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Managing System Files Setting the System Clock

OmniSwitch 6250/6450 Switch Management Guide May 2012 page 1-39

Setting the System Clock

The switch clock displays time by 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 you have multiple switches in a stack, you must set the date and time on both the primary and the

secondary switch. Otherwise, if you experience a fail-over situation, the secondary switch time and date

will not match. You can use the takeover command to switch between primary and secondary switches to

set time and date. For more information on redundancy, refer to Chapter 5, “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 current system date, enter the new date with the command syntax. The following

command will set the switch 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 is displayed 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 1-42 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

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Alcatel OmniSwitch/Router Betriebsanweisung Seite 59