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324 Port InfiniBand FDR Switch Platform Hardware Installation Guide
5
InfiniBand QSFP Cable Installation
The switch uses industry standard QSFP InfiniBand cables which are available from Mel-
lanox Technologies. The standard QSFP cables support full 56+56Gb/s (FDR),
40+40Gb/s (FDR10), 40+40Gb/s (QDR), 20+20Gb/s (DDR) and 10+10Gb/s (SDR) bidi-
rectional wire speed of the switch ports. All InfiniBand QSFP connections are made to the
leaf boards. Each leaf has 18 InfiniBand QSFP connectors in two rows, which are num-
bered 1-18.
All cables can be inserted or removed with the unit powered on. To insert a cable, press the
connector onto the port receptacle until the connector is firmly seated. The LED indicator,
corresponding to each data port, will light orange when the physical connection is estab-
lished (that is, when the unit is powered on and a cable is plugged into the port with the
other end of the connector plugged into a functioning port). When a logical connection is
made the LED will change to green. When data is being transferred the light will blink
green. To remove, disengage the lock and slowly pull the connector away from the port
receptacle.
5.1
Port Connector Interfaces
The connector side of the switch has 18 leaf boards and each leaf board has 18 QSFP
ports. The ports on each leaf board are placed in two rows, 9 ports to a row. The ports are
labelled as shown in Figure 33. The bottom row ports are flipped from the top row. See
Figure 34.
Mellanox Technologies
If maximum cable lengths are exceeded data transfer will be reduced and the bit error
rate will increase.
FDR BandWidth is supported only by MLNX QSFP cables.
FDR and FDR10 are only guaranteed to work with approved Mellanox Cables.
Warning: Take care to not impede the air flow through the ventilation holes next to the
InfiniBand ports. Use cable lengths which allow routing horizontally around to the side
of the chassis before bending upward or downward in the rack.
Rev 1.0
37
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