The XCF function within a sysplex environment allows communication between all systems in the sysplex. The main function is the message routing capability. Any system within the sysplex can “join” a group and send and receive messages from each of the other members within the same group.
For example, if system A wanted to send a message to all other systems in the group it issues a send message to the coupling facility. The coupling facility is then responsible for posting or notifying all other “joined” systems within the group that a message is waiting for them. Each notified system is then responsible for receiving the message that was sent. The actions performed by the receiving system depend on the content of the message.
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