Defining Rmon Alarms - D-Link DES-3010PA - Switch Web User Manual

Defining RMON Alarms

The RMON Alarm Page contains fields for setting network alarms. Network alarms occur when a network
problem, or event, is detected. Rising and falling thresholds generate events. To set RMON alarms:
1. Click Advanced Setup > RMON > Alarm. The RMON Alarm Page opens.
Figure 161:RMON Alarm Page
The RMON Alarm Page contains the following fields:
•
Alarm Entry — Indicates a specific alarm.
•
Counter Name — Displays the selected MIB variable.
•
Interface — Displays interface for which RMON statistics are displayed. The possible field values are:
–
Port — Displays the RMON statistics for the selected port.
–
LAG — Displays the RMON statistics for the selected LAG.
•
Counter Value — Displays the selected MIB variable value.
•
Sample Type — Defines the sampling method for the selected variable, and compares the value against the
thresholds. The possible field values are:
–
Delta — Subtracts the last sampled value from the current value. The difference in the values is
compared to the threshold.
–
Absolute — Compares the values directly with the thresholds at the end of the sampling interval.
•
Rising Threshold — Displays the rising counter value that triggers the rising threshold alarm. The rising
threshold is presented on top of the graph bars. Each monitored variable is designated a color.
•
Rising Event — Displays the mechanism in which the alarms are reported. The possible field values are:
–
LOG — Indicates there is not a saving mechanism for either the device or in the management system. If
the device is not reset, the entry remains in the Log Table.
–
TRAP — Indicates that an SNMP trap is generated, and sent via the Trap mechanism. The Trap can also
be saved using the Trap mechanism.
–
Both— Indicates that both the Log and Trap mechanism are used to report alarms.
•
Falling Threshold — Displays the falling counter value that triggers the falling threshold alarm. The falling
threshold is graphically presented on top of the graph bars. Each monitored variable is designated a color.
•
Falling Event — Displays the mechanism in which the alarms are reported.
Page 249
Viewing Statistics
Managing RMON Statistics