C9300 Power supply not present bug

[king123u]

HI, guys

Is there any bug reported on the cisco 9300 switch that doesn't recognize the power module and it works?

C9300L-24T-4G version 17.8.0.1

'sh environment all' Results

Sensor List: Environmental Monitoring
Sensor Location State Reading Range(min-max)
PS1 Vout 1 NOT PRESENT 0 mV na
PS1 Vin 1 NOT PRESENT 0 mV 90 - 264
PS1 CURin 1 NOT PRESENT 0 mA na
PS1 Curout 1 NOT PRESENT 0 mA na
PS1 POWin 1 NOT PRESENT 0 mW na
PS1 POWout 1 NOT PRESENT 0 mW na
PS1 FAN 1 NOT PRESENT 0 rpm na
PS2 Vout 1 NOT PRESENT 0 mV na
PS2 Vin 1 NOT PRESENT 0 mV 90 - 264
PS2 CURin 1 NOT PRESENT 0 mA na
PS2 CURout 1 NOT PRESENT 0 mA na
PS2 POWin 1 NOT PRESENT 0 mW na
PS2 POWout 1 NOT PRESENT 0 mW na
PS2 FAN 1 NOT PRESENT 0 rpm na
SYSTEM INLET 1 GREEN 36 Celsius 0 - 56
SYSTEM OUTLET 1 GREEN 42 Celsius 0 - 125
SYSTEM HOTSPOT 1 GREEN 56 Celsius 0 - 125

Switch FAN Speed State Airflow direction
---------------------------------------------
1 1 5458 OK Front to Back
1 2 5458 OK Front to Back
1 3 5458 OK Front to Back

SW PID Serial# Status Sys Pwr PoE Pwr Watts
-- ------------- ---------- ------------ ------- ------- -----
1A Not Present
1B Not Present

Switch power on well and works well

[marce1000 · Accepted solution]

  - Verify the LED statuses on the power supplies
  - Toggle power on/off using instructions from https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/17-12/configuration_guide/int_hw/b_1712_int_and_hw_9300_cg/configuring_internal_power_supplies.html#configuration_examples_for_internal_power_supplies
    of course only , if you have a redundant setup ==> Check  the logs on the switch afterwards ==> See if that makes a difference for  'show env all'

    + Have a look at https://www.cisco.com/c/en/us/support/docs/switches/nexus-9000-series-switches/220196-troubleshoot-power-supplies-on-catalyst.html

  M.

[marce1000]

  - Also verify the issue against the latest advisory software version :
                      https://software.cisco.com/download/home/286322051/type/282046477/release/Dublin-17.12.5

  M.

[Leo Laohoo]

There is really no excuse not to upgrade the firmware of the switch.  The software, for example, is free to download.  If that is not even a good motivation to upgrade the firmware of the switch then no one, I mean NOBODY, should be complaining about what abnormal and unusual behaviour the switch is doing.

[pieterh]

apart from the advice to upgrade, to answer your original question: YES there are bugs regarding the power supply.

in my personal experience only that a single PSU was reported as not present, (not both at the same time)
but the switch kept running (!) with the PSU "not present" in place and the other PSU removed
reseating the PSU (remove-wait30sec-replace) did sometimes solve the issue, same for rebooting the switch
but in some occurences the "not present" kept reappearing after a while
and only disappeared for good after the firmware was upgraded
so upgrading the firmware is still the best way to go.