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IP Application Services

U.S. Daylight Saving Time (DST) Changes for 2007 to Present

Document ID: 81675

Updated: Oct 09, 2009

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Introduction

Cisco is proactive in its approach to comply with the new daylight saving time (DST) changes and wants to ensure that Cisco products in our customer's networks continue to operate without impact through the DST date transition. As such, Cisco has undertaken a company-wide initiative to supply documentation that describes how to update each product.

The purpose of this document is to describe the methods that can be used to address the change in daylight saving time, initiated on August 8, 2005, when President George W. Bush signed the Energy Policy Act of 2005. This document helps guide you through the Cisco product lines that require intervention in order to prepare them for the US-DST date changes.

Additional product information will be provided as soon as it is available. Check back frequently for updates.

This Energy Policy Act changes the dates for daylight saving time in the United States. In 2007, DST begins on the second Sunday in March and ends the first Sunday in November. The Secretary of Energy will report the impact of this change to Congress. Congress retains the right to resume the 2005 daylight saving time schedule once the Department of Energy study is complete. This law takes effect March 1, 2007.

Summary of Changes to Daylight Saving Time
  Prior to 2007 Year 2007 and After
Start 1st Sunday in April 2nd Sunday in March
End Last Sunday in October 1st Sunday in November

The operating systems of most Cisco products that support daylight saving time have built in mechanisms to automatically change the times, based on CURRENT United States rules (“recurring” keywords in time zone commands). Once the new Act is implemented, the time on the devices will continue to change according to the OLD rules, unless changes are made.

The configuration changes provided in this document are required to change the “programmed in” dates of daylight saving time for various time zones. Some devices that run newer software may not require this change if the enhancement request is included in the version of software that runs on the device. In software that includes this enhancement, the OLD summertime values have been changed to the NEW summertime values, and the configuration changes in this document are not required. For detailed information about individual products, see Affected Cisco Platforms.

Configuration or OS changes will need to occur on the devices that implement the old rules, so that the device time can be correct, in logs and other time stamped communications from the device/platform.

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Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

Conventions

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Scope and Impact

The DST change affects all devices that support an automatic time change when they are configured to support daylight saving time. This change impacts Cisco and non-Cisco devices. Customers should contact any vendor that uses time-sensitive messaging or other time-stamped communications in order to determine the impact of the Energy Policy Act.

Affected devices that are not changed could display the time exactly 1 hour off from the actual time during DST periods in spring and fall. In 2007, DST starts three weeks earlier and ends one week later than in past years. This change takes effect for the first time in March of 2007. This change can have a major impact on event correlation activities that are performed as part of normal operations troubleshooting and monitoring.

For security-related devices, where logs are 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 might not be an issue for events that get immediate action. However, in the future, these events would reference incorrect times.

Any device with time-based controls and activities, such as a AAA servers, Content Devices (CEs), cron jobs, and video streaming servers can be impacted and should be checked with the appropriate vendor.

Other examples include calls being logged at the wrong times that could effect call detail reporting and billing information or inaccurate campaign dialing times that result in dialing customers outside FTC allotted time periods, which is a violation of FTC regulations.

Consequently, any device with time-based controls and activities, such as authentication servers, synchronization activities, and scheduled events (that is, batch jobs, timed backups, or automated dialing capabilities or scripts, etc.) that has been configured to use U.S. DST rules would be impacted during the time period when the new U.S. DST rules go into effect, but the old U.S. DST rules are still applied.

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Affected Cisco Platforms

The tables in this section list the Cisco enhancement IDs that were created in order to track the changes in the operating system defaults for various platforms. Versions of software that include these enhancements will correctly change the time when configured to observe daylight saving time. Software versions that do not include these enhancements, but support daylight saving time, will use the 2006 dates, which are invalid for 2007.

Refer to these categories for more information about your product:

In order to view each enhancement and the version in which it is integrated, click the appropriate Cisco Tracking ID or use the Bug Tool (registered customers only) . You must register with Cisco.com in order to view this information. For a full list of product Field Notices, refer to the Product Field Notice Summary page.

Note: This page will be updated as more products are addressed.

