Bug ID 478986: Powered down DC PSU is treated as not-present

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP All(all modules)

Known Affected Versions:
11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:

Opened: Sep 11, 2014

Severity: 4-Minor


When power is removed from the PSU but the PSU remains in the system, 'tmsh show sys hardware' reports the PSU as 'not-present'.


Only the message is incorrect. Although the PSU is present, the system cannot read its data without power, so the system marks the PSU 'not present'. Once power is restored, all information is available.


This occurs when an installed DC powered PSU loses power, and the user runs the command 'tmsh show sys hardware'.


Plug the power cable into the PSU. The system can now detect the power supply status and read the PSU info.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips