Chapter
Configuring the Switch
2
24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Statistics > RMON Alarms
The RMON Alarms screen allows you to record important
events and critical network problems . The RMON Alarm
and Event Control Tables are used together to define
specific criteria that will generate response events .
Alarms can be set to test data over any specified time
interval and can monitor absolute or changing values,
such as a statistical counter reaching a specific value, or a
statistic changing by a certain amount over a set interval .
Alarms can be set to respond to either rising or falling
thresholds .
Statistics > RMON Alarms
The Alarm Control Table allows you to add, update and
delete specific index entries .
Interface
The selected interface on the Switch .
Statstcs
The traffic statistics to be sampled . Select from
the drop-down list .
Interval
The time interval in seconds over which data
is sampled and compared with the rising or falling
threshold .
Sample Type
The method of sampling data, either
Absolute or Delta . For an absolute sample the variable will
be compared directly to the thresholds . For a delta sample
the last sample is subtracted from the current value and
the difference is then compared to the thresholds .
Startup Alarm
How the alarm is activated when the
variable is compared to the thresholds . This can be set to
Rising, Falling, or Rising or Falling .
Rsng Threshold
An alarm threshold for the sampled
variable . If the current value is greater than or equal to
the threshold, and the last sample value was less than the
threshold, then an alarm will be generated . (After a rising
event has been generated, another such event will not be
generated until the sampled value has fallen below the
Rising Threshold and reaches the Falling Threshold .)
Fallng Threshold
An alarm threshold for the sampled
variable . If the current value is less than or equal to the
threshold, and the last sample value was greater than the
threshold, then an alarm will be generated . (After a falling
event has been generated, another such event will not be
generated until the sampled value has risen above the
Falling Threshold and reaches the Rising Threshold .)
Rsng Event Index (0-)
The index of the Event
that will be used if a rising alarm is triggered . If there is no
corresponding entry in the Event Control Table, or if this
number is zero, then no event will be generated .
Fallng Event Index (0-)
The index of the Event
that will be used if a falling alarm is triggered . If there is no
corresponding entry in the Event Control Table, or if this
number is zero, then no event will be generated .
Owner
The name of the person who created this entry in
the Control Table .
Statistics > RMON Events
An RMON Event determines the action to take when an
alarm is triggered . The response to an alarm can include
logging the alarm or sending an SNMP trap message . If
the response corresponding to an alarm has not yet been
defined, use the RMON Event screen to configure the
Event Setting table .
Statistics > RMON Events
