IBM 24R9718 IB External InfiniBand Ports, Server Switch Module Status LEDs, Port Status LEDs

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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.

Server Switch Module Status LEDs

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

Table 1-1lists and describes the states of the Module Status LEDs.

Table 1-1:Module Status LED Indications

State	Indication
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.

Port Status LEDs

The port LEDs on the Server Switch Module indicate connection and transmission status (Table 1-2).

Link LEDs indicate connection status (Table 1-3). Traffic LEDs indicate transmission status.

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

Status	Indication
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
Status	Indication
off	No traffic runs over the interface.
blinking green	Traffic runs successfully over the interface.

External InfiniBand Ports

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.