Owner's Manual

Active Performance Monitor 761

In the

Thresholds

screen, examine existing thresholds by clicking on the listed threshold in

the upper panel, then clicking

Edit.

For example

BW Util

(utilized bandwidth) has thresholds

at 90% (High, Critical), 80% (Medium, Warning), and 0% (Low, Cleared). When the data

crosses thresholds, the monitor reacts.

Available attributes depend on the type of monitor you are creating. Notice that if you click

Edit

in the upper

Attribute

panel, you can alter whether crossing this threshold emits a

notification (an alarm that would appear on the Alarm panel), the type of calculation, and so

on. You can even alter existing thresholds, by selecting one, then clicking

Edit

to the right of

the selected threshold.

For the sake of this monitor, we will only examine these capabilities, not alter any thresholds.

Click

Cancel

(twice) to return this screen to its original appearance.

NOTE:

If a threshold’s counter is an SNMP Counter32 (a 32-bit counter) monitoring can exceed its capacity with

a fully utilized gigabit interface in a relatively short period of time. The defaults configured in this monitor

account for this, but if you know that this is an issue, you can probably configure the monitor to account

for it too.

After taking a look at Thresholds no more configuration is required. Notice, however, that you

can also configure

Metrics

on another screen in this editor to calculate additional values based