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Troubleshooting
Diagnosing with the LEDs
Power
Fault
off with power
*
cord plugged in
prolonged
on
on
blink
on
orange
blink
on
orange
blink
on
orange
on
off
on
off
blink
on
orange
blink
on
orange
blink
on
orange
blink
on
orange
* This LED is not important for the diagnosis.
†
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
** The Mdl LED is on the switch front. It is replicated by the Mdl Status LED on the 10G Expansion Modules.
Note that this LED is also used to report the status of a Stacking Module installed in the switch. See
5-4
Diagnosing with the LEDs
■
Table 5-1 shows LED patterns on the switch that indicate switch problem
conditions.
■
Table 5-2 shows LED patterns on the switches and on stacking modules
in a stack that indicate stack-related problem conditions.
1.
Check in the tables for the LED pattern you see on your switch and
stacking module.
2.
Refer to the corresponding diagnostic tip on the next few pages.
Table 5-1.
Switch LED Error Indicators
LED Pattern Indicating Problems
Tmp
Test
*
*
prolonged
*
on
blink
*
†
†
orange
*
off
†
blink
*
†
†
orange
*
off
*
off
*
*
†
blink
*
†
†
orange
*
*
†
*
*
†
PoE
Fan
PS
*
*
*
*
*
*
*
*
*
blink
*
*
†
orange
*
*
*
*
*
*
*
*
*
blink
*
*
orange
*
*
*
blink
*
*
†
orange
*
*
*
Port
Mdl **
Link LED
*
*
*
*
*
*
*
*
†
*
blink orange
off with
*
cable
connected
on, but no
*
activity on
the port
*
*
†
*
*
*
blink
*
†
orange
Table
See
Diag Tips
1
2
3
4
5
6
7
8
9
10
11
5-2.
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Table of Contents
Troubleshooting
