z/VSE's OSA-Express support
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z/VSE supports the Open Systems Adapter (OSA) Express network cards of the IBM System z processors for a long time, which always includes the support of the latest technology.
z/VSE supports the following OSA-Express features:
QDIO mode (CHPID type OSD or OSX) is used for fast data-transmission via TCP/IP. It is implemented in the z/VSE QDIO network driver.The QDIO network driver supports TCP/IP Layer 2 and 3 as well as IPv4 and IPv6 protocols. Both z/VSE TCP/IP stacks - TCP/IP for VSE/ESA and IPv6/VSE - use the QDIO network driver. The Layer 2 and IPv6 protocol is provided by IPv6/VSE only.
Non-QDIO mode (CHPID type OSE) provides backward compatibility for VTAM applications and TCP/IP applications that use the OSA-2 interface. Both TCP/IP stacks support this configuration.
You can find more information in the z/VSE Planning book on our docu
The latest supported network card is OSA-Express 5S. More information on supported network cards and z/VSE releases are here.
You may also be interested in the OSA-Express Implementation Guide, currently available as a draft. You can download it here.