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Chapter 6. Monitoring the device
This topic provides the following information:
• “Interpreting port-side LEDs” on page 53
• “Interpreting nonport-side LEDs” on page 57
• “Interpreting the POST results” on page 58
• “Interpreting the BOOT results” on page 58
• “Running diagnostic tests” on page 59
Interpreting port-side LEDs
System activity and status can be determined through the activity of the LEDs on the switch.
48 bicolor (green/amber) port status LEDs, one for each SFP+ port. 4 tri-color LEDs, one for each QSFP
port on the switch. The QSFP LED will flash 1 to 4 times to indicate whether the focus is on port 0 (1
flash), port 1 (2 flashes), port 2 (3 flashes), or port 3 (4 flashes).
There are three possible LED states: no light, a steady light, and a flashing light. Flashing lights may be
slow, fast, or flickering. The lights are green or amber. Sometimes, the LEDs may flash either of the colors
during boot, POST, or other diagnostic tests. This is normal; it does not indicate a problem unless the
LEDs do not indicate a healthy state after all boot processes and diagnostic tests are complete.
Figure 30. SAN64B-6 Port-Side LEDs
©
Copyright IBM Corp. 2016, 2020
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