NLB Host Configuration

Updated: November 13, 2007

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.

 

Events

Event ID Source Message

14

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to initialize because the cluster network address %3 is invalid. Please check that the network address property of the NLB cluster is specified in a valid MAC address format.

16

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to initialize because the cluster IP address %3 is invalid. Please check that the network IP address is specified in a valid IPv4 or IPv6 address format.

17

Microsoft-Windows-NLB

NLB cluster [%2]: NLB detected a duplicate host priority %5 that is shared between cluster hosts. Each host in the NLB cluster must have a unique host priority. Please check the NLB configuration of all hosts and make sure that each has a unique host priority (a number between 1 and 32).

18

Microsoft-Windows-NLB

NLB cluster [%2]: NLB detected duplicate cluster subnets. This may be due to network partitioning, which prevents NLB heartbeats of one or more hosts from reaching the other cluster hosts. Although NLB operations have resumed properly, please investigate the cause of the network partitioning.

31

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to initialize because the cluster network mask %3 is invalid. Please check that the network mask is specified in a valid format.

34

Microsoft-Windows-NLB

NLB cluster [%2]: NLB failed to query parameters from the registry key HKLM\SYSTEM\CurrentControlSet\Services\WLBS\Parameters\Interface\%3. This might be due to an improper configuration. Please use Network Load Balancing Manager to configure NLB. Once the configuration is fixed, you should run 'nlb reload' followed by 'nlb start' from a command prompt.

35

Microsoft-Windows-NLB

NLB cluster [%2]: NLB failed to verify its parameters. This might be due to an improper configuration. Please use Network Load Balancing Manager to configure NLB. Once the configuration is fixed, you should run 'nlb reload' followed by 'nlb start' from a command prompt.

73

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB cluster IGMP multicast IP address %3 is invalid. Please check the NLB configuration and make sure that the cluster IGMP multicast IP address is in a valid format.

86

Microsoft-Windows-NLB

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.

91

Microsoft-Windows-NLB

NLB cluster [%2]: NLB received a heartbeat from a host with an invalid ID %5. Please check the NLB configuration of all hosts and make sure that each has a unique host priority (a number between 1 and 32).

97

Microsoft-Windows-NLB

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.

102

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to register for notifications with the IPv4 NSI provider. NLB will continue to operate but may not handle auto-configured IPv4 addresses correctly. Please make sure that IPv4 is installed and working on this machine.

103

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to register for notifications with the IPv6 NSI provider. NLB will continue to operate but may not handle auto-configured IPv6 addresses correctly. Please make sure that IPv6 is installed and working on this machine.

108

Microsoft-Windows-NLB

NLB cluster [%2]: The virtual IP (VIP) address %3 is invalid. The cluster will converge and operate normally without this VIP. Make sure that the VIP is specified in a valid IPv4 or IPv6 address format.

109

Microsoft-Windows-NLB

NLB cluster [%2]: The virtual network mask %3 is invalid. The cluster will converge and operate normally without this virtual IP (VIP) address. Make sure that the virtual network mask for the VIP is specified in a valid format.

110

Microsoft-Windows-NLB

NLB cluster [%2]: NLB detected an unequal number of virtual IP (VIP) addresses and network masks. For all VIP's listed for use, an equal number of network masks must be specified. The NLB cluster will continue to operate but the VIP with no corresponding network mask will be ignored. To use this VIP, make sure that the number of addresses and network masks are the same.

112

Microsoft-Windows-NLB

NLB cluster [%2]: The NLB driver failed to register for notifications with the IPv4 NSI provider. NLB will continue to operate but may not handle IPv4 addresses that are moved between nodes correctly. Please make sure that IPv4 is installed and working on this machine.

4096

Microsoft-Windows-NLB

Configuration completed. Microsoft Cluster Service is also installed on this machine, and this may prevent the proper operation of both.

Related Management Information

NLB Host

NLB Cluster

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