Installation
Rev 1.7
Mellanox Technologies
30
5. Check that the leaf physical and data link status LEDs in the spines are lit.
3.2.6 InfiniBand QSFP Cable Installation
The switch uses industry standard QSFP InfiniBand cables which are available from several ven-
dors. The standard QSFP cables support full 40+40Gb/s (QDR), 20+20Gb/s (DDR) and 10+10Gb/
s (SDR) bidirectional wire speed of the switch ports. All InfiniBand QSFP connections are made
to the leaf boards. Each leaf has 18 InfiniBand QSFP connectors which are numbered 1-18 from
left to right.
Note: If maximum cable lengths are exceeded data transfer will be reduced and Berr will
increase.
All cables can be inserted or removed with the unit powered on. To insert a cable, press the con-
nector onto the port receptacle until the connector is firmly seated. The green LED indicator above
the port will light when the physical connection is established (when both ends of the cable are
properly connected to working devices). To remove, disengage the lock and slowly pull the con-
nector away from the port receptacle. For a valid physical connection both ends of the cable must
be connected to working devices.
Warning
: Take care to not impede the air exhaust flow through the ven-
tilation 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.
Green – indicates Power OK
ATTN – Yellow indicates fault in
spine, normally off
Green – indicates that there is
a physical connection to the
spines through this link
Yellow – indicates that there is a
logical connection to the spines
through this link
Links A and B to each leaf
Leaf numbers
