A cluster node is an iSeries™ system or logical partition that is a member of a cluster.
Each cluster node is identified by an 8-character cluster node name that is associated with one or more IP addresses that represent an iSeries system. When configuring a cluster, you can use any name that you want for a node in the cluster. However, it is recommended that the node name be the same as the host name or the system name.
Cluster communications makes use of the TCP/IP protocol suite to provide the communications paths between cluster services on each node in the cluster. The set of cluster nodes that are configured as part of the cluster is referred to as the cluster membership list.