54
IB Switch Card LEDs
Each InfiniBand switch card includes two LEDs (one green and one yellow) at one side of the
interface-end of the card. Figure5-4 displays the IB switch card LEDs.
Figure 5-4: InfiniBand Switch Card LEDs
Table 5 -7 explains IB switch card LED indications.

IB Port LEDs

Two port LEDs (both green) appear next to each IB port on the switch card. Figure5-5 displays the
InfiniBand interface LEDs.
Figure 5-5: The InfiniBand interface LEDs
Both the top and bottom InfiniBand port LEDs are solid green. The top LED indicates a logical link has
taken place. (A logical link is established when the subnet manager makes a sweep. A logical link must
be established if you are to use the port.) The bottom LED indicates a physical link has occurred. (A
physical link requires that the drivers on the attached InfiniBand host have been installed and are
running).
Table 5 -8 explains IB port LED indications.
Table 5-7: InfiniBand Switch Card LED Indications
LED State Indication
green off, yellow off No power to the switch card.
green solid, yellow off Switch card runs with no errors.
yellow solid, green off Switch card problem that requires user intervention.
Table 5-8: Management Ethernet LED Indications
LED State Indication
bottom LED off No Rx-Character detected.
bottom LED on Valid Rx-Character detected.
bottom LED on, top LED on Link is OK.
bottom LED on, top LED on Logical link error.
logical link status
physical link status