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

1-16 Fabric Watch Administrator’s Guide
Publication Number: 53-1000243-01
Configuring Events
1
The following examples illustrate each point.
Example1: Triggering an Event
Figure 1-4 shows a sample graph of data obtained by Fabric Watch (the type of data is irrelevant to the
example). A high threshold of 2 is specified to trigger an event. A time base of minute is defined. An
event occurs only if the rate of change in the specific interval (one minute in this example) is across the
threshold boundary. It should be either higher than the high threshold limit or lower than the low
threshold limit.
As illustrated on the tenth sample, the counter value changes from 0 to 1; hence calculated rate of change
is 1 per minute. At the thirteenth sample, the rate of change is 2 per minute. The rate of change must be
at least 3 per minute to exceed the event-triggering requirement of 2, which is met on the eighteenth
sample.
Figure 1-4 Event Trigger