Use this procedure to connect multiple SuperCluster M8 or SuperCluster M7 racks together.
If spine switches shipped separately, install them in U1 of each rack. For installation instructions, refer to the IB switch document titled, Sun Datacenter InfiniBand Switch 36 HTML Collection for Firmware Version 2.1 at http://docs.oracle.com/cd/E36265_01
Remove the seven existing inter-switch connections between each leaf switch, and the two connections between the leaf switches and the spine switch as shown in this diagram.
The disconnected ports are used to make connections to the IB switches in the additional SuperCluster racks.
Use one of these cable reference sections for connection details: