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date — Date of the month (Range:1 - 31)
§
§
month — Month (Range: first three letters by name)
§
year — year - no abbreviation (Range: 2000 - 2097)
§
hh:mm — Time in military format, in hours and minutes (Range:hh: 0 - 23, mm:0 - 59)
offset offset — Number of minutes to add during summer time (Range: 1 - 1440).
§
§
zone acronym — The acronym of the time zone to be displayed when summer time is in effect. If unspecified
default to the timezone acronym. (Range: Up to 4 characters)
Default Configuration
Summer time is disabled.
offset offset—default is 60
zone acronym— If unspecified default to the timezone acronym
Command Mode
Global Configuration mode
User Guidelines
In both the date and recurring forms of the command, the first part of the command specifies when summer time begins,
and the second part specifies when it ends. All times are relative to the local time zone. The start time is relative to standard
time. The end time is relative to summer time. If the starting month is chronologically after the ending month, the system
assumes that you are in the southern hemisphere.
USA rule for daylight saving time:
Start: First Sunday in April
End: Last Sunday in October
Time: 2 am local time
EU rule for daylight saving time:
Start: Last Sunday in March
End: Last Sunday in October
Time: 1.00 am (01:00) Greenwich Mean Time (GMT)
Examples
The following example sets summer time starting on the first Sunday in April at 2am and finishing on the last Sunday in
October at 2 am.
Console (config)# clock summer-time recurring first sun apr 2:00 last sun oct 2:00
3.5.5 sntp authentication-key
The sntp authentication-key global configuration command defines an authentication key for Simple Network Time
Protocol (SNTP). To remove the authentication key for SNTP, use the no form of this command.
Syntax
sntp authentication-key number md5 value
no sntp authentication-key number
§
number — Key number (Range: 1 - 4294967295)
§
value — Key value (Range: Up to 8 characters)
Default Configuration
No authentication key is defined.
Command Mode
Global Configuration mode
User Guidelines
There are no user guidelines for this command.
Examples
The following example defines the authentication key for SNTP.
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