Bug ID 1812541: DDM system alarms triggered when interface is disabled

Last Modified: Oct 19, 2025

Affected Product(s):
F5OS F5OS(all modules)

Known Affected Versions:
F5OS-A 1.8.0, F5OS-C 1.8.0, F5OS-C 1.8.1

Fixed In:
F5OS-C 1.8.2, F5OS-A 1.8.3

Opened: Feb 05, 2025

Severity: 3-Major

Related Article: K000150155

Symptoms

Running 'show system alarms' reports "Portgroup <N> ERROR Lanes: 1 Transmitter power low alarm"

Impact

Transmitter power low and transmitter bias low alarms occur.

Conditions

Disabling an interface locally

Workaround

To clear the alarms, workaround provided in article K000150155 can be followed.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips