Specifications

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Cisco Content Services Switch Getting Started Guide
OL-6711-01
Chapter 2 Configuring CSS Basics
Configuring the Date, Time, and Time Zone
Configuring Daylight Saving Time
By default, the CSS does not automatically change its clock for daylight saving
time (DST). You can configure the CSS clock to automatically change to
accommodate DST and its different policies in countries and territories
worldwide. In many places in the world, DST is also known as Summer Time.
The DST feature on the CSS allows you to configure the date to begin and end
DST, the time of day, and the number of minutes to offset the time. The DST
feature is compatible with the CSS SNTP feature, but also works without having
SNTP configured. A CSS configured with both SNTP and DST relies on SNTP to
obtain the Coordinated Universal Time (UTC), and the CSS clock timezone
information to provide the proper offset from UTC.
Note Commands that are scheduled in the command scheduler may be affected by the
time change when DST begins and ends. If a command is scheduled for execution
at the same time period when the clock moves forward on the start of DST, then
the CSS does not execute this command. However, when the time reverts back at
the conclusion of the DST period and a command is scheduled for execution at
this time, then the CSS executes the command twice.
To configure the CSS clock for DST, use the clock summer-time command in
SuperUser mode. Through this command, you can configure DST to occur every
year or for a single year occurrence on the CSS. You can also configure the
number of minutes to offset the time. See the following sections to configure DST
on the CSS:
• Configuring DST to Occur Every Year
• Configuring DST for Only One Year
• Disabling DST on the CSS
To view the DST configuration or whether DST is disabled on the CSS, use the
show clock command. For more information, see the “Showing the Date and
Time” section.
Note The CSS stores DST configuration information in NVRAM.