
Configuring SNMP, RMON, BootP, DHCP, and RARP Services
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You can specify thresholds for numeric variables, such as integer, counter, gauge,
or TimeTick.
Event Group
The event group allows for the generation of an SNMP trap, the generation of a
log entry, or both, for any event you choose. An event can occur when the sample
variable exceeds the alarm threshold or a channel match event generated on an
Ethernet DCM. Traps can be delivered by the RMON agent to multiple
management stations. For information on setting trap destinations, see Cha
pter 3.
You can set up events to either record the monitoring information or to notify the
network management station. The event group includes an event table and a log
table. The event table defines the notification that takes place when an event is
triggered. One form of notification is to write an entry in the log table.
Each entry in the event table identifies an event that can be triggered and indicates
an action, such as writing a log entry to the log table or sending an SNMP trap to
the network management station. The event can trigger any of the following
actions:
• The system sends an SNMP trap to the network management station.
• The management station is notified immediately. The management station
determines how to react to the SNMP trap.
• The system logs the event in the log table in the agent system.
• The management station can retrieve the information stored in the log table
for further analysis. For example, the information collected can be used to
select proper threshold values.
• The system sends an SNMP trap and logs the event in the log table.
The log table is a read-only data table for the network management station. It
records each event that needs to be logged. It provides the event number, an index
that distinguishes occurrences of the same event, the time at which the event
occurred, and the event description. You are not required to configure the log
table.
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