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Application Networking Services

Cisco Product Cisco Tracking ID Notes
Application and Content Networking System (ACNS) CSCse61326 Fixed in versions 5.5(5) and 3.0(10). Refer to FN - 62677 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Networking Products for more information about this product.
Application Velocity System (AVS) CSCsh58527 Fixed in 5.0.3 only. AVS 6.0 users must downgrade to obtain patch. Refer to FN - 62740 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - For AVS Products for more information about this product.
Content Delivery System TV Streaming Application (CDS-TV) software N/A Fixed in CDS-TV versions 1.4.4.1.3 and 1.5.1.0.0 releases. Cisco TAC is performing patch updates and should be contacted if this has not be completed or is not currently scheduled. Refer to FN - 62742 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Delivery System TV Streaming Application - Patch Update Required for more information about this product.
Content Services Switches (CSS) and Global Site Selector (GSS) Appliances CSCek66308 Refer to this documentation for more information about this product:
Content Switching Module (CSM) N/A Clock obtained from switch.
IP/TV Content Manager N/A Fixed in versions 5.5(5) and 3.0(10). Refer to FN - 62677 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Networking Products for more information about this product.
IP/TV Broadcast Server (BS) and IP/TV Client N/A You must install a Windows patch from Microsoft. Refer to FN - 62677 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Networking Products for more information about this product.
Wide Area Application Services (WAAS) CSCse61335 Fixed in version 4.0(1) and later. Refer to FN - 62677 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Networking Products for more information about this product.
Wide Area File Services (WAFS) N/A Fixed in version 3.0(9) and later. Refer to FN - 62677 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Content Networking Products for more information about this product.

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Interfaces and Modules

Cisco Product Cisco Tracking ID Notes
Cisco Unity Express Network Module (NM-CUE) Network Analysis Module (NM-NAM) Content Engine Network Module (NM-CE) CSCsh30313 Fixed in 1.003 for the underlying operating system. Fixed in 2.3.4 for the module Software. Refer to this documentation for more information about this product:

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Cisco IOS Software

Cisco Product Cisco Tracking ID Notes
7500 Platform Routers CSCsi06651  
Cisco IOS Software Platforms CSCsg70355 Refer to this documentation for more information about this product:
Cisco IOS XR Software CSCse79073 Fixed in version 3.4 and later. See Cisco IOS XR in the Configurations and Workarounds section of this document for more information about this product.

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Network Management

Cisco Product Cisco Tracking ID Notes
Building Broadband Service Manager (BBSM) CSCsh34781 Refer to FN - 62728 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Building Broadband Solution Manager (BBSM) for more information about this product.
CiscoWorks Common Services (CWCS) CSCse85012 CSCsg81641 Customers need to download the patch for CS 3.0 and 2.2.
CiscoWorks LAN Management Solution (LMS) Version 2.2 CSCsg81641 Refer to FN - 62731 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for LMS for more information about this product.
CiscoWorks LAN Management Solution (LMS) Versions 2.5 and 2.6 CSCse85012 CSCsg97823 Download these patches from http://www.cisco.com/cgi-bin/tablebuild.pl/cd-one-3des (registered customers only) :
  • cwdst3_0_0_sol_k9.zip
  • cwdst3_0_0_sol.readme.pdf
  • cwdst3_0_0_win.readme.pdf
  • cwdst3_0_0_win_k9.zip
Download these patches from http://www.cisco.com/cgi-bin/tablebuild.pl/ipm-crypto (registered customers only)
  • ipmdst_2_6_sol.readme.pdf
  • ipmdst_2_6_sol_k9.tar
  • ipmdst_2_6_win.readme.pdf
  • ipmdst_2_6_win_k9.zip
CiscoWorks Network Compliance Manager (NCM) CSCsh34022 Refer to FN - 62750 - U.S. Daylight Savings Time Fix/Patch for CiscoWorks Network Compliance Manager for more information about this product.
CiscoWorks Small Network Management Solution (SNMS) CSCsh45560 Update is required for the current version of SNMS 1.5.1 since it is based of LMS 2.2 with CS 2.2 and RME 3.5.
CiscoWorks Voice Manager (CWVM) N/A No CWVM related patches are required for this. It is recommended that the underlying OS day-light savings time patches are applied. JRE updates will be necessary as well.
Internetwork Performance Monitor (IPM) CSCsg97823  
Intrusion Detection and Prevention N/A See Intrusion Detection and Prevention in the Configurations and Workarounds section of this document for more information about this product.
IP Solution Center (ISC) N/A Refer to FN - 62735 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco IP Solution Center for more information about this product.
License Manager (CLM) N/A Cisco License Manager 1.0 is not affected as long as recommended OS updates are installed.
Mobile Wireless Transport Manager (MWTM) N/A Refer to FN - 62738 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Mobile Wireless Transport Manager for more information about this product.
NetFlow Collection Engine (NFC) CSCsh19473 This will be resolved by a patch of NFC 5.0.3 targeted by end of Feb, 2007.
Network Analysis Module (NAM) CSCsg97421 Fixed in NAM 3.5.1b; targeted for release at the end of February 2007.
Network Connectivity Monitor N/A Refer to FN - 62749 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Network Connectivity Monitor for more information about this product.
Network Registrar (CNR) N/A No impact on CNR. Time is provided by the OS, which may need a patch from the OS vendor.
Performance Visibility Manager (PVM) CSCsh69913 Refer to FN - 62744 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Performance Visibility Manager (PVM) for more information about this product.
QoS Policy Manager (QPM) CSCsh37767 The existing QPM 3.2 customers must install a CMF 2.2 patch. The ETA for this patch is not available as of now. For the QPM 4.0 that is going to be released, a Common Services patch needs to be installed for daylight saving. This patch will be available on the installation CD .
Secure Access Control Server (ACS) CSCsg24465 For the ACS appliance: http://www.cisco.com/cgi-bin/tablebuild.pl/acs-soleng-3des Refer to FN - 62663 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for ACS Windows for more information about this product.
Sheer 3.3 and 3.4 N/A This product requires a patch from Solaris and an update to the JRE. Refer to for more information about this product.
Signaling Gateway Manager (SGM) N/A After updating the underlying operating system, SGM 4.1 customers should download the DST update from the Cisco website. The update should be available before March 1, 2007.
Subscriber Edge Services Manager (SESM) CSCsh84194  
Transport Manager (CTM) CSCsf19864 CSCsf05571 Fixed in JRE 1.4.2_11 for CTM 7.2. Fixed in JRE 1.5.0_06 for CTM 8.0 Windows Patch for Client: http://support.microsoft.com/kb/928388/ leavingcisco.com. Refer to FN - 62671 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Transport Manager for more information about this product.
WAN Manager (CWM) CSCek66783 The server side changes will be taken care by Solaris patch and the client side will be taken care by Windows and JRE patch for the Windows platform.

