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Mellanox Technologies
Power Supply Unit Status Rear LED Assignments
LED Behavior
Description
Action Required
Solid Green
The PSU is running normally.
N/A
Flashing Green 1Hz
AC present / Only 12VSB on (PSU off) or PSU in
Smart-on state.
Call your Mellanox representative for
assistance.
Amber
AC cord unplugged or AC power lost while the
second power supply still has AC input power.
Plug in the AC cord of the faulty PSU.
PS failure (including voltage out of range and
power cord disconnected).
Check voltage. If OK, call your Mellanox
representative for assistance.
Flashing Amber
Power supply warning events where the power
supply continues to operate; high temp, high
power, high current, slow fan.
Call your Mellanox representative for
assistance.
Off
No AC power to all power supplies.
Call your Mellanox representative for
assistance.
4.8.4 Unit Identification LED
The UID LED is a debug feature, that the user can use to find a particular system within a cluster by turning on the UID blue LED.
To activate the UID LED on a switch system, run:
switch
(config) # led MGMT uid on
To verify the LED status, run:
switch
(config) # show leds
Module LED Status
--------------------------------------------------------------------------
MGMT UID Blues
To deactivate the UID LED on a switch system, run:
switch
(config) # led MGMT uid off
4.8.5 Bad Port LED
The Bad Port LED indicator is used to indicate symbol errors in one or more system ports.
The table above (Power Supply Unit Status Rear LED Assignments) does not apply to the SN2100/SN2010 systems.
