Configuring System Monitoring Thresholds; Creating Events - Alcatel-Lucent 7210 SAS M Configuration Manual

Configuring System Monitoring Thresholds

Creating Events

The event command controls the generation and notification of threshold crossing events
configured with the alarm command. When a threshold crossing event is triggered, the rmon
event configuration optionally specifies whether an entry in the RMON-MIB log table be created
to record the occurrence of the event. It can also specify whether an SNMP notification (trap) be
generated for the event. There are two notifications for threshold crossing events, a rising alarm
and a falling alarm.ping-address
Creating an event entry in the RMON-MIB log table does not create a corresponding entry in the
event logs. However, when the event is set to trap the generation of a rising alarm or falling alarm
notification creates an entry in the event logs and that is distributed to whatever log destinations
are configured: console, session, memory, file, syslog, or SNMP trap destination. The logger
message includes a rising or falling threshold crossing event indicator, the sample type (absolute
or delta), the sampled value, the threshold value, the rmon-alarm-id, the associated rmon-event-id
and the sampled SNMP object identifier.
The alarm command configures an entry in the RMON-MIB alarm table. The alarm command
controls the monitoring and triggering of threshold crossing events. In order for notification or
logging of a threshold crossing event to occur there must be at least one associated rmon event
configured.
The agent periodically takes statistical sample values from the MIB variable specified for
monitoring and compares them to thresholds that have been configured with the alarm command.
The alarm command configures the MIB variable to be monitored, the polling period (interval),
sampling type (absolute or delta value), and rising and falling threshold parameters. If a sample
has crossed a threshold value, the associated 'event' is generated.
Preconfigured CLI threshold commands are available. Preconfigured commands hide some of the
complexities of configuring RMON alarm and event commands and perform the same function. In
particular, the preconfigured commands do not require the user to know the SNMP object
identifier to be sampled. The preconfigured threshold configurations include memory warnings
and alarms and compact flash usage warnings and alarms.
7210 SAS M, T, X, R6 Basic System Configuration Guide
System Management
Page 299