Brocade Fabric Watch Administrator's Guide (53-1000243-01, November 2006)

Fabric Watch Administrator’s Guide 1-13
Publication Number: 53-1000243-01
Configuring Events
1
Data Values
A data value represents three aspects of a fabric: counter value, measured value, or state value. Data
values are updated by Fabric Watch approximately every six seconds, an interval that you cannot change.
Counter value is the total number of times that a given event has occurred. For each monitored event
during the time period, the value is incremental.
Measured value is the current, measurable value of a fabric or fabric element, such as environmental
temperature or fan speed.
State value, which is the only qualitative data value, provides information on the overall state of a fabric
component, such as the physical health of a fan. Instead of numerical data, state values contain
information on whether components are faulty, active, or in another state.
Fabric Watch compares counter values and measured values to a set of configurable limits to determine
whether fabric monitoring has occurred and whether to notify you. You must set appropriate threshold
boundaries to trigger an event.
State values are handled differently, as Fabric Watch monitors state values for certain states, which you
can select. When a state value transitions to one of the monitored states, an event is triggered.
Threshold Values
Threshold values are of the following types:
• “High and Low Thresholds,” next
• “Buffer Values”
High and Low Thresholds
High and low threshold values are the values at which potential problems might occur. For example, in
configuring a temperature threshold, you can select the temperatures at which a potential problem can
occur due to both overheating and freezing.
You can compare high and low thresholds with a data value. The units of measurement are the same as
that of the associated data.