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Network Adapter Functionality

Updated: November 13, 2007

Applies To: Windows Server 2008

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.

Events

Event ID Source Message

9

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to bind to the adapter because the medium type is unsupported. Please confirm that you are trying to bind NLB to an Ethernet network adapter.

50

Microsoft-Windows-NLB

NLB cluster [%2]: NLB failed to add a multicast MAC address to the network adapter it is bound to. This happened because the maximum number of multicast MAC addresses that can be assigned to this network adapter has been exhausted. Use a network adapter that supports more multicast MAC addresses or operate NLB in unicast mode.

53

Microsoft-Windows-NLB

NLB cluster [%2]: NLB will not attach to adapter '%3' because it does not support dynamic changing of its MAC address. Replace the network adapter with one which supports that capability.

85

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to register with the Network Driver Interface Specification (NDIS) with error code %5. As a result, this host will not be an active member of the cluster. Using Control Panel or Device Manager, disable and re-enable the network adapter before attempting to bind NLB to the adapter.

89

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to attach a network adapter due to error %5. As a result, this host will not be an active member of the cluster. Using Control Panel or Device Manager, disable and re-enable the network adapter before attempting to bind NLB to the adapter.

90

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to bind to the adapter because the maximum transfer unit (MTU) reported by the adapter is too small to contain an NLB heartbeat message. Ensure that the MTU of all hosts in the cluster is set to the default value.

94

Microsoft-Windows-NLB

NLB cluster [%2]: NLB failed to update the adapter multicast list. The cluster will converge and operate normally but some client traffic might not be handled. To attempt to update the adapter multicast list again, run 'nlb reload' from a command prompt.

98

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to attach to adapter '%3' due to error %5. As a result, this host will not be an active member of the cluster. Using Control Panel or Device Manager, disable and re-enable the network adapter before attempting to bind NLB to the adapter.

Related Management Information

Network Adapter

NLB Cluster

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