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Configuring time ranges
You can implement a service based on the time of the day by apply a time range to it. A time-based
service only takes effect in any time periods specified by the time range. For example, you can implement
time-based ACL rules by applying a time range to them. If a time range does not exist, the service based
on the time range does not take effect.
The following basic types of time range are available:
• Periodic time range—Recurs periodically on a day or days of the week.
• Absolute time range—Represents only a period of time and does not recur.
A time range is uniquely identified by the time range name. You can create a maximum of 1024 time
ranges, each with a maximum of 32 periodic statements and 12 absolute statements. The active period
of a time range is calculated as follows:
1. Combining all periodic statements
2. Combining all absolute statements
3. Taking the intersection of the two statement sets as the active period of the time range
Configuration procedure
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Create or edit a time
range.
time-range time-range-name { start-time to
end-time days [ from time1 date1 ] [ to
time2 date2 ] | from time1 date1 [ to
time2 date2 ] | to time2 date2 }
No time range exists.
Displaying and maintaining time ranges
Execute the display command in any view.
Task Command
Display time range configuration and status display time-range { time-range-name | all }
Time range configuration example
Network requirements
As shown in Figure 26, configure an ACL on Device A to allow Host A to access the server only during
8:00 and 18:00 on working days from June 2011 to the end of the year.
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