Configuring OSA-Express Modes

For OSA-Express adapters that run in non-QDIO mode (OSE channels), you must configure the physical port and create an OSA Address Table (OAT) to set up the data paths between the OSA and host programs. If any of these non-QDIO mode features use the default OAT without port sharing, OSA/SF is not required.

OSA-Express adapters that run in QDIO mode (OSD channels) require IOCDS definitions and host program setup. Once you have defined both the hardware and software definitions, the data path between any OSA-Direct Express adapter and the host programs are automatically set up in an OSA Address Table (OAT).

For additional information about OSA-Express and z/VM® environments, see Open Systems Adapter-Express Customer's Guide and Reference. Also, see Sample z/VM TCP/IP Profile for a sample TCP/IP profile containing statements related to OSA-Express and HiperSockets.