140 MES1000, MES2000 Ethernet Switches
5.19.5 Remote network monitoring protocol (RMON)
Network monitoring protocol (RMON) is the extension of SNMP protocol that provides broader
network traffic management capabilities. The main difference between RMON and SNMP is the nature of
the information being collected. The data collected by RMON describes the traffic between the network
nodes. Information collected by the agent is transmitted to the network management application.
Global configuration mode commands
Command line request in global configuration mode appears as follows:
console(config)#
Table 5.148 —Global configuration mode commands
Configure events used in the remote monitoring system.
- index—event index
- type—type of notification generated by the device for this
event:
none—do not create the notification
log—create table record
trap—send SNMP trap
log-trap—create table record and send SNMP trap
- community—SNMP community string for trap transmission
- description—event description
- owner—event creator name
Configure the alarm event trigger criteria.
- index—alarm event index
- mib_object_id—variable part identifier of the OID object
- interval—time period when data is collected and compared
to rising and falling thresholds
- rthreshold—rising threshold
- fthreshold—falling threshold
- revent—event index that is used for crossing the rising
threshold
- fevent—event index that is used for crossing the falling
threshold
- type—variable collection and value calculation method for
the threshold comparison:
absolute method—absolute value of the selected variable will
be compared to the threshold at the end point of the control
interval
delta method—value of the variable collected in the last
selection will be deducted from the current value and the
difference will be compared to thresholds (the difference
between the variable values at the start point and the end
point of the control interval)
- startup—event generation instruction at the first control
interval Define alarm event generation rules for the first
control interval by comparing the selected variable with the
one of the thresholds or both thresholds:
- rising—generate a single alarm event for the rising threshold,
if the selected variable value at the first control interval is
above or equal to this threshold
- falling—generate a single alarm event for the falling
threshold, if the selected variable value at the first control
interval is below or equal to this threshold
- rising-falling—generate a single alarm event for the rising
and/or falling threshold, if the selected variable value at the
first control interval is is above or equal to the rising
threshold/below or equal to the falling threshold
- owner —alarm event creator name
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