Owners Manual

Monitoring Network Availability | Performance Monitoring
416 OMNM 6.5.2 User Guide
When determining the “not available” status of a device, SNMP AdminStatus and
OperationalStatus messages both have to indicate a device is Available before a monitor
determines it is available.
Certain devices that do not support ifTable availability indicators. For the sake of these devices, a
Skip availability check checkbox appears.
The
Skip Polling Interval configures skipped availability checks when polling, so you can check
availability, for example, every fourth polling interval (skipping three). This helps the monitor avoid
flutter artifacts
The PF and IF table columns indicate if a port filter or interface filter is configured for the entity.
Click the icons on the right side of the list of Monitor Entities to configure filters. Clicking these
buttons displays an interface configuration panel.
This panel lets you specify filter attributes for the port or interface filters you want to monitor. For
example, if you select a device but only want to monitor active interfaces created by a particular
user, then these filters do the job.
The SNMP Attributes panel is the same as described in
SNMP on page 413.
SNMP Table Monitor
This panel appears if you are editing an SNMP Table monitor. The application stores not absolute
numbers from counters but the counter’s change since its last measurement.
Columns include the SNMP Attribute Name, OID, Row Identifier, Foreign Key, Series Name, Meta
Syntax, Units, and Action.
NOTE:
If you select one of the 64-bit counters in ifXTable, make sure the Meta Syntax is 64-bit.