1-4Note that:z If only a periodic time section is defined in a time range, the time range is active only when thesystem time is within the defined periodic time section. If multiple periodic time sections are definedin a time range, the time range is active only when the system time is within one of the periodic timesections.z If only an absolute time section is defined in a time range, the time range is active only when thesystem time is within the defined absolute time section. If multiple absolute time sections aredefined in a time range, the time range is active only when the system time is within one of theabsolute time sections.z If both a periodic time section and an absolute time section are defined in a time range, the timerange is active only when the periodic time range and the absolute time range are both matched.Assume that a time range contains an absolute time section ranging from 00:00 January 1, 2004 to23:59 December 31, 2004, and a periodic time section ranging from 12:00 to 14:00 on everyWednesday. This time range is active only when the system time is within the range from 12:00 to14:00 on every Wednesday in 2004.z If the start time is not specified, the time section starts from 1970/1/1 00:00 and ends on thespecified end date. If the end date is not specified, the time section starts from the specified startdate to 2100/12/31 23:59.Configuration Example# Define a periodic time range that spans from 8:00 to 18:00 on Monday through Friday. system-view[Sysname] time-range test 8:00 to 18:00 working-day[Sysname] display time-range testCurrent time is 13:27:32 Apr/16/2005 SaturdayTime-range : test ( Inactive )08:00 to 18:00 working-day# Define an absolute time range spans from 15:00 1/28/2006 to 15:00 1/28/2008. system-view[Sysname] time-range test from 15:00 1/28/2006 to 15:00 1/28/2008[Sysname] display time-range testCurrent time is 13:30:32 Apr/16/2005 SaturdayTime-range : test ( Inactive )From 15:00 Jan/28/2000 to 15:00 Jan/28/2004Configuring Basic ACLA basic ACL filters packets based on their source IP addresses.A basic ACL can be numbered from 2000 to 2999.Configuration Prerequisitesz To configure a time range-based basic ACL rule, you need to create the corresponding time rangefirst. For information about time range configuration, refer to section Configuring Time Range.z The source IP addresses based on which the ACL filters packets are determined.
