Which condition can indicate a cluster interconnect problem?

The cluster interconnect is a dedicated, high-speed network used exclusively for communication between nodes in a NetApp ONTAP cluster. It handles critical operations such as cluster heartbeat, configuration replication, and data traffic between nodes. If cluster network ports repeatedly lose connectivity (such as link flapping or dropping), it directly indicates a physical or logical issue with the cluster interconnect switches, cables, or node ports. This condition can lead to severe disruptions, including cluster partition, unexpected node takeover events, or severely degraded performance. The other options are related to storage capacity management or NAS protocol configuration, which do not impact or indicate the health of the cluster interconnect network.

B. Reaching Snapshot reserve is a storage capacity issue, not a network or cluster interconnect problem.

C. Renaming a CIFS share is a standard administrative NAS configuration task, unrelated to cluster interconnect health.

D. Modifying an NFS export policy affects client access rules, not the internal cluster network connectivity.

1. NetApp ONTAP 9 Documentation. "Network Management Guide" -> "Cluster and node management network overview."

2. NetApp ONTAP 9 Documentation. "High Availability Management Guide" -> "Understanding cluster interconnects."