Brocade Fabric Watch Administrator's Guide Supporting Fabric OS v6.0.0 (53-1000601-01, October 2007)

Fabric Watch Administrator’s Guide 15

53-1000601-01

Configuring events

FIGURE 5 Example without an event

Event settings

This section describes how Fabric Watch compares a fabric element’s data value against a

threshold value to determine whether or not to trigger an event. It describes how a specified buffer

zone impacts event triggering.

Fabric Watch monitors data values for one of the following conditions:

• “Above event triggers,” next

• “Below event trigger” on page 16

• “Changed event trigger” on page 16

• “In-between event triggers” on page 17

For Fabric Watch to monitor these conditions, the alarm setting must be set to a nonzero value.

Above event triggers

Use the Above event trigger for an element that requires only high threshold monitoring. In the

Above event trigger, Fabric Watch triggers an event immediately after the data value becomes

greater than the high threshold.

Define a buffer zone within the operational limit of an area to suppress multiple events when the

counter value goes above the high threshold and fluctuates around it. The next event will not occur

until the counter value falls below the buffer zone created by the high threshold. Figure 6 shows an

Above event trigger with a buffer zone. The Above event trigger occurs when the counter crosses

the high threshold (event 1 in Figure 6). When the data value becomes less than the high threshold

and buffer value, Fabric Watch triggers a second event (Event 2) to indicate that it has returned to

normal operation. The second event will not be triggered until the counter value falls below the high

threshold and buffer values.