IB is a network architecture for the large-scale interconnection of computing and I/O nodes through a high-speed switched fabric. To operate IB on an Oracle server, you need an IB HCA (the adapter) and an IB software stack.
IB software is bundled with the Oracle Solaris OS. For Oracle Solaris 11.3, the package containing the device driver for the adapter is driver/infiniband/sif.
If you don't have the package on the system or your system is running an older release of Oracle Solaris, you must use the pkg install/update utility to add or update the package prior to using the adapter.
For details about IB software supported in Oracle Solaris OS releases, refer to these documents in the Oracle Solaris OS Release and Installation Collection at http://www.oracle.com/goto/Solaris11/docs:
Oracle Solaris 11 What's New
Oracle Solaris 11 Release Notes
Oracle Solaris 11 Package List
The IB software stack, consisting of the upper-layer protocols and transport framework, is included in all of the Oracle Solaris software groups described in the Oracle Solaris Installation Guide.
For details about IB so ftware stack configurations in an Oracle Solaris OS update release, refer to the System Administration Guide: Devices and File Systems document in the Solaris 11 System Administrator Collection at http://www.oracle.com/goto/Solaris11/docs.