Switch User Manual

96 Clock
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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.
sntp authentication-key
The sntp authentication-key Global Configuration mode 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.
Console (config)# clock summer-time recurring first sun apr 2:00
last sun oct 2:00