About RoCE Express

Depending on your environment and requirements, RoCE Express can be an alternative to network adapters that are attached through the IBM Z® channel subsystem.

Why use RoCE Express
With RoCE Express, you are in line with networking in the distributed world and set to benefit from developments in that area.
Physical functions, virtual functions, and ports
For RoCE Express2 and later, each physical adapter port maps to one physical function (PF).
Modes of operation
RoCE Express PCI functions have modes for two connection types: IP-based connections and RDMA-based connections.
z/OS connectivity
z/OS® requires an OSA-Express adapter to connect to an external LAN.
RoCE Express capabilities
PCI functions of RoCE Express support most of the typical network interface capabilities.
RoCE Express limitations
At the time of writing, RoCE Express does not offer all capabilities of OSA-Express.
Management and configuration tools
Use the smc-tools package, distribution tools, and generic PCI management commands to manage and configure RoCE Express PCI functions.

Parent topic: Introduction to RoCE Express