Oracle offers Fabric Interconnects with InfiniBand Fabric Boards:
The Fabric Interconnect F1-15 with a QDR Fabric Board
This option contains 20 InfiniBand ports that connect to client servers. Each port is a quad data rate (QDR) link to the server and operates at 40 Gbps, but is capable of auto negotiating down to 20 Gbps for Double Data Rate (DDR), or 10 Gbps Single Data Rate (SDR) depending on the speed of your network. Ports are numbered left to right starting at the bottom left-hand corner. Ports 1 and 11 are single ports, but all other ports are grouped together into three individual clusters with six ports in each.
the Fabric Interconnect F1-4 with a QDR Fabric Board
This option contains 20 InfiniBand ports that connect to client servers. Each port is a quad data rate (QDR) link to the server and operates at 40 Gbps, but is capable of auto negotiating down to 20 Gbps for Double Data Rate (DDR), or 10 Gbps Single Data Rate (SDR) depending on the speed of your network. Ports are numbered left to right starting at the bottom left-hand corner. Ports 1 and 11 are single ports, but all other ports are grouped together into three individual clusters with six ports in each.
Use InfiniBand cables to connect the client servers to the Fabric Interconnect. Attach a cable from each server's InfiniBand interface (or optional HCA card) to one of the 24 server port on the Fabric Board. Additional cables may be ordered from Oracle.
InfiniBand Ports for Fabric Interconnect F1-15 Client Server Connections shows an InfiniBand port connection to a Fabric Interconnect F1-15 with a DDR Fabric Board.
Figure 49 InfiniBand Ports for Fabric Interconnect F1-15 Client Server Connections
InfiniBand Ports for Fabric Interconnect F1-4 Client Server Connections shows an InfiniBand port connection on the Fabric Interconnect F1-4 with a DDR Fabric Board.
Figure 50 InfiniBand Ports for Fabric Interconnect F1-4 Client Server Connections