5900 JC772A "airflow direction is not preferred"

[drolfe]

HI, I'm seeing the below errors on a IRF stack of 5900AF switches

Any ideas ?

The switch is rack ports front power supply rear.

The DC advise that the power supplys suck are in (wrong direction) but the fans blow out the back

[Master01]dis log | inc Oct
%Oct 20 03:40:37:565 2014 Master01 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=192.168.3.10-User=admin; Command is display ntp-service status
%Oct 20 03:40:55:142 2014 Master01 DEV/1/FAN_DIRECTION_NOT_PREFERRED: -Slot=2; Fan 1 airflow direction is not preferred on slot 2, please check it.
%Oct 20 03:40:55:144 2014 Master01 DEV/1/FAN_DIRECTION_NOT_PREFERRED: -Slot=2; Fan 2 airflow direction is not preferred on slot 2, please check it.
%Oct 20 03:40:58:357 2014 Master01 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=192.168.3.10-User=admin; Command is dis log
%Oct 20 03:41:16:853 2014 Master01 DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 1 airflow direction is not preferred on slot 1, please check it.
%Oct 20 03:41:16:853 2014 Master01 DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 2 airflow direction is not preferred on slot 1, please check it.



[Master01]dis device manuinfo
 Slot 1
DEVICE_NAME          : 5900AF-48XG-4QSFP+ JC772A
DEVICE_SERIAL_NUMBER : XXXXXXXXX
MAC_ADDRESS          : 4431-922B-88B3
MANUFACTURING_DATE   : 2013-11-20
VENDOR_NAME          : HP
Fan 1
DEVICE_NAME          : HP A58x0AF frt(ports)-bck(pwr) Fan Tray JC683A
DEVICE_SERIAL_NUMBER : CN47FDF1WG
MANUFACTURING_DATE   : 2014-07-19
VENDOR_NAME          : HP
Fan 2
DEVICE_NAME          : HP A58x0AF frt(ports)-bck(pwr) Fan Tray JC683A
DEVICE_SERIAL_NUMBER : CN47FDF1T6
MANUFACTURING_DATE   : 2014-07-19
VENDOR_NAME          : HP
Power 1
DEVICE_NAME          : NONE
MANU SERIAL NUMBER   : CN23F640T3
MANUFACTURING_DATE   : NONE
VENDOR_NAME          : NONE
 Slot 2
DEVICE_NAME          : 5900AF-48XG-4QSFP+ JC772A
DEVICE_SERIAL_NUMBER : XXXXXXXXX
MAC_ADDRESS          : 4431-922C-939D
MANUFACTURING_DATE   : 2013-11-18
VENDOR_NAME          : HP
Fan 1
DEVICE_NAME          : HP A58x0AF frt(ports)-bck(pwr) Fan Tray JC683A
DEVICE_SERIAL_NUMBER : CN47FDF1V7
MANUFACTURING_DATE   : 2014-07-19
VENDOR_NAME          : HP
Fan 2
DEVICE_NAME          : HP A58x0AF frt(ports)-bck(pwr) Fan Tray JC683A
DEVICE_SERIAL_NUMBER : CN47FDF16C
MANUFACTURING_DATE   : 2014-07-12
VENDOR_NAME          : HP
Power 1
DEVICE_NAME          : NONE
MANU SERIAL NUMBER   : CN1AF640DG
MANUFACTURING_DATE   : NONE
VENDOR_NAME          : NONE



[Master01]dis environment
 Slot 1
System temperature information (degree centigrade):
-------------------------------------------------------------------------------
Sensor    Temperature  LowerLimit  WarningLimit  AlarmLimit ShutdownLimit
hotspot 1      40           0            50          55           NA
hotspot 2      38           0            58          63           NA
 Slot 2
System temperature information (degree centigrade):
-------------------------------------------------------------------------------
Sensor    Temperature  LowerLimit  WarningLimit  AlarmLimit ShutdownLimit
hotspot 1      41           0            50          55           NA
hotspot 2      40           0            58          63           NA



[Master01]dis fan
 Slot 1
      FAN    1
      State    : FanDirectionFault
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Power-to-Port
      FAN    2
      State    : FanDirectionFault
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Power-to-Port
 Slot 2
      FAN    1
      State    : FanDirectionFault
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Power-to-Port
      FAN    2
      State    : FanDirectionFault
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Power-to-Port
[Master01]

[drolfe · Accepted solution]

OK Called HP about this one as didn't want my switches to overheat.

