The InfiniBand technology (IB) development community, e.g. Mellanox, Voltaire, Topspin, InfiniCon, etc. are deploying their next generation NICs and switches [1, 2, 3, 4, 5]. The NICs are based on the PCI Express bus and the switches employ a 24 port switch chip developed by Mellanox. This new switch chip has led to the development of high port count (e.g. 144 and 288 ports) standalone switches...