NETGEAR NMS100 - Manual (Page 37)

Polling and Emailing 4-1
September 2004 202-10058-01
Chapter 4
Polling and Emailing
Setting Threshold Alarms
You can generate a Threshold Alarm when a polled SNMP variable value meets certain criteria.
ProSafe NMS supports three distinct mechanisms for generating Threshold Alarms as described in
the following table.
Table 4-1. Threshold Alarms
Alarm Type Description
Status Variable Polling Use the Object Properties dialog to set a single SNMP
variable plus instance that is polled in real time (Poll Interval
attribute seconds). Use this for Emergency Status Polling. For
example, poll for UPS battery failure, disk full, or link down
conditions.
Automatic Trend Baseline ProSafe NMS automatically determines a baseline value for
all variables in any trend reports that you add. The baseline is
set after a learning period and periodically adjusted. The
polling agent will generate alarms if a polled value exceeds
the baseline by a preset percentage.
Manual Trend Threshold Use manual threshold alarms in trend reports to specify a
particular condition to test. This is commonly used to monitor
line utilization variables. In this case the alarm condition is well
known to the user and involves a longer polling period (for
example, 80% over 10 minutes).