IBM 24R9718 IB Manuel D’Utilisation

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NOTE: As of this release, the Server Switch Module does not support the 12x-port physical link and 
logical link LEDs.

Module Status LEDs provide an at-a-glance indication of the health of the Server Switch Module. 

 lists and describes the states of the Module Status LEDs.

The port LEDs on the Server Switch Module indicate connection and transmission status (

). 

Link LEDs indicate connection status (

). Traffic LEDs indicate transmission status.

To support three 4x ports, the 12x InfiniBand connector on the Server Switch Module becomes three 4x 
connectors through an “octopus cable.” This cable begins as one 12x connector (which connects to your 
Server Switch Module), then branches into three 4x connectors to which you can attach additional 
InfiniBand hardware. The physical connectors are numbered 1 through 4 from top to bottom (where the 
independent 4x connector on the Server Switch Module is at the top).

In all user interfaces, however, the port numbers begin at 15. Ports 1 through 14 function internally, 
then ports 15 - 18 connect the Server Switch Module to external devices. Connector 1 maps to port 15, 
connector 2 to port 16, and so on.

Table 1-1: Module Status LED Indications

both LEDs off

No system power or LED malfunction.

yellow solid, green off Module error detected: operator intervention required.

green solid, yellow off Module running with no errors detected.

Table 1-2: Server Switch Module Port Physical Link Status LEDs

off

No logical connection through the interface.

solid green

Indicates that a physical link is established, with drivers installed and running.

Table 1-3: Server Switch Module Port Logical Link Status LEDs

off

No traffic runs over the interface.

blinking green

Traffic runs successfully over the interface.