TCP/IP considerations

TCP/IP ports
loopback localhost
IBM® Developer z/OS® and z/OS Debugger use the TCP/IP loopback and TCP/IP localhost definitions. Communication will fail if these definitions are set up using different TCP/IP addresses.
Multi-stack (CINET)
z/OS Communication Server allows you to have multiple TCP/IP stacks concurrently active on a single system. This is referred to as a CINET setup.
Distributed Dynamic VIPA
With Dynamic Virtual IP Addressing (DVIPA), you can concurrently run identical setups on different systems in your sysplex, and have TCP/IP, optionally with the help of WLM, distribute the client connections among these systems.

Parent topic: Debug Manager configuration reference