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Optical Networking

Cisco Product Cisco Tracking ID Notes
ONG Optical Products N/A Refer to FN - 62690 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - ONG Optical Products for more information about this product.
ONS 15000 Series Products CSCsd06997 CSCsg70355 Refer to this documentation for more information about this product:

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Routers and Switches

Cisco Product Cisco Tracking ID Notes
CatOS Platforms CSCse79110 Fixed in versions 6.4(23), 7.6(20), and 8.6. See CatOS Platforms in the Configurations and Workarounds section of this document for more information about this product.

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Security and VPN

Cisco Product Cisco Tracking ID Notes
Adaptive Security Appliances (ASA) Platforms CSCse61225 Fixed in versions 7.0(7), 7.1(3), 7.2(2), 7.3(1). Refer to this documentation for more information about this product:
CiscoWorks CSCse85012 CSCsg81641 JRE Patches 1.4.2_12 and 1.3.1_18.
CiscoWorks Security Information Management Solution (SIMS) N/A Refer to FN - 62720 - U.S. Daylight Savings Time (DST) Changes - for CiscoWorks SIMS for more information about this product.
DDOS Guard and Detector Appliance N/A Refer to FN - 62741 - U.S. Daylight Savings Time (DST) Changes - All DDOS Guard and Detector Appliance Versions - Configuration Change or Upgrade Required for more information about this product.
Firewall Services Module (FWSM) N/A Clock obtained from switch.
Intrusion Prevention System (IPS) CSCsf22526 Refer to FN - 62732 - U.S. Daylight Savings Time (DST) Changes - All IPS Versions - Configuration Validation or Possible Upgrade Required for more information about this product.
NAC Appliance (Cisco Clean Access) CSCsg44268 Fixed in 3.005(011.001), 4.0(3.3), 4.0(4), 4.1(0). Refer to FN - 62729 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - For Cisco Clean Access Products for more information about this product.
PIX Platforms CSCse60554 CSCse61225 Fixed in versions 6.3(5.123), 7.0(6.10), 7.1(2.30), 7.2(1.27), and later. Refer to this documentation for more information about this product:
Secure ACS Appliance N/A Refer to FN - 62660 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for ACS Appliance for more information about this product.
Security Manager (CS-Manager) N/A Refer to FN - 62724 - U.S. Daylight Savings Time (DST) Changes for All Versions of CS-Manager - Patch Required for more information about this product.
Security Monitoring, Analysis and Response System (CS-MARS) N/A Refer to FN - 62721 - U.S. Daylight Savings Time (DST) Changes - CS-MARS for more information about this product.
Video Surveillance Stream Manager (ICEVSSW) CSCsg53859 Refer to FN - 62651 - U.S. Daylight Savings Time Policy Changes Effective March 2007 for ICEVSSW for more information about this product.
VPN 3000 Concentrator CSCse62640 Refer to FN - 62722 - U.S. Daylight Savings Time (DST) Changes - Cisco VPN3000 Concentrators for more information about this product.
VPN/Security Management Solution (VMS) Network Manager N/A Refer to this documentation for more information about this product:

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Storage Networking

Cisco Product Cisco Tracking ID Notes
Storage Switches (SAN-OS) - Storage MDS 9500 Series N/A See Storage Switches (SAN-OS) - Storage MDS 9500 Series in the Configurations and Workarounds section of this document for information about this product.

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Tools and Resources

Cisco Product Cisco Tracking ID Notes
Ciscoworks IP Telephony Monitor (ITM) Version 2.0 CSCsh76600 The patch for this product is available at this URL: http://www.cisco.com/cgi-bin/tablebuild.pl/cd-one-3des OS patch prerequisites:
Unified Operations Manager (CUOM) Versions 1.1 and 2.0 CSCsh62658 The patch for this product is available at this URL: http://www.cisco.com/cgi-bin/tablebuild.pl/cd-one-3des OS patch prerequisites:
Unified Service Monitor (CUSM) Versions 1.1 and 2.0 CSCsh81265 A patch for CUSM 1.1 and 2.0 is available at: http://www.cisco.com/cgi-bin/tablebuild.pl/servmon The workaround for this issue is to restart the system after the new time is updated.

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Video, Cable, and Content Delivery

Cisco Product Cisco Tracking ID Notes
Service Control Engine (SCE) CSCsh24223 CSCsh20257 CSCsh20253 CSCsh20239 Refer to FN - 62641 - SCE - U.S. Daylight Savings Time Policy Changes Effective March 2007 for SCE for more information about this product.

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Voice and Unified Communications

If you run a system of multiple Cisco Unified Communications products, please consult the appropriate System Upgrade Manual for recommended order in which to update products. There is a separate System Upgrade Manual for each version of Unified CallManager that a system is built around.

In order to locate information for system test releases based on Unified CallManager 4.x, System Upgrade Manuals, complete these steps:

  1. Go to http://www.cisco.com/en/US/docs/voice_ip_comm/uc_system/GB_resources/ipcmtrix.htm.

  2. Click the column heading appropriate to the release set that you use. (Note that the system test release version is not the same as the Unified CallManager version.)

  3. Navigate to the link for the System Upgrade Manual.

Note: If you receive an error that states "Unable to open script," disable any anti-intrusion software or Cisco Security Agent that runs on the Cisco Callmanager before you run the DST patch.

In order to locate information for Unified Communications Systems based on Unified CallManager 5.x, System Upgrade Manuals, complete these steps:

  1. Go to http:///www.cisco.com/go/unified-techinfo.

  2. Click the link that corresponds to the system release that you use. (The system release version is usually, but not necessarily, the same as the Unified CallManager version.)

  3. Click the Prepare and Plan tab, and click the Planning Your System Upgrade link located in the Table of Contents on the left side of the page.

