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Managing System Files Setting the System Clock
OmniSwitch 6600 Family Switch Management Guide March 2005 page 2-35
Setting the System Clock
The switch clock displays time using a 24 hour clock format. It can also be set for use in any time zone.
Daylight Savings Time (DST) is supported for a number of standard time zones. DST parameters can be
programmed to support non-standard time zones and time off-set applications.
All switch files and directories listed in the flash directory bear a time stamp. This feature is useful for file
management purposes.
Setting Date and Time
You can set the local date, time zone, and time for your switch or you can also set the switch to run on
Universal Time Coordinate (UTC or GMT). If applicable, you can also configure Daylight Savings Time
(DST or Summertime) parameters.
Note. If your switch has two CMMs for redundancy, you must set the date and time on both the primary
and the secondary CMM. Otherwise, if you experience a fail-over situation, the backup CMM’s time and
date will not match. You can use the takeover command to switch between CMMs to set time and date.
For more information on redundancy, refer to Chapter 4, “Managing CMM Directory Content.”
Date
To display the current system date for your switch, use the system date command. If you do not specify a
new date in the command line, the switch will display the current system date.
To modify the switch’s current system date, enter the new date with the command syntax. The following
command will set the switch’s system date to June 23, 2002.
-> system date 06/23/2002
When you specify the date you must use the mm/dd/yyyy syntax where mm is the month, dd is the day and
yyyy is the year. Months are specified as numbers from 01 to 12. Days are specified as numbers from 1 to
31. You must use two digits to define the month and the day. You must use four digits to specify the year.
Time Zone
To determine the current time zone or to specify a new time zone for your switch, use the system
timezone command. This specifies the time zone for the switch and sets the system clock to run on UTC
time (or Greenwich Mean Time). The following displays for the Pacific standard time zone.
-> system timezone
PST: (Coordinated Universal Time) UTC-8 hours
To set a new time zone for the system clock, use the system timezone command along with the appropri-
ate time zone abbreviation. Refer to the table in “Enabling DST” on page 2-38 for time zone abbrevia-
tions. The following command sets the system clock to run on Pacific standard time.
-> system timezone pst
PST: (Coordinated Universal Time) UTC-8 hours