Users Guide

Monitoring Network Availability | Performance Monitoring
OMNM 6.5.3 User Guide 389
After taking a look at Thresholds no more configuration is required. Notice, however, that you
can also configure
Calculated Metrics , Inventory Mappings and Conditions on other screens
in this editor to calculate additional values based on the monitored attributes, to map them,
and to make conditional properties based on monitored behavior.
NOTE:
Calculated Metrics is particularly valuable if you want to monitor a composite like ifInErrors + ifOutErrors
or want to calculate a parameter like errors per minute when the monitor’s interval is 5 minutes.
11
Click Save and the monitor is now active.
Notice that the
Availability icon appears at the top of a Monitor Status Summary snap panel
in the
Expanded Resource Monitor next to a time/date stamp of its last polling. Right-click
the monitor and select
Refresh Monitor to manually initiate polling.
Values displayed in the Overall Availability column of the Monitor Manager do not
automatically refresh and may be out of date. The
Reference Tree snap panel maps the
monitor’s relationship to its target(s) attribute(s) and other elements. The
Details snap panel
summarizes the monitor’s configuration.
12 For information about having the monitor’s results appear in the a Dashboard portlet, see
Dashboard Views on page 425.
How To:
Create an ICMP Monitor
The following steps create an ICMP (ping) monitor.
1 In the Resource Monitors portlet, and create a new monitor by right-clicking and selecting
New .
2 Select the type of monitor from the submenu—for this example, an ICMP monitor.
3 In the General screen, enter a name (Test ICMP Monitor), and a polling interval (5 minutes is
the default). For this example, check
Retain polled data and accept the remaining defaults for
checkboxes and the retention policy.
4 Select an entity to monitor by clicking the Add button in the top portion of the Monitor
Options
screen.
5 Select devices you want to ping, (Ctrl+click to add more than one), then click Add Selection
then
Done to confirm your entity.
6 Define packets in the ICMP Monitor Options panel, including Packet Size, Packet Count and
timeout. You can accept the defaults here, too.
7 In the Thresholds tab, select an attribute (MaxRTT, or maximum round trip time) and add
the following thresholds by clicking
Add :
Name
High color red, Lower Boundary 15 and Upper Boundary [blank] Severity Critical
Name
Fine color green, Lower Boundary 0 and Upper Boundary 15 Severity Cleared .
Notice that this example does not emit a notification. If you checked that checkbox, an alarm
of the configured severity would accompany crossing the threshold.