Westermo RedFox Series - Manual (Page 536)

Westermo OS Management Guide
Version 4.17.0-0
Temperature sensors
Digital In sensors
Link−alarm (ports/interfaces)
RMON counters (ports/interfaces)
FRNT Ring Status
Examples:
Alarm sources
ON LED
Digital Out
SNMP Trap
Logging
Examples:
Alarm targets
Alarm targets specify:
Alarm type and source(s), e.g., "temperature sensor 1"
Alarm thresholds and condition (e.g., ’alarm’ for
Alarm action "index", i.e., point out the action to
Alarm severity, e.g., DEBUG, INFO, etc.
temperatures above 50 degrees.)
invoke when the trigger becomes "active" and "inactive".
Alarm triggers
Alarm actions specify:
Alarm targets
Alarm actions
Figure 24.1: Overview of WeOS alarm entities: Alarm triggers monitor the state of
alarm source, and define conditions and thresholds when to invoke an associated
alarm action. The invoked alarm action specifies what alarm target(s) to use to
notify the operator.
❼ Alarm sources: An alarm source is an object being monitored by an alarm
trigger, e.g., the link status (up/down) of an Ethernet port, the input byte
counter of a network interface, or the temperature value of a temperature
sensor. Alarm sources are described further in
section 24.1.2 .
❼ Alarm trigger: An alarm trigger monitors alarm sources, and defines the
conditions when alarm events occur, i.e., when the trigger becomes active
(alarm situation) or inactive (normal situation).
In addition, the alarm trigger specifies the alarm action to be invoked once
an alarm event occurs. Alarm triggers are described further in
section 24.1.3 .
❼ Alarm actions and alarm targets: When an alarm event occurs, the operator
can be notified via SNMP traps, logging, digital-out, and front panel status
LED. These notification mechanisms are referred to as alarm targets.
Instead of mapping triggers directly to targets, a trigger is mapped to an
alarm action (profile). The alarm action defines what specific targets to use
when an alarm event occurs. For example, a link alarm trigger for ports 1-3
can be mapped to a specific alarm action, which in turn specifies logging
and SNMP traps as targets. Alarm actions and targets are described further
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