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Troubleshooting
Diagnosing with the LEDs
Diagnosing with the LEDs
Table 3-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
1.
2.
Table 4-1.
* This LED is not important for the diagnosis.
†
4-4
Check in the table for the LED pattern you see on your switch.
Refer to the corresponding diagnostic tip on the next few pages.
LED Error Indicators
LED Pattern Indicating Problems
Power
Fault
On with
Flashing
power cord
plugged in
On
Prolonged On Prolonged On
†
On
Flashing
†
On
Flashing
†
On
Flashing
On
Off
On
Off
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.
Fan
Self Test
Status
(in Link view mode)
*
*
*
†
Flashing
*
†
Off
Flashing
†
Flashing
*
Off
*
Off
*
On, but the port is not
communicating
Port LED
Diagnostic
Tips
➊
*
➋
*
➌
*
➍
*
†
➎
Flashing
➏
Off with cable
connected
➐
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