Cisco Product Cisco Tracking ID Notes
Broadband Telephony Switch (BTS 10200) CSCsd98165 CSCse41327 CSCse10055 Fixed in 4.5, 4.5(1), 4.5(13), 5.0(0). Refer to these field notices for more information about this product:
Collaboration Server (CCS) - 3.0, 4.0, and 5.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Collaboration Server Dynamic Content Adapter - 2.0(1) N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues.
Computer Telephony Integration Option (Java CIL) - 6.0, 7.0/7.1 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Conference Connection (CCC) N/A Refer to FN - 62691 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Conference Connection (CCC) for more information about this product.
Customer Response Solution (CRS) CSCsh95451 CSCsh38030 CSCsi07661 CSCsi09651 Refer to these field notices for more information about this product:
DPA-7610/7630 CSCsh04492 Refer to FN – 62698 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco DPA-7610/7630 for more information about this product.
E-Mail Manager (CEM) - 3.0, 4.0 and 5.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Emergency Responder (CER) N/A Refer to FN – 62657 – U.S. Daylight Savings Time Policy Changes Effective March 2007 for Cisco Emergency Responder (CER) for more information about this product.
Fax Server N/A Refer to FN - 62752 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Fax Server for more information about this product.
IGX, MGX, and BPX Platforms CSCsg70355 Refer to FN - 62702 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - For MGX, IGX, and BPX Platforms for more information about this product.
Intelligent Contact Management (ICM) Enterprise - 4.x, 5.0, and 6.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Internet Service Node (ISN) - 2.1.0 N/A Refer to these field notices for more information about this product:
Interactive Suite (CIS) CSCsi22179 CSCsh85976 CSCsi10430 CSCsh86008 CSCsh85878 Refer to FN - 62771 - Cisco Interactive Suite (CIS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
IP Communicator (CIPC) N/A Application is dependent on the operating system clock of the client PC and the Cisco Unified CallManager clock. Both the operating system for the client PC and Unified CallManager should be updated to the appropriate software versions. Refer to FN - 62679 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco IP Communicator (CIPC), Cisco Unified Video Advantage (CUVA), Cisco Unified Personal Communicator (CUPC), and Cisco Softphone for more information about this product.
IP Contact Center (IPCC) Enterprise CSCsg26106 Fixed in version 6.0(9) and 7.1(3). Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
IP Contact Center (IPCC) Express N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
IP Contact Center (IPCC) Hosted - 4.x and 5.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
IP Interoperability and Collaboration System (IPICS) CSCsh04370 CSCsh04379 Refer to FN - 62674 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco IPICS for more information about this product.
IP SoftPhone N/A EOE—Function of OS on client PC. Refer to the Microsoft leavingcisco.com website for different OS DST implications. Refer to FN - 62679 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco IP Communicator (CIPC), Cisco Unified Video Advantage (CUVA), Cisco Unified Personal Communicator (CUPC), and Cisco Softphone for more information about this product.
Media Blender (CMB) - 3.0, 4.0, and 5.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Mobility Manager N/A Refer to FN – 62670–Daylight Savings Time policy changes effective March 2007 - for Mobility Manager for more information about this product.
Outbound Option - 6.0, 7.0, and 7.1 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Personal Assistant N/A Refer to FN – 62667 – U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Personal Assistant for more information about this product.
PSTN Gateway (PGW2200) CSCsh37721 Refer to FN - 62687 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco PSTN Gateway (PGW2200) for more information about this product.
Support Tools N/A Refer to these field notices for more information about this product:
Unified Application Environment (CUAE) N/A Refer to FN - 62707 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Unified Application Environment (CUAE) for more information about this product.
Unified Call Services, Universal Edition N/A Refer to 2007 U.S. Daylight Savings Time (DST) Changes and Cisco Unified Call Services, Universal Edition, and Cisco Unified Call Studio, Universal Edition for more information about this product.
Unified Call Studio, Universal Edition N/A Refer to 2007 U.S. Daylight Savings Time (DST) Changes and Cisco Unified Call Services, Universal Edition, and Cisco Unified Call Studio, Universal Edition for more information about this product.
Unified CallManager 14-Button Line Expansion Module N/A Gets time from Unified CallManager.
Unified CallManager Backup and Restore System (BARS) N/A Gets time from operating system.
Unified CallManager BAT N/A This product is a subcomponent of Unified CallManager.
Unified CallManager CAR CSCsh81417 Refer to FN - 62669 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco CallManager for more information about this product.
Unified CallManager DNA N/A This product is a subcomponent of Unified CallManager.
