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Event ID 97 — NLB Host Configuration

Applies To: Windows Server 2008

Hosts in a Network Load Balancing (NLB) cluster are configured to load balance network traffic. Host configuration is set by using NLB Manager, and if it is not configured properly, the NLB cluster may not function correctly.

 

Event Details

Product: Windows Operating System
ID: 97
Source: Microsoft-Windows-NLB
Version: 6.0
Symbolic Name: MSG_ERROR_UNSUPPORTED_LEGACY_HOST_DETECTED
Message: NLB cluster [%2]: An unsupported legacy host %3 was discovered on the network. The OS version on this host is no longer supported in a mixed cluster configuration. The cluster will remain in the converging state until all deprecated legacy hosts are removed. Please remove the deprecated hosts from the cluster.

Resolve

Remove deprecated host

If an unsupported legacy host is discovered on the Network Load Balancing (NLB) cluster, you should remove the legacy host from the cluster. The cluster will remain in a converging state until all deprecated legacy hosts are removed.

When you are using Network Load Balancing (NLB) Manager, you must be a member of the Administrators group on the host that you are configuring, or you must have been delegated the appropriate authority. If you are configuring a cluster or host by running NLB Manager from a computer that is not part of the cluster, you do not have to be a member of the Administrators group on that computer.

To remove the host from an NLB cluster:

  1. Click Start, click Administrative Tools, and then click Network Load Balancing Manager. You can also open NLB Manager by typing Nlbmgr at a command prompt.
  2. If NLB Manager does not list the cluster, connect to the cluster.
  3. To remove a single host, right-click the host on which you want to disable NLB, and click Delete Host.

 

Verify

When you are using nlb.exe, you must be a member of the Administrators group on the host that you are configuring, or you must have been delegated the appropriate authority. If you are configuring a cluster or host by running nlb.exe from a computer that is not part of the cluster, you do not have to be a member of the Administrators group on that computer.

To verify that all Network Load Balancing (NLB) hosts are in the converged state:

  1. Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
  2. Type nlb.exe query, which displays the current cluster state and the list of host priorities for the current hosts of the cluster.
  3. Confirm that all hosts display converged as their current state.

NLB Host Configuration

NLB Cluster