In an ONTAP switched cluster, intracluster SnapMirror traffic travels over the cluster network because it involves data replication within the same cluster. Epsilon voting is a mechanism used to determine the master node in case of failures, and this voting traffic also occurs over the cluster network. Cluster database replication involves the propagation of cluster-related metadata and configuration information across the nodes in the cluster, which also uses the cluster network. Intercluster SnapMirror and remote cluster peering typically involve communication over external networks rather than the internal cluster network.