Unified CallManager Express (CCME) N/A Refer to FN - 62686 - U.S. Daylight Saving Time (DST) Policy Changes Effective March 2007 - Cisco CallManager Express (CCME) for more information about this product.
Unified CallManager ITM N/A Require CW2KCommon Services. See CiscoWorks in the Configurations and Workarounds section of this document for more information.
Unified CallManager JTAPI N/A This product is revisioned by the Unified CallManager.
Unified CallManager MLA N/A This product is a subcomponent of Unified CallManager.
Unified CallManager Service (ccm.exe) CSCsf07523 CSCsh39509 CSCsg85605 CSCsh44003 CSCsh81417 CSCsy25150 Options exist to pull information from OS or set within CM. Fixed in CCM versions 4.3(1), 5.0(1), 5.0(4), 5.1(1), 6.0(1), 3.3(5)ES56. For more information, see FN - 62669 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco CallManager. For the most recent information, refer to Spring 2010 DST.
Unified CallManager Telephony Service Provider (TSP) N/A This product is revisioned by the Unified CallManager.
Unified CallManager WinOS Service Release CSCsf07541 2000.4.2SR14, 2000.4.3aSR7, 2000.4.4SR2 and later Refer to FN - 62657 - U.S. Daylight Savings Time Policy Changes Effective March 2007 for Cisco Emergency Responder (CER) for more information about this product.
Unified Contact Center Enterprise and Hosted CSCse96015 CSCsg26106 Refer to these field notices for more information about this product:
Unified Customer Voice Portal (CVP) - 3.x and 4.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Unified Intelligent Contact Management (ICM) ACD CSCse96015 CSCsg26106 Fixed in version 7.1(3), other versions pending. Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Unified Intelligent Contact Management Enterprise and Hosted - 7.0 and 7.1 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.
Unified IP Phones (7900 Series) CSCse47164 Refer to FN - 62666 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Unified IP Phones 7900 Series for more information about this product.
Unified MeetingPlace N/A Refer to FN – 62665 – US Daylight Savings Time Policy Change Effective March 2007 - for MeetingPlace (MP) Products for more information about this product.
Unified MeetingPlace Express CSCsh14773 Refer to FN - 62661 - US Daylight Savings Time Policy Change Effective March 2007 - for MeetingPlace Express (MPE) for more information about this product.
Unified Personal Communicator (CUPC) N/A This application is dependent on the operating system clock of the client PC. The operating system for the client PC should be updated to the appropriate software versions. Refer to FN - 62679 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco IP Communicator (CIPC), Cisco Unified Video Advantage (CUVA), Cisco Unified Personal Communicator (CUPC), and Cisco Softphone for more information about this product.
Unified Presence Server (CUPS) N/A Refer to FN – 62676 – Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Unified Presence Server (CUPS) for more information about this product.
Unified Survivable Remote Site Telephony (SRST) N/A SRST version is a feature set; see Cisco IOS Software Platforms in the Configurations and Workarounds section of this document. Refer to FN - 62717 - U.S. Daylight Saving Time (DST) Policy Changes Effective March 2007 - Cisco Unified Survivable Remote Site Telephony (SRST) for more information about this product.
Unified System Contact Center Enterprise (System IPCC) - 7.0, 7.1 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues.
Unified Video Advantage (CUVA) N/A No update required. CUVA has no dependency on timezones. Refer to FN - 62679 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco IP Communicator (CIPC), Cisco Unified Video Advantage (CUVA), Cisco Unified Personal Communicator (CUPC), and Cisco Softphone for more information about this product.
Unified Video Conferencing (CUVC) CSCsi05728 Refer to FN - 62734 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Unified Video Conferencing (CUVC) Products for more information about this product.
Unified Web and E-Mail Interaction Manager (EIM/WIM) CSCsk08506 Refer to CSCsk08506—EIM/WIM Considerations for 2007 Daylight Savings Time Change for more information about this product.
Unity Connection N/A Refer to FN – 62668 – U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Unity Connection for more information about this product.
Unity Express CSCsh30313 Refer to FN - 62682 - U.S. Daylight Saving Time (DST) Policy Changes Effective March 2007 - for All Cisco Unity Express (CUE) Releases Prior to 2.3.4 for more information about this product.
Unity Voice Mail CSCsh35828 CSCsh35926 CSCsh48829 CSCeg51736 CSCee32525 Refer to this documentation for more information about this product:
VG248 Analog Phone Gateway N/A Time not configured on this product. Gets time from Call Manager. Refer to FN - 62680 - US Daylight Savings Time Policy Change Effective March 2007 - VG248 for more information about this product.
Voice Provisioning Tool (VPT) CSCsf07541 Fixed in versions: 2.0(4.2)SR14, 2.0(4.03a)SR07, 2.0(4.4)SR02. Refer to FN - 62699 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Voice Provisioning Tool for more information about this product.
Web Collaboration Option - 5.0 N/A Refer to FN – 62571 – Cisco Unified Contact Center Enterprise, Cisco Unified Customer Voice Portal (CVP) and Cisco Customer Response Solution (CRS) - Considerations for 2007 Daylight Savings Time Change and PG Time Zone Issues for more information about this product.

