Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2
Fixed In:
12.0.0, 11.6.1 HF2, 11.5.4
Opened: May 15, 2015 Severity: 3-Major
On BIG-IP appliances with the Backplane Micro-Controller Hybrid (LBH) type of Always-On-Management device, Power Supply status reporting and enumeration may function incorrectly if the LBH resets due to a watchdog reboot or other cause.
Resets of the LBH device occur very rarely. When this issue occurs, the status reporting and enumeration of appliance power supplies may be inaccurate. Errors may be reported when attempting to obtain sensor values from non-present power supplies. Power supply presence, status and identification may be reported incorrectly following power supply removal or reinsertion.
This may occur on BIG-IP 2000-/4000-series, BIG-IP 5000-/7000-series, and BIG-IP 10000-/12000-series platforms.
To work around this issue and restore correct reporting of power supply status, you can restart the chmand process. To do so, perform the following procedure: Impact of workaround: Restarting the chmand process also restarts core BIG-IP system daemons such as TMM. Running this procedure interrupts traffic processing. 1.Log in to the BIG-IP command line. 2.To restart the chmand process, type the following command: bigstart restart chmand.
Power Supply status is now reported correctly after LBH reset.