Protocol Requirements

TIBCO EMS Client for z/OS (MVS) must be installed and operated within an existing, fully functional, and integrated network. At a minimum, this includes:
  • The TCP/IP protocol stack within the z/OS Communications Server.
  • A DNS server that provides the hostname and host address of the z/OS client and the TIBCO EMS server.
  • Unrestricted network connectivity between the DNS, TIBCO EMS Client for z/OS (MVS), and TIBCO EMS server.

Ensure that you run a properly configured RESOLVER address space.

You have to review your TCPCONFIG parameters to ensure that they meet the needs of installation:
  • To run the TIBCO EMS Client for z/OS (MVS) non-APF authorized, the RESTRICTLOWPORTS parameter has to be used.
  • To control TCP buffering, limit storage usage, or support large bandwidth devices, the TCPSENDBFRSIZE, TCPRCVBUFRSIZE, and TCPMAXRCVBUFRSIZE parameters might be needed.
For best results, override the IBM default of 16K by setting TCPRCVBUFRSIZE and TCPSENDBFRSIZE to a minimum value of 48K.