009

Issue when creating NLB in Hyper V

There are several thing that you should take note when creating NLB using Hyper V

1. Make sure you're using External NIC for both Public and Private NIC (virtual switch)

2. When using Windows Server 2008 RTM, apply this hotfix KB953828
http://support.microsoft.com/kb/953828

3. If the VM guest is using Windows Server 2008 with SP2, no need to apply the hotfix but reinstall the Integration Services setup and reboot the VM. Double check the public NIC. If problem, manually configure the ip address of your Public NIC and Cluster IP Address. Just add additional ip address. After you have done that, you can open the NLB console and you will see that your cluster has sucessfully converged.

Please refer to my below snapshot for the error when creating NLB cluster and adding new node.

Figure: Error when creating NLB cluster

Figure: When adding additional node

4. For R2, manually set the MAC address of the interface you’ve bound NLB to on each server in the virtual machine Hyper-V settings to the MAC address assigned by the NLB service to the network interface within the guest.

Command of the day:- use WLBS Query. More info:- http://support.microsoft.com/kb/242242

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