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Wireless

Cisco Product Cisco Tracking ID Notes
Aironet 1400 Series N/A Refer to Daylight Saving Time For Cisco Wireless Networking Platforms for more information about this product.
CiscoWorks Wireless LAN Solution Engine (WLSE) CSCsg89013 Enhancement is open; no changes made yet. (1/4/2007)
Location Appliance CSCsg67865 If the Location Appliance is configured to use daylight saving time and is located in the United States, it must run Java Runtime Enviroment (JRE) version 1.4.2_12-b03 or later.
Wireless Control System (WCS) CSCsg12596 Fixed in version 4.0.87 and higher.
Wireless Services Module (WiSM) and WLAN Controller (WLC) CSCsh22276 CSCsc37945 CSCsf99924 Bug removed daylight saving check box in version 4.1 because it did not work correctly.

Refer to FN - 62646 - US Daylight Savings Time Policy Change Effective March 2007 - for Wireless Products for more information about all wireless products.

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Configurations and Workarounds

This section contains workarounds or manual configurations for the more common Cisco platforms that support daylight saving time.

Note: If you apply workarounds, these workarounds might be temporary and might require additional actions before the next DST start or end date transition. Depending on the Cisco device or application, these settings might not be persistently saved. For example, if the Cisco device or application is reset, the DST settings might revert back to the original settings.

Available Configurations
Cisco Platform Workaround Available
Adaptive Security Appliances (ASA) and PIX Platforms Yes
CatOS Platforms Yes
CiscoWorks Patch
Content Services Switch (CSS) Yes
Intrusion Detection and Prevention Yes
Cisco IOS Software Platforms Yes
Cisco IOS XR Yes
ONS 15000 Series Products No—Set manually in March and November
Storage Switches (SAN-OS)—Storage MDS 9500 Series Yes
VPN 3000 Concentrators (Altiga OS) No—Set manually in March and November

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Adaptive Security Appliances (ASA) and PIX Platforms

You can change the DST configuration parameters for a system that runs the Cisco PIX or ASA OS with a single configuration command. You can run this command at any time and on any device in order to change the current default settings of the given device.

clock summer-time zone recurring [{week} {day} {month} {hh:mm}
                             	  {week | day | month | hh:mm} [offset]] 

In order to comply with the 2007 DST time change, use this command on any device that runs the Cisco PIX or ASA OS:

clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00 

Note: If you do not use the summer-time option, you are not affected by this issue. To verify that you do not use the summer-time option, run this command:

Note:  show run | include summer-time

If you do not receive output from this command, your device is not affected by this issue. If you receive output and your device is affected by this issue, contact the Cisco Technical Assistance Center (TAC) in order to obtain the 6.3(5.123) interim image.

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CatOS Platforms

You can change the DST configuration parameters for a system that runs Cisco CatOS release 5.4 and later with a single configuration command. You can run this command at any time and on any device in order to change the current default settings of the given device.

set summertime recurring [{week} {day} {month} {hh:mm} 
                          {week | day | month | hh:mm} [offset]]

In order to comply with the 2007 DST time change, use this command on any device that runs Cisco CatOS release 5.4 and later:

set summertime enable EDT 
set summertime recurring second Sunday March 02:00 first Sunday November 02:00 60 

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CiscoWorks

Management applications, such as CiscoWorks and Cisco Secure ACS, use the time provided by the operating system. Therefore, in order to resolve the DST issue, you must install the operating system patch that contains the fix for your operating system (Windows, Solaris, etc.).

If the platform includes an operating system that is maintained by Cisco, such as Unified CallManager or the ACS appliance, Cisco will provide a patch. See the affected products list in the Network Management section in order to determine when a patch will be available for your product.

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Content Services Switch (CSS)

You can change the DST configuration parameters for a Content Services Switch (CSS) that runs WebNS with a single configuration command. You can run this command at any time in SuperUser mode on a CSS in order to change the current default settings of the given device.

clock summer-time zone recurring [{week} {day} {month} {hh:mm}
	                          {week | day | month | hh:mm} [offset]] 

In order to comply with the 2007 DST time change, use this command on a CSS that runs WebNS:

clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00

Note: The CSS clock summer-time command first appeared in version 7.50.

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Intrusion Detection and Prevention

In order to change the summertime settings on Cisco Intrusion Detection and Prevention devices, use the setup option from the CLI:

Modify summer time settings? [no]:yes
  Recurring, Date or Disable[recurring]:
  Start Month[mar]:
  Start Week[2]:
  Start Day[sun]:
  Start Time[02:00:00]:
  End Month[nov]:
  End Week[1]:
  End Day[sun]:
  End Time[02:00:00]:
  DST Zone[]: EDT
  Offset[60]:

Note: GUI-based management packages might include a time-based setup screen that you can use to make the necessary changes.

