This object specifies the minimum severity threshold governing
the generation of nmsifthIfThresholdFired and
nmsifthIfThresholdCleared notifications. For example, if the
value of this object is set to 'degrade', then the agent
generates these notifications if and only if the severity of
the threshold being exceeded is 'degrade' or 'fail'. When the
value is other than '0', the generation of
nmsifthTemplateIfStatusChange notifications is also enabled. The
value of '0' disables the generation of all notifications. By
default, the value of this object is set to '0'.