D-Link DES-3550 Command Line Interface Reference Manual page 227

config dst
annual - Using annual mode will enable DST seasonal time adjustment. Annual mode requires
that the DST beginning and ending date be specified concisely. For example, specify to begin
DST on April 3 and end DST on October 14.
s_week - Configure the week of the month in which DST begins.
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e_week - Configure the week of the month in which DST ends.
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s_day – Configure the day of the week in which DST begins.
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e_day - Configure the day of the week in which DST ends.
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s_mth - Configure the month in which DST begins.
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e_mth - Configure the month in which DST ends.
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s_time – Configure the time of day to begin DST.
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e_time - Configure the time of day to end DST.
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s_date - Configure the specific date (day of the month) to begin DST.
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e_date - Configure the specific date (day of the month) to begin DST.
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offset [30 | 60 | 90 | 120] - Indicates number of minutes to add or to subtract during the
summertime. The possible offset times are 30,60,90,120. The default value is 60
Restrictions Only administrator-level users can issue this command.
Example usage:
To configure daylight savings time on the Switch:
DES-3550 Layer 2 Fast Ethernet Switch
<start_week 1-4,last> - The number of the week during the month in which DST
begins where 1 is the first week, 2 is the second week and so on, last is the last week
of the month.
<end_week 1-4,last> - The number of the week during the month in which DST ends
where 1 is the first week, 2 is the second week and so on, last is the last week of the
month.
<start_day sun-sat> - The day of the week in which DST begins expressed using a
three character abbreviation (sun, mon, tue, wed, thu, fri, sat)
<end_day sun-sat> - The day of the week in which DST ends expressed using a three
character abbreviation (sun, mon, tue, wed, thu, fri, sat)
<start_mth 1-12> - The month to begin DST expressed as a number.
<end_mth 1-12> - The month to end DST expressed as a number.
<start_time hh:mm> - Time is expressed using a 24-hour clock, in hours and minutes.
<end_time hh:mm> - Time is expressed using a 24-hour clock, in hours and minutes.
<start_date 1-31> - The start date is expressed numerically.
<end_date 1-31> - The end date is expressed numerically.
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