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CiscoWorks VPN/Security Management Solution

Field Notice: FN - 62743 - U.S. Daylight Savings Time (DST) Changes for All Versions of VMS Network Manager - Patch Required


March 8, 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

IDS MC

All operating systems

VMS 2.x

2.0.x SOLARIS

VMS 2.x

2.x WINDOWS

Problem Description

New U.S. Daylight Savings Times rules go into effect in March 2007. Consequently, customers whose network components rely on the default U.S. summertime clock settings within Cisco IOS will be affected by the following problem.

For operating systems that have not been updated with the new U.S. DST policy changes, timestamps will exhibit a one hour time clock offset lasting three weeks beginning at 2:00 A.M. on the second Sunday in March of 2007. They will also exhibit a one hour time clock offset lasting one week beginning at 2:00 A.M. on the first Sunday in November.

Any time-dependent applications not running the upgraded version of software will be affected by this problem.

To comply with the DST change, operating system vendors such as Sun Microsystems and Windows Microsoft released patches for updating their respective OS. Sun Microsystems has released a patch for JRE and JPI.

The Cisco DST patch for VMS will update the JRE and JPI that were shipped with Common Services and VPN Manager This patch will not install patches to the operating System or any system Java runtime environments.

A patch for VMS client systems is packaged within the VMS server patch. Instructions for applying the client patch are also included.

Background

On August 8, 2005, President Bush signed into law the Energy Policy Act, which extends DST by four weeks from the second Sunday of March to the first Sunday of November. The Secretary of Energy will report the impact of this change to Congress, and then Congress retains the right to resume the 2005 DST schedule once the Department of Energy study is complete. This law takes effect on March 1, 2007.

Table 1 - Summary of changes to Daylight Savings Time

Event

Prior to 2007

Year 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. Search for "daylight savings" to find the Act in various stages.

Problem Symptoms

Systems without the DST patch will be incorrect by one hour on the local time setting.

This will affect scheduled tasks, and time of day reporting or time of day display. Potential interactions with other network devices could be offset if the secondary network devices have adjusted for the new daylight savings time window while the local VMS system has not been adjusted.

Workaround/Solution

Customers running VMS version prior to 2.3 should upgrade to version 2.3 using the software and instructions found on CCO at the Software Center (Downloads) - Cisco Works Software - VPN/Security Management Solution (VMS) (registered customers only) page.

Customers running VMS version 2.3 should apply the DST OS patches from Microsoft or Sun depending on the operating system of the platform. After applying the appropriate patches from the OS manufacturer, users should apply the VMS patch from the Latest Application Files - VMS Software Download (registered customers only) page.

Installation instructions are provided at the patch location with filenames shown in the table below:

Table 1 - VMS DST Patch files by Operating System

Operating System

Filename

Description

Solaris

VMS_2_3_DST_Patch_Solaris_K9.tar

Binaries for Solaris Patch

Solaris

VMS_2_3_DST_Patch_Solaris_K9.txt

Instructions for Solaris Patch

Windows

VMS_2_3_DST_Patch_Windows_K9.tar

Binaries for Windows Patch

Windows

VMS_2_3_DST_Patch_Windows_K9.txt

Instructions for Windows Patch

To order or purchase the upgrade software, contact your local Product Sales Specialist or use your active Service Application Support (SAS) contract to request shipping of the upgrade software via the CCO Product Upgrade Tool (registered customers only) . If further assistance is needed, please contact the Cisco Technical Assistance Center (TAC).

Revision History

Revision

Date

Comment

1.0

08-MAR-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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