Cisco IE 4000, Software Configuration Manual

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Performing Switch Administration
How to Perform Switch Administration
Configuring the Time Zone
The minutes-offset variable in the clock timezone global configuration command is available for those cases where a
local time zone is a percentage of an hour different from UTC. For example, the time zone for some sections of Atlantic
Canada (AST) is UTC-3.5, where the 3 means 3 hours and .5 means 50 percent. In this case, the necessary command
is
clock timezone AST -3 30 .
Configuring Summer Time (Daylight Saving Time)
To configure summer time (daylight saving time) in areas where it starts and ends on a particular day of the week each
year, perform this task:
Command Purpose
1. configure terminal Enters global configuration mode.
2. clock timezone zone hours-offset
[ minutes-offset ]
Sets the time zone.
The switch keeps internal time in universal time coordinated (UTC), so this
command is used only for display purposes and when the time is
manually set.

zone —Enters the name of the time zone to be displayed when
standard time is in effect. The default is UTC.

hours-offset —Enters the hours offset from UTC.

(Optional) minutes-offset —Enters the minutes offset from UTC.
3. end Returns to privileged EXEC mode.
Command Purpose
1. configure terminal Enters global configuration mode.
2. clock summer-time zone recurring
[ week day month hh : mm week day
month hh : mm [ offset ]]
Configures summer time to start and end on the specified days every
year.
Summer time is disabled by default. If you specify clock summer-time
zone recurring without parameters, the summer time rules default to the
United States rules.

zone —Specifies the name of the time zone (for example, PDT) to be
displayed when summer time is in effect.

(Optional) week —Specifies the week of the month (1 to 5 or last ).

(Optional) day —Specifies the day of the week (Sunday, Monday...).

(Optional) month —Specifies the month (January, February...).

(Optional) hh : mm —Specifies the time (24-hour format) in hours and
minutes.

(Optional) offset —Specifies the number of minutes to add during
summer time. The default is 60.
3. end Returns to privileged EXEC mode.