2-12 IPv4 ACL ConfigurationWhen configuring an IPv4 ACL, go to these sections for information you are interested in:z Creating a Time Rangez Configuring a Basic IPv4 ACLz Configuring an Advanced IPv4 ACLz Configuring an Ethernet Frame Header ACLz Copying an IPv4 ACLz Displaying and Maintaining IPv4 ACLsCreating a Time RangeTwo types of time ranges are available:z Periodic time range, which recurs periodically on the day or days of the week.z Absolute time range, which takes effect only in a period of time and does not recur.Configuration ProcedureFollow these steps to create a time range:To do… Use the command… RemarksEnter system view system-view ––Create a time rangetime-range time-range-name{ start-time to end-time days[ from time1 date1 ] [ to time2date2 ] | from time1 date1 [ totime2 date2 ] | to time2 date2 }RequiredDisplay the configuration andstatus of one or all time rangesdisplay time-range{ time-range-name | all }OptionalAvailable in any viewYou may create a maximum of 256 time ranges.A time range can be one of the following:z Periodic time range created using the time-range time-range-name start-time to end-time dayscommand. A time range thus created recurs periodically on the day or days of the week. A periodictime range is active only when the system time falls within it.z Absolute time range created using the time-range time-range-name { from time1 date1 [ to time2date2 ] | to time2 date2 } command. Unlike a periodic time range, a time range thus created doesnot recur. For example, to create an absolute time range that is active between January 1, 200400:00 and December 31, 2004 23:59, you may use the time-range test from 00:00 01/01/2004 to23:59 12/31/2004 command.
