Figure A-10 illustrates how two Exalogic full racks are connected on the same InfiniBand fabric.
In Figure A-10, NM2-GW represents a Sun Network QDR InfiniBand Gateway Switch (leaf switches). NM2-36P represents a Sun Datacenter InfiniBand Switch 36 (spine switch).
This scenario is explained in detail in Connecting Two Exalogic Machine Full Racks Together. It is included in this appendix for the sake of completeness.