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EMC Connectrix B Series Fabric Watch Reference Manual
Introducing Fabric Watch
Threshold
Boundaries
Boundaries are the characteristics that define a threshold. Boundaries
are area-based; when you configure a boundary, that boundary
applies to every element in an area. Boundaries are non-volatile; you
do not need to reconfigure your boundaries when you restart your
switch. Table 1-4 lists the boundaries that can define a threshold and
what each boundary identifies.
Threshold Traits
You configure threshold traits to determine whether and when an
event registers against a given threshold. Threshold traits determine
the behavior of a threshold.
These traits are element-based, so you must configure traits for each
individual element. Threshold traits are volatile, so you must reconfigure all
traits after you restart your switch.
Table 1-4 Threshold Boundaries
Boundary Definition
Unit string Unit of measurement that Fabric Watch alarms will use to display the
value of a particular counter.
You can change the unit string to an arbitrary value with the
Fwconfigure
command.
Time base Basic unit of time in which events are recorded.
Low boundary Lowest limit at which the monitored value of an element will not
register as an event.
High boundary Highest limit at which the monitored valued of an element will not
register as an event.
Buffer size Size of a threshold buffer. The buffer size determines the distance
between the upper buffer and the upper boundary, and the distance
between the lower buffer and the lower boundary. The buffer size
establishes the buffer zones, refer to Figure 1-1 on page 1-8.
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