Event ID - 1126

Event Id1126
SourceClusSvc
DescriptionThe interface for cluster node ClusterNode on network Public Network is unreachable by at least one other cluster node attached to the network. The cluster was not able to determine the location of the failure. Look for additional entries in the system event log indicating which other nodes have lost communication with node ClusterNode. If the condition persists, check the cable connecting the node to the network. Next, check for hardware or software errors in the nodes network adaptor. Finally, check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.
Event InformationThe cluster network driver (Clusnet.sys) manages cluster communications. The cluster network driver performs the following functions:
1. Provides a uniform interface for cluster node communications that are independent of the network infrastructure.
2. Monitors the status of all communication paths in the cluster.
3. Routes intra-cluster messages over the optimal paths.
4. Detects node failures by using periodic messages that are known as "heartbeats".
5. Detects failures in network and TCP/IP communications.
Reference LinksOverview of event ID 1123 and event ID 1122 logging in Windows 2000-based and Windows Server 2003-based server clusters

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