Display Power Supply Status - Dell C9000 Series Networking Configuration Manual

Display Power Supply Status

To monitor the operational status of a power supply, use the show environment pem command.
Use the command output to verify the operation of installed power supplies. The current operational status
(up or down), power supply type, fan status and speed, and power usage are displayed. A switch power supply
is sometimes referred to as a power entry module (PEM).
Dell#show environment pem
-- Power Supplies
Unit Bay Status
-----------------------------------------------------------------------------
0 0 down
0 1 up
0 2 down
0 3 up
When an under-voltage condition occurs on a power supply (for example, a power cable is removed):
• A Syslog message is displayed to inform you that the power supply is down. The power supply number
(for example, power supply 0) indicates the chassis bay in which it is installed; chassis bays are
numbered 0 to 4, starting from the leftmost bay 0. unit 0 refers to the switch itself.
Dell#00:20:34: %SYSTEM:CP %CHMGR-0-PS_DOWN: Major alarm: Power supply 0 in
unit 0 is down
Dell#00:20:53: %SYSTEM:CP %CHMGR-0-PS_DOWN: Major alarm: Power supply 2 in
unit 0 is down
• Use the show alarms command to display power-supply alarm messages.
Dell#show alarms
...
-- Major Alarms
Alarm Type
---------------------------------------------------------------------------
PEM 0 in unit 0 down
PEM 2 in unit 0 down
• Use the show environment pem command to display complete information on power supply
operation.
Dell#show environment pem
-- Power Supplies
Unit Bay Status
-----------------------------------------------------------------------------
0 0 down
0 1 up
0 2 down
0 3 up
Total power:
--
Type FanStatus
AC up
AC up
AC up
AC up
--
--
Type
AC
AC
AC
AC
1309.0 W
FanSpeed(rpm)
1376
18848
1312
18880
Duration
25 sec
6 sec
FanStatus FanSpeed(rpm)
up 1376
up 18848
up 1312
up 18880
Power Usage (W)
0.0
666.0
0.0
643.0
Power Usage (W)
0.0
666.0
0.0
643.0
Debugging and Diagnostics 376