1-5z The entry-number must be globally unique and cannot be used on another interface; otherwise, theoperation fails.z You can configure multiple history entries on one interface, but the values of the entry-numberarguments must be different, and the values of the sampling-interval arguments must be differenttoo; otherwise, the operation fails.z You can create up to 100 history entries for the device.z When you create an entry in the history table, if the specified buckets number argument exceedsthe history table size supported by the device, the entry will be created. However, the validatedvalue of the buckets number argument corresponding to the entry is the history table sizesupported by the device.Configuring the RMON Alarm FunctionConfiguration Prerequisitesz If you need to configure that the managed devices send traps to the NMS when it triggers an alarmevent, you should configure the SNMP agent as described in SNMP Configuration beforeconfiguring the RMON alarm function.z If the alarm variable is the MIB variable defined in the history group or the Ethernet statistics group,you must make sure that the RMON Ethernet statistics function or the RMON history statisticsfunction is configured on the monitored Ethernet interface; otherwise, the creation of the alarmentry fails, and no alarm event is triggered.Configuration ProcedureFollow these steps to configure the RMON alarm function:To do… Use the command… RemarksEnter system view system-view —Create an event entry in the eventtablermon event entry-number [ descriptionstring ] { log | log-trap log-trapcommunity |none | trap trap-community } [ owner text ]RequiredCreate an entry in the alarm tablermon alarm entry-number alarm-variablesampling-interval { absolute | delta }rising-threshold threshold-value1event-entry1 falling-thresholdthreshold-value2 event-entry2 [ ownertext ]Create an entry in the privatealarm tablermon prialarm entry-numberprialarm-formula prialarm-dessampling-interval { absolute | changeratio| delta } rising-threshold threshold-value1event-entry1 falling-thresholdthreshold-value2 event-entry2 entrytype{ forever | cycle cycle-period } [ ownertext ]RequiredUse at least onecommand.
