4-4
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
Diagnosing with the LEDs
Table 4-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
1. Check in the table for the LED pattern you see on your switch.
2. Refer to the corresponding diagnostic tip on the next few pages.
Table 4-1. LED Error Indicators
LED Pattern Indicating Problems
Diagnostic
Tips
Power Fault RPS EPS Self Test
Fan
Status
Port LED
(in Link view mode)
Off with
power cord
plugged in
111 11 1
➊
On Prolonged On
11
Prolonged On
11
➋
On Blinking
2
11
Blinking
2
11
➌
On Blinking
2
11
Off Blinking
2
1
➍
On Blinking
2
11
Blinking
2
1
Blinking
2
➎
On Off
11
Off
1
Off with cable
connected
➏
On Off
11
Off
1
On, but the port is not
communicating
➐
On Blinking Blinking Blinking
11
➑
1
This LED is not important for the diagnosis.
2
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
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