Initialization

The REX task attaches the port redirector task during RSCS initialization. The port redirector task can also be stopped, and restarted, by the TCPIP command (see z/VM: RSCS Networking Operation and Use). When started, the PRD task waits to receive work from TCPNJE link driver tasks.

The PRD task can support up to 16 active TCP/IP virtual machines with a maximum of 64 active ports for each virtual machine. It uses one IUCV connection to communicate with each TCP/IP virtual machine.