Mellanox Technologies MSX1012B-2BFS User Manual download pdf (Page 44)

CablingRev 1.0

Mellanox Technologies

4Cabling

4.1 Cable Installation

All cables can be inserted or removed with the unit powered on. To insert a cable, press the con-

nector into the port receptacle until the connector is firmly seated. The LED indicator, corre-

sponding to each data port, will light when the physical connection is established (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). After plugging in a cable, lock the connector using the latching

mechanism particular to the cable vendor. When a logical connection is made the LED will

change to green for IB and orange for Eth. When data is being transferred the light will blink

green.

Figure 28: Top and Bottom QSFP Cable Orientation

To remove, disengage the locks and slowly pull the connector away from the port receptacle. The

LED indicator for that port will turn off when the cable is unseated.

Care should be taken not to impede the air flow through the ventilation holes next to the connec-

tor ports. Cable lengths should be used which allow for routing horizontally around to the side of

the switch before bending upward or downward in the rack.

4.2 Splitting the Data Stream Using Breakout (Fanout) Cables

All 12 ports can be split from 1 X QSFP to 4 X SFP+ by using a QSFP 1X4 breakout cable to

split one 40 GbE port into 4 lanes (4 SFP+ connectors 10 GbE each). All ports can also split into

2 10 GbE ports, using lanes 1 and 2 only. When a QSFP port is split into 2 10 GbE ports then

only SFP+ connectors #1 and #2 are used. Connectors #3 and #4 are left unconnected.

For a list of approved cables for these switches see

http://www.mellanox.com/related-docs/user_manuals/

Mellanox_approved_cables.pdf

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Mellanox Technologies MSX1012B-2BFS User Manual Page 44