Turned out to just be a prefered setting

[Master01]fan prefer-direction slot 1 port-to-power
[Master01]fan prefer-direction slot 2 port-to-power
[Master01]
[Master01]
[Master01]dis log | inc recovered
%Oct 20 06:00:45:653 2014 Master01 DEV/5/FAN_RECOVERED: Fan 1 recovered.
%Oct 20 06:00:45:655 2014 Master01 DEV/5/FAN_RECOVERED: Fan 2 recovered.
%Oct 20 06:01:00:791 2014 Master01 DEV/5/FAN_RECOVERED: -Slot=2; Fan 1 recovered.
%Oct 20 06:01:00:793 2014 Master01 DEV/5/FAN_RECOVERED: -Slot=2; Fan 2 recovered.
[Master01]
[Master01]
[Master01]dis fan
 Slot 1
      FAN    1
      State    : Normal
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Port-to-Power
      FAN    2
      State    : Normal
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Port-to-Power
 Slot 2
      FAN    1
      State    : Normal
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Port-to-Power
      FAN    2
      State    : Normal
      Wind Direction    :Port-to-Power
      Prefer Wind Direction    :Port-to-Power
[Master01]
[Master01]
[Master01]

[svenu]

Hi

  I  see a weird issue with Slot2 fans.  I set to preferred direction 'Power-to-Port' for slot2 but I see that change happened only to FAN2 but not to FAN1 ?

Any ideas please ?

[R9N7451S1FTC]dis fan
Slot 1
FAN 1
State : Normal
Wind Direction :Power-to-Port
Prefer Wind Direction :Power-to-Port
FAN 2
State : Normal
Wind Direction :Power-to-Port
Prefer Wind Direction :Power-to-Port

Slot 2
FAN 1
State : FanDirectionFault   <---------------------------
Wind Direction :Power-to-Port
Prefer Wind Direction :Port-to-Power

FAN 2
State : Normal
Wind Direction :Port-to-Power
Prefer Wind Direction :Port-to-Power

[Apachez-]

Slot 2
FAN 1
State : FanDirectionFault   <---------------------------
Wind Direction :Power-to-Port
Prefer Wind Direction :Port-to-Power

As you can see you have configured Port-to-Power as preferred direciton while the device you have in Slot2 FAN 1 is a Power-to-Port one.

So get the proper PSU (or if this is in a fanbox) and you should resolve that warning.

[Richard Litchfield]

It looks like Fan 1 and Fan 2 are two different variants (Front-back, BF). That will be a problem and needs to be rectified - they must both be the same time in the switch.

[kperez]

Good day.  I amhaving this issue and i was wondering if intering the command below requires a system reboots ?

Thank you

Fan prefer-direction slow 1 port-to-power

[bamaskas]

[FF30M2]fan prefer-direction s 1 ?
port-to-power From port to power
power-to-port From power to port

[FF30M2]fan prefer-direction s 1 port-to-power
[FF30M2]save

[FF30M2]display fan
Slot 1:
Fan 1:
State : Normal
Airflow Direction: Port-to-power
Prefer Airflow Direction: Port-to-power
Fan 2:
State : Normal
Airflow Direction: Port-to-power
Prefer Airflow Direction: Port-to-power

The configuration is dynamic in that it will be effective immediately and the fan status will within a minute reflectthe change.