NLB will not attach to adapter because it does not support dynamic changing of its MAC address Rule

  • ID:  Microsoft.Windows.NetworkLoadBalancing.6.2.NLB.will.not.attach.to.adapter.because.it.does.not.support.dynamic.changing.of.its.MAC.address
  • Description:   
  • Target:  Windows Server 2012 NLB Server Role
  • Enabled:  On Essential Monitoring

Overridable Parameters

Parameter Name Default Value Description Override
Event Collection Enabled false  

Run As Profiles

Name
Default

Rule Knowledgebase

Summary

The network adapter to which Network Load Balancing (NLB) is bound must be properly configured and capable of performing NLB operations. If the adapter is not properly configured, the NLB driver may fail to bind to the adapter.

Causes
This rule does not contain any causes.
Resolutions

Change network adapter or operate NLB in multicast mode

To operate in unicast mode, Network Load Balancing (NLB) must alter the unicast MAC address on the network adapter that it will be using. A problem occurs when the network adapter to which NLB is trying to bind does not support the dynamic changing of its unicast MAC address. To resolve this, you can either replace the network adapter with one that supports changing the unicast MAC address dynamically or operate the NLB cluster in multicast mode.

To change the cluster operation mode to multicast:

  • 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..

  • If NLB Manager does not already list the cluster, connect to the cluster.

  • Right-click the cluster, and then click Cluster Properties.

  • Click the Cluster Parameters tab, and specify Multicast in Cluster Operation Mode.

External References
This rule does not contain any external references.

See Also for Windows Server Network Load Balancing Management Pack


Downloads for Windows Server Network Load Balancing Management Pack

AZURE OPTIMIZATION ASSESSMENT GET STARTED
MIGRATION TO AZURE GET STARTED
SYSTEM CENTER MIGRATION TO AZURE GET STARTED
MIGRATION TO AZURE FOR SQL AND WINDOWS 2008 GET STARTED