The cluster interconnect is a dedicated network connection PRIMECLUSTER uses for communication processing between nodes and it is the most basic building block of a cluster. Cluster interconnect redundancy is highly recommended to prevent cluster partition due to failure of cluster interconnect.
In addition to heartbeat requests, the cluster interconnects carry messages between nodes such as notification of events, communications between processes, and cluster file access. Additional details are discussed in the chapter "Chapter 3 Cluster interconnect details" later in this document.
