Diagnosing with the leds, Led patterns for general switch troubleshooting, Diagnosing with the leds -4 – HP 2520G-POE User Manual
Page 56: Led patterns for general switch troubleshooting -4, Diagnosing with the, Leds
4-4
Troubleshooting
Diagnosing with the LEDs
Diagnosing with the LEDs
Table 4-1 shows LED patterns on the switch that indicate problem conditions
for general switch operation troubleshooting.
Table 4-2 shows LED patterns that indicate problem conditions for PoE
troubleshooting.
LED patterns for General Switch Troubleshooting
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
Test
Fan
Port Link LED
Off with
power cord
plugged in
1
1
1
1
On
Prolonged On
Prolonged On
1
1
On
Flashing
2
Flashing
2
1
1
On
Flashing
2
Off
Flashing
2
1
On
Flashing
2
Flashing
2
1
Flashing
2
On
Off
Off
1
Off with cable
connected
On
Off
Off
1
On, but the port is not
communicating
1
This LED is not important for the diagnosis.
2
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.