The Oracle F2 Long Range InfiniBand Module (IB LR module) is an I/O module supported in the Oracle Fabric Interconnect F2-12. In documentation, the Oracle Fabric Interconnect F2-12 is referred to as the virtualization switch. The module is designed to support communication of InfiniBand traffic farther than the IBTA default distances. For more information about the IB LR module, see the Oracle F2 Long Range InfiniBand Module User’s Guide.
The IB LR Module supports a software feature called switch mode, which enables two virtualization switches on the same IB subnet to communicate over IB LR links at distances of up to a few hundred meters. This implementation enables connectivity for nearby, or adjacent, datacenters on the same campus for such uses as live mirroring or building-level disaster recovery within a campus.