1-11To do… Use the command… RemarksSpecify to send trap messageswhen the traffic detectedexceeds the upper threshold ordrops down below the lowerthreshold from a point higherthan the upper thresholdstorm-constrain enable trapOptionalBy default, the system sendstrap messages when the trafficdetected exceeds the upperthreshold or drops down belowthe lower threshold from a pointhigher than the upperthreshold.Specify to send log when thetraffic detected exceeds theupper threshold or drops downbelow the lower threshold froma point higher than the upperthresholdstorm-constrain enable logOptionalBy default, the system sendslog when the traffic detectedexceeds the upper threshold ordrops down below the lowerthreshold from a point higherthan the upper threshold.z For network stability sake, configure the interval for generating traffic statistics to a value that is notshorter than the default.z The storm constrain function, after being enabled, requires a complete statistical period (specifiedby the storm-constrain interval command) to collect traffic data, and analyzes the data in the nextperiod. Thus, it is normal that a period longer than one statistic period is waited for a control actionto happen if you enable the function while the packet storm is present. However, the action will betaken within two periods.z The storm constrain function is applicable to unicast packets, multicast packets, and broadcastpackets; and you can specify the upper and lower threshold for any of the three types of packets.Displaying and Maintaining an Ethernet InterfaceTo do… Use the command… RemarksDisplay the current state of aninterface/subinterface and therelated informationdisplay interface [ interface-type[ interface-number ] ] Available in any viewDisplay the summary of aninterface/subinterfacedisplay brief interface [ interface-type[ interface-number ] ] [ | { begin | exclude| include } regular-expression ]Available in any viewClear the statistics of aninterface/subinterfacereset counters interface [ interface-type[ interface-number ] ] Available in user viewDisplay the Combo ports andthe correspondingoptical/electrical portsdisplay port combo Available in any viewDisplay the information about amanual port group or all theport groupsdisplay port-group manual [ all | nameport-group-name ] Available in any viewDisplay the information aboutthe loopback function display loopback-detection Available in any view
