Networks

As an independent, layered component of AIX®, HACMP™ is designed to work with any TCP/IP-based network. Nodes in an HACMP cluster use the network to allow clients to access the cluster nodes, enable cluster nodes to exchange heartbeat messages, and, in concurrent access environments, serialize access to data.

HACMP defines two types of communication networks, characterized by whether these networks use communication interfaces based on the TCP/IP subsystem (TCP/IP-based), or communication devices based on non-TCP/IP subsystems (device-based).