The periodic command is used to specify a
recurring range of days and times to be included in the time-range created in
the previous command. Using this command allows a feature to be implemented on
only certain days of the week and within certain hours. The command is issued in
the Time-Range Configuration mode, which is activated by the
time-range command. The syntax is
Router(config-time-range)#periodic days-of-the-week hh:mm to [days-of-the-week] hh:mm
The first occurrence of the hh:mm argument is the starting hours:minutes that the time range
is in effect. The second occurrence is the ending hours:minutes the statement is
in effect. Times are expressed using the 24-hour clock; therefore, 8:00 P.M. would be typed as 20:00. The
keyword to is required to complete the range, as in start-time to end-time.
|
Note |
Remember, all time specifications are interpreted as local
time. To ensure the time range entries take effect at the desired times, the
software clock should be synchronized using the Network Time Protocol (NTP) or
some other authoritative time source. |
The days-of-the-week argument can seem
complicated until you become used to it. Used properly, this can be used to
represent a single day or combination of days using the following keywords:
Monday, Tuesday, Wednesday, Thursday, Friday,
Saturday, Sunday— day names
daily Monday through Sunday
weekdays Monday through Friday
weekend Saturday and
Sunday
The following examples should help you understand the process. The
following lines create a time range for a single day named MondayDays, and then
define the day and hours (8:00 A.M. to 5:30 P.M.).
Router(config)#time-range MondayDays
Router(config-time-range)#periodic monday 8:00 to 17:30
When multiple days can be defined by the keywords daily, weekday,
and weekend, the keyword is used. The next lines creates a time range named
WeekdayEves, and then define hours (5:00 P.M. to
10:00 P.M.). In this example, the feature is to be
implemented Monday through Friday.
Router(config)#time-range WeekdayEves
Router(config-time-range)#periodic weekdays 17:00 to 22:00
When multiple days other than those defined by the keywords daily,
weekday, and weekend are required, the days are listed separated by spaces. The
next lines create a time range named TuThuEves and then defines the days and
hours (5:00 P.M. to 10:00 P.M.).
Router(config)#time-range TuThuEves
Router(config-time-range)#periodic tuesday thursday 17:00 to 22:00
With a recurring time range on consecutive days, other than those
defined by the keywords, the days are also listed separated by spaces. The next
lines create a time range named SunMonTue and then define the hours (5:00 P.M. to 10:00 P.M.) included
each day.
Router(config)#time-range SunMonTue
Router(config-time-range)#periodic sunday monday tuesday thursday 6:00 to 9:00
With a time range that “spans” consecutive days, the optional days-of-the-week after the to is used. The
next lines create a time range named MonToWed, and then define the start and
ending time as 8:00 A.M. Monday to Wednesday at
5:00 P.M.
Router(config)#time-range MonToWed
Router(config-time-range)#periodic Monday 8:00 to Wednesday 17:00
Multiple periodic entries are allowed per time-range command.
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