3Com Switch 8800 Configuration Guide Chapter 48 RMON Configuration48-4Table 48-4 Add/delete an entry to/from the extended RMON alarm tableOperation CommandAdd an entry to the extendedRMON alarm tablermon prialarm entry-number alarm-var[ alarm-des ] sampling-timer { delta | absolute |changeratio } rising-threshold threshold-value1event-entry1 falling-threshold threshold-value2event-entry2 entrytype { forever | cyclecycle-period } [ owner text ]Delete an entry from theextended RMON alarm table undo rmon prialarm entry-numberAfter you define the extended alarm entry, the system processes the entry in thefollowing way:1) Sampling the defined prialarm-formula according to the time intervalsampling-time that you have set2) Performing the operation to the sampled value according to the defined formulaprialarm-formula3) Comparing the resule with the configured threshold and handling them in the waydescribed in the following tableTable 48-5 Handling the extended alarm entryCase ProcessingThe result is greater than the configuredupper limit threshold-value1The defined event event-entry1 istriggeredThe result is less than the configured lowerlimit threshold-value2The defined event event-entry2 istriggered48.2.4 Adding/Deleting an Entry to/from the History Control TableThe history data management helps you set the history data collection, periodical datacollection and storage of the specified ports. The sampling information includes theutilization ratio, error counts and total number of packets.You can use the following commands to add/delete an entry to/from the history controltable.Perform the following configuration in Ethernet port view.Table 48-6 Add/delete an entry to/from the history control tableOperation CommandAdd an entry to the historycontrol table.rmon history entry-number buckets numberinterval sampling-interval [ owner text-string ]
