MIB: ZYXEL-IESCOMMON-MIB
This variable indicates the alarm status of the module.
It is a bit map represented a sum, therefore, it can represent
multiple defects simultaneously. The moduleNoDefect should be set
if and only if no other flag is set.
The various bit positions are:
1   moduleNoDefect
2   moduleOverHeat
3   moduleFanRpmLow
4   moduleVoltageLow
5   moduleThermalSensorFailure
6   modulePullOut
7   powerDC48VAFailure
8   powerDC48VBFailure
9   extAlarmInputTrigger
10   moduleDown
11   mscSwitchOverOK
12   networkTopologyChange
13   macSpoof
14   cpuHigh
15   memoryUsageHigh
16   packetBufferUsageHigh
17   loopguardOccurence