Bug ID 451549: Fan tray serial number is not updated after removal/replacement

Last Modified: Jul 18, 2026

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

Known Affected Versions:
11.5.1, 11.5.1 hf1, 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, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Mar 07, 2014

Severity: 3-Major

Symptoms

If a fan tray is removed and replaced with another within a 30 second interval, the serial number of the new fan tray is not reflected in the hardware information.

Impact

Any chassis where the fan tray is changed.

Conditions

Chassis with a fan tray running any supported version of the software.

Workaround

Wait more than 30 seconds between removing the fan tray and replacing it with a new one.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips