Event ID 86 — NLB Host Configuration

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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: 86
Source: Microsoft-Windows-NLB
Version: 6.0
Symbolic Name: MSG_WARN_MIXED_CLUSTER_HOST_LIST
Message: NLB cluster [%2]: Host %5 converged with legacy host(s)%3. This is expected during rolling upgrades. Until all hosts are upgraded to the latest version, newer NLB features will not be available for use. Please upgrade all hosts to the latest OS version.

Resolve

Upgrade all hosts in the NLB cluster

A Network Load Balancing (NLB) cluster operating in a mixed mode (where hosts have different versions of an operating system installed) is only supported during rolling upgrades. Until all hosts are upgraded to the latest operating system version, newer NLB features will not be available. You should upgrade all hosts to the latest operating system version.

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