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Event ID 88 — NLB Cluster Control

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Applies To: Windows Server 2008

The Network Load Balancing (NLB) cluster operates normally when all NLB components are compatible. If some components are incompatible, then you may run into issues managing and controlling the cluster.

 

 

Event Details

Product: Windows Operating System
ID: 88
Source: Microsoft-Windows-NLB
Version: 6.0
Symbolic Name: MSG_ERROR_REGISTERING_DEVICE
Message: NLB cluster [%2]: The NLB driver failed to register the device object. The cluster will converge and operate normally but controlling the cluster might not work properly. To fix this, disable all network adapters with NLB bound on this host and then re-enable the adapters.

Resolve

Disable and enable NLB network adapters

If the Network Load Balancing (NLB) driver fails to register a device, such as a network adapter, the cluster will converge and operate normally, but controlling the cluster might not work properly. You should disable all network adapters with NLB bound on this host, and then re-enable the adapters.

Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure.

To disable and re-enable all network adapters by using Network and Sharing Center:

  1. Click Start, click Network, and then click Network and Sharing Center.
  2. Under Tasks, click Manage network connections.
  3. Right-click the network adapter you want to disable, and click Disable. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
  4. Right-click the network adapter you want to enable, and click Enable. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

Verify

You ensure that you can control the Network Load Balancing (NLB) host by using NLB Manager.

When you are using 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 ensure that the NLB host is controllable:

  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. Right-click Network Load Balancing Clusters, and then click Connect to Existing.
  3. Type the name of one of the cluster hosts, and then click Connect. The NLB clusters that exist on that host will be listed at the bottom of the dialog box.
  4. Click the cluster name that you want to manage from NLB Manager, and then click Finish.
  5. Test whether you can control the host. For example, you could attempt to stop or start handling cluster traffic.

 

 

NLB Cluster Control

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