| Event Id | 31 |
| Source | NLB Cluster |
| Description | Windows Server 2003 Event Text: NLB Cluster %2 %1: Cluster network mask %3 is invalid. Please check the NLB configuration and make sure that the cluster network mask consists of four decimal byte values separated by dots. %4 Windows 2000 Server Event Text: %4 %1: cluster network mask %2 is invalid. Please check %4 Setup page and make sure that it consists of four decimal byte values separated by dots. %3 |
| Event Information | This event is logged when the subnet mask entered for the cluster IP address is not valid. UserAction: Correct the subnet mask for the cluster IP address. |
| Reference Links | Network Load Balancing Event Messages (Article) |
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