Bug ID 622877: i2000 and i4000 series appliances may show intermittent DDM alarms/warnings at powerup that clear right away

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2

Opened: Oct 15, 2016
Severity: 3-Major

Symptoms

Messages like the following in /var/log/ltm: Oct 14 12:22:26 localhost err pfmand[5637]: 01660011:3: DDM interface: 6.0 transmit power too low alarm. Transmit power:0.0515 mWatts Oct 14 12:22:26 localhost err pfmand[5637]: 01660011:3: DDM interface:6.0 receive power too low alarm. Received power:0.0000 mWatts Oct 14 12:23:29 localhost err pfmand[5637]: 01660013:3: DDM interface:6.0 transmit power too low alarm cleared Oct 14 12:23:29 localhost err pfmand[5637]: 01660013:3: DDM interface:6.0 receive power too low alarm cleared '

Impact

No functional impact, these are not valid DDM alarms or warnings.

Conditions

i2000 or i4000 series appliances with DDM enabled and a reboot or restart of the pfmand daemon

Workaround

Ignore DDM errors that clear right away after powerup or pfmand restart.

Fix Information

During DDM initialization clear any alarms or warnings cached in the hardware registers.

Behavior Change