> * scale up to 48k nodes > * 16 ports which gets to about 1,000,000 ports. > (16 ports per device is average for 32 ports for switch and 1 for > HCA) This math seems off -- even with ~48K HCAs and a 3-tier fabric, you only end up with 6 * 48K ports, which is less than 300K. Why would anyone sensible build a fabric with 1M ports?