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Cisco IOS Software Platforms

You can change the DST configuration parameters for a system that runs Cisco IOS with a single configuration command. You can run this command at any time and on any device in order to change the current default settings of the given device.

clock summer-time zone recurring [{week} {day} {month} {hh:mm} 
                                  {week | day | month | hh:mm} [offset]] 

In order to comply with the 2007 DST time change, use this command on any device that runs Cisco IOS:

clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00

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Cisco IOS XR

You can change the DST configuration parameters for a system that runs Cisco IOS XR with a single configuration command. You can run this command at any time and on any device in order to change the current default settings of the given device.

clock summer-time zone recurring [{week} {day} {month} {hh:mm}
                                  {week | day | month | hh:mm} [offset]] 

In order to comply with the 2007 DST time change, use this command on any Cisco IOS XR device:

clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00 

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Network Time Protocol Implications

Although it might appear that the use of Network Time Protocol (NTP) will avert any issues related to these time changes, NTP and daylight saving time are mutually exclusive and one does not help or hinder the other. The Network Time Protocol is a utility used to synchronize clocks on different devices. Typically, NTP takes a reference clock from a source that is based on the Coordinated Universal Time (UTC), which does not change regardless of DST.

For example, the Eastern Standard Time (EST) in the United States is five hours behind the UTC time when daylight saving time is not active. EST is four hours behind when daylight saving time is active. DST configuration is very specific to the time zone in which the device is deployed, and the NTP UTC is used as a reference when DST is calculated on each individual device.

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ONS 15000 Series Products

Cisco has made changes to the ONS 15600, 15454, 15327, and 15310 products CTC and TL1 software so that the new DST implementation correctly changes with the second Sunday of March and the first Sunday of November in 2007.

Any systems that have not updated the system software will automatically follow the rules set for the previous Daylight Savings Time. In other words, the system automatically modifies the clock and reflects the incorrect time because, on March 11 2007, the system will not automatically presume that the DST has taken effect.

In order to comply with the 2007 DST time change, these options are available:

  • Obtain a new version of your software.

    Cisco has implemented (or is implementing) the new DST changes into this software:

    • Release 4.1.82

    • Release 5.0.8

    • Release 7.0.2 or higher

    • Release 7.2.2 or higher

    • Release 8.0.x or higher

    Other versions of this software will continue to operate with the previous DST rules.

  • Use CTC in order to manually change the time.

    If customers do not want to upgrade to any of the above software releases. CTC provides you with the ability to enable or disable DST and also to change the time on your nodes. Customers must assume manual control over the system time and force the system clock to reflect the correct time.

    From the 2nd Sunday of March to the 1st Sunday of April, use this solution in order to solve the problem:

    • Disable manually Daylight Savings Time on the 2nd Sunday of March (March 11 for 2007).

    • Reset the system clock to reflect the correct time.

    • Enable Daylight Savings Time once again on the 1st Sunday of April 2007 (April 1 for 2007) and ensure that the time is correct.

    From the last Sunday of October to the 1st Sunday of November, use this solution in order to solve the problem:

    • Manually disable Daylight Savings Time on the last Sunday of October (October 28 for 2007).

    • Reset the system clock to reflect the correct time.

    • Enable Daylight Savings Time once again on the 1st Sunday of November 2007 (November 4 for 2007) and ensure that the time is correct.

  • Use the TL1 CLI in order to manually change the time.

    You can change the time-of-day parameters for a system that runs the Optical Operating System (ONS) with a single configuration command. Here is the format of the command:

    SET-TOD:[<TID>]::<CTAG>::<YEAR>,<MONTH>,<DAY>,
         <HOUR>,<MINUTE>,<SECOND>,[<DIFF>][:DST=<DST>];
    

    This command changes the time on an optical product that runs ONS. However, the daylight saving start and stop time will not change, and the product uses the defaults coded into the operational code.

If you do not fall into one of these listed categories, you should direct your inquires to your respective Account Manager.

Note: For more information on time zone configurations and how to reset the time, refer to the relevant procedure guide for the Cisco ONS release that you use. For example, if you use Cisco ONS 15454, refer to Cisco ONS 15454 Procedure Guide, Release 7.0.

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Storage Switches (SAN-OS) - Storage MDS 9500 Series

By default, the MDS SAN-OS does not adjust for daylight saving time, and the software provides no default values for DST settings. Therefore, any configuration for daylight saving must include the parameters for the start and end dates.

clock summer-time zone start_week start_day
	 start_month start_time end_week end_day end_month end_time
	 daylight_offset

In order to comply with the 2007 DST time change, use this command:

clock summer-time Eastern 2 Sun Mar 2:00 1 Sun Nov 2:00

