Availability of network resources
For FEPI to communicate with the network using a node, both the application minor node and the defining major node must be active, and the minor node must be in a connectable condition.
If FEPI is initialized before the z/OS® Communications Server, and is instructed to acquire this node, it retries the VTAM® OPEN request several times. Similarly, if a target application is unavailable, FEPI makes another attempt at session initiation. After this, the operator will need to intervene to establish connectivity.
Note: VTAM is now z/OS Communications Server.