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Cisco Personal Assistant

Field Notice: FN - 62667 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Personal Assistant


Revised March 20, 2007

February 13, 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

Personal Assistant - 1.4(x)

1.4(6) and earlier are affected

Problem Description

According to a new policy act, the US Government will extend daylight saving time in the United States starting in March 2007.

The Operating Systems of most Cisco products that support Daylight Savings Time have built in mechanisms to automatically change the times, based on current United States rules. Once the new Act is implemented, the time on devices that maintain time zone information will continue to change according to the old rules, unless changes are made.

Background

On August 8, 2005, President Bush signed into law the Energy Policy Act, which extends Daylight Savings Time (DST) by four weeks from the second Sunday of March to end on the first Sunday of November. This law becomes effective on March 1, 2007.

The Secretary of Energy will report the impact of this change to Congress, and then Congress retains the right to resume the 2005 Daylight Savings Time schedule once the Department of Energy study is complete. This law takes effect March 1, 2007.

Table 1 Summary of changes to Daylight Savings Time

Event

Prior to 2007

2007 and After

Start

First Sunday in April

Second Sunday in March

End

Last Sunday in October

First Sunday in November

The Energy Policy Act of 2005, bill number H.R.6.ENR, can be found at the Library of Congress - Thomas Home website. Search for "Daylight Savings" to find the Act in various stages.

Problem Symptoms

Without the undertaking of the steps described in this notice, the potential problem is that the system time and all timestamps will be incorrect by an hour for three weeks in the spring and one week in the fall for year 2007 and beyond.

This can have a major impact on any event correlation activities that are performed as part of normal operations, troubleshooting, and monitoring.

For example, with security related devices, where logs may be captured, correlated, and stored for future reference, this time change could render them incorrect for situations where they need to be recalled to rebuild a sequence of events. The incorrect timestamps may not be an issue for events that get immediate action, but future reference back to these events would reference incorrect times.

In addition, any device with time based controls and activities, such as authentication servers, synchronization activities, and scheduled events like batch jobs, timed backups, or automated scripts, would be impacted.

If the recommended steps are not applied, Cisco Personal Assistant Rules that use time of day conditions will be off for one hour during the period of time affected by the change in Daylight Savings Time.

Workaround/Solution

To comply with this government mandate, Cisco has begun to take the necessary steps to conform to the new US Daylight Savings Time standard that will begin in March 2007.

The intent of this document is to inform Cisco customers on the plan that Cisco is preparing in order to bring the Unified Communications applications and associated platforms into compliance with this new US government mandate.

Cisco Personal Assistant (PA) uses the same Windows Operating System (OS) build as current Cisco Unified CallManager Windows OS versions. Therefore, the OS fix for PA is the same as the OS fix for Cisco Unified CallManager 4.1(3).

Apply either OS 2000.4.4(sr2) or higher, 2000.4.4a, 2000.4.4a(sr3a)or higher, 2000.4.2sr15 or higher, 2000.4.3a(sr8) or higher, as appropriate to the Personal Assistant server's Operating System. These Windows Operating Systems may be downloaded from the CallManager & Voice Apps Crypto Software Download (registered customers only) web page.

In order to correct Cisco Personal Assistant for the latest Daylight Savings Time changes, three steps are required:

  1. Upgrade to Cisco Personal Assistant 1.4(6)

  2. The Windows OS must be patched with one of the versions mentioned below.

  3. Cisco Personal Assistant needs to be patched with PA1.4.6_DST_Patch.zip by following the instructions in the ReadMe.txt included in the zip file.

Cisco Personal Assistant

PA 1.4(6) has been tested with the latest Cisco IPT OS Daylight Savings Time update and has been confirmed to operate properly. Customers running versions of Personal Assistant prior to PA 1.4(6) are encouraged to upgrade to PA 1.4(6).

Windows Operating System patches:

Standalone OS patch with DST fix was posted to CCO on March 19th which can be used for 2000.2.7, 2000.4.2, 2000.4.3, 2000.4.3a, and 2000.4.4, 2000.4.4a.

The Windows Operating Sytem on the Cisco Personal Assistant servers should be updated using the below file. Follow instructions in the assocaited readme file.

win-OS-Upgrade-K9.2007-DST-Update.1-0-1-readm.html

win-OS-Upgrade-K9.2007-DST-Update.1-0-1.exe

These files may be downloaded from the Unified Communications Manager & Voice Apps Crypto Software Download (registered customers only) page.

Cisco Personal Assistant Daylight Savings Time Patch:

Apply the Cisco Personal Assistant Daylight Savings Time patch. The file name is: PA1.4.6_DST_Patch.zip

This file may be downloaded from the Cisco Personal Assistant Software Download (registered customers only) page. This patch has the Java Runtime Environment fixes needed to correct for the new Daylight Savings Time dates.

Other Applications

In addition to upgrading the Cisco Personal Assistant server's Operating System, associated products, such as Cisco Unity, Cisco Unified CallManager and Microsoft Exchange must also be updated to include Daylight Savings Time fixes.

Cisco Unified IP Phones

Field Notice: FN - 62673 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Unity

Cisco Unified CallManager

Field Notice: FN - 62669 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco CallManager

Microsoft Exchange

See Microsoft's Daylight Saving Time Help and Support Center for procedures and patches.

Also see this Mircosoft article, Exchange Server 5.5 Rides into the Sunset (Exchange 2000 Server, Saddle Up!), for more information on obtaining support for Microsoft Exchange products.

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

CSCsi10827 (registered customers only)

Personal Assistant Time Based Rules Processing broken after 2007 DST

Revision History

Revision

Date

Comment

1.2

20-MAR-2007

Added DDTS CSCsi10827. Added steps to correct Cisco Personal Assistant for the latest Daylight Savings Time changes and patch download link to Workaround/Solution section. Added several headings to Workaround/Solution section.

1.1

09-MAR-2007

Updated Workaround section to note that standalone OS patch with DST fix was posted to CCO on March 6th

1.0

13-FEB-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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