Setting up TCP/IP and VTAM® subplexes
within a sysplex requires some preparation.
Steps for preparing your sysplex for subplexing
You need to plan how many subplexes are needed, assign
group IDs, ensure that all TCP/IP stacks and VTAM nodes in the sysplex are at z/OS® V1R8 or later, and assign VLAN IDs as needed.