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Cisco Secure Access Control Server for Windows

Field Notice: FN - 62905 - New Zealand Daylight Saving Time Policy Changes Effective September 2007 - For Access Control Server (ACS)


September 21, 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

ACS Solaris - 3.2.3

ACS Solaris - 3.3.4

ACS Solaris - 4.x

ACS Windows - all versions

  

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.

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.

On April 30, 2007, Hon Rick Barker, Minister of Internal Affairs, announced a three week extension to the period of daylight saving. Daylight saving now runs from the last Sunday in September until the first Sunday in April.

Table 1 Summary of changes to Daylight Savings Time, represents New Zealand local time

Event

Prior to 2007

Year 2007 and After

Start

First Sunday in October

2:00 A.M. on September 30, 2007

(Last Sunday in September)

End

Third Sunday in March

3:00 A.M.on April 6, 2008

(First Sunday in April)

  

Problem Symptoms

As a result, the system clock, any applications or log timestamps that ACS writes to will be off by one hour after September 30, 2007.

Workaround/Solution

For ACS for Windows follow the instructions posted at the Microsoft New Zealand 2007 Daylight Saving Changes page.

For ACS Solution Engine (appliance), a patch is required. Download and run the patch from the Cisco Secure Access Control Server Solution Engine Software Download (registered customers only) page. http://www.cisco.com/cgi-bin/tablebuild.pl/acs-soleng-3des

Revision History

Revision

Date

Comment

1.0

21-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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