Bug ID 581811: The blade alarm LED may not reflect the warning that non F5 optics is used.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.0, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Fixed In:

Opened: Mar 18, 2016

Severity: 3-Major


When non F5 optics is used for front switch ports, the LCD and /var/log/ltm will display some warning message. But the alarm LED may not reflect that.


The alarm LED may not reflect the warning.


This is caused by a race condition. When a blade comes up and decides its role as a primary blade or a secondary blade, it will clear the alarm LED. So the last blade coming up may have its alarm LED in the right state, but the blades that came up earlier may have their alarm LEDs cleared.



Fix Information

The problem is fixed in TMOS v12.1.1.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips