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Cisco 7800 Series Media Convergence Servers

Field Notice: FN - 62919 - New Zealand Daylight Saving Time Policy Changes Effective September 2007 - for Media Convergence Server Windows Operating System (MCS OS)


September 4, 2007

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Products Affected

Comments

Windows OS - 2000.4.4a

2000.4.4a and lower

Windows OS - 2000.4.5a

Windows OS - 2003.1.1

Windows OS - 2003.1.2a

 

Problem Description

The operating systems of most Cisco products that support Daylight Saving Time (DST) have built in mechanisms to automatically change the times, based on current user-selected rules. Once the new DST is implemented, the time on devices that maintain time zone information will continue to change according to the old method, unless changes are made.

Impact to Networking Systems

Due to inconsistencies between time zones, New Zealand Daylight Saving Time changes may impact systems events as well as other management systems relating to problem escalation. Local time may be reflected in logs and on phone displays. Therefore, not having accurately represented local time is a very big concern for most organizations. This is especially true of systems that require accurate time and time stamping for proper operation.

Background

On April 30, 2007, the Minister of Internal Affairs issued a statement regarding a change in Daylight Saving Time policy for New Zealand. The change in policy has modified the start and end dates for Daylight Saving Time (DST). Beginning in 2007 and beyond, Daylight Saving Time in New Zealand will start on the last Sunday of September at 2:00 A.M. local time and end on the first Sunday of April at 3:00 A.M. local time.

Specifically for 2007-2008, Daylight Saving Time will begin at 2:00 A.M. local time on September 30, 2007, and end at 3:00 A.M. local time on April 6, 2008.

For more information, see the statement issued by the Minister of Internal Affairs: Daylight saving to be extended.

The old Daylight Saving Time policy dictated that DST started on the first Sunday in October and ended on the third Sunday in March.

Problem Symptoms

As a result, the system clock, any applications or log timestamps will be off by one hour.

Workaround/Solution

Windows Patch:

The Windows 2000 Daylight Saving Time patch is installed if any of these versions of MCS OSs are installed. All nodes are required to be on the same version. This patch affects servers trace files timestamps and the time display on the server's console.

Windows Release

Go to Release

2003.1.2a

2003.1.2a(sr2) or higher

2003.1.1

2003.1.1(sr7) or higher

2000.4.5a

2000.4.5a(sr2) or higher

2000.4.4 or 2000.4.4a

2000.4.4a(sr10) or higher

 

Note:

If you are on a lower Operation System version then what is listed above, please upgrade to one of the versions above.

Operating System Manual Workaround

  1. On the new NZ Daylight Saving Time date, Logon with administrator privileges to Cisco Unified CallManager Windows Server (starting with Publisher)

  2. Click Start, Settings, Control Panel, Date and Time.

  3. Click on Time Zone tab.

  4. Uncheck the Automatically adjust clock for daylight savings changes check box.

  5. Click on Date and Time tab.

  6. Adjust (if needed) the time to the actual time.

  7. Click Apply or OK.

  8. Repeat steps for all servers in the cluster.

Note:

New Zealand

  1. On or before Sunday September 30, uncheck Automatically adjust clock for Daylight Saving changes.

  2. On September 30, 2007, on or after 3:01 A.M, move the clock forward one hour and then on October 7, after 3:01 A.M., check Automatically adjust clock for Daylight Saving changes.

  3. If Operating System has not been updated prior to Sunday March 16, uncheck Automatically adjust clock for Daylight Saving changes prior to that date.

  4. On April 4, after 03:01 A.M move the clock back one hour and after 03:01 A.M occurs again, check Automatically Adjust clock for Daylight Saving changes.

Please note, however, that manually adjusting the clock on Cisco Unified CallManager servers could result in a conflict in time which may produce time synchronization issues. For instance, adjusting the clock during any active call would result in incorrect call duration records. Therefore, adjusting the clock is best to be done when fewest active calls are present.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCsj56317 (registered customers only)

MCS-OS Update needed for New Zealand DST changes in 2007

 

Revision History

Revision

Date

Comment

1.0

04-SEP-2007

Initial Public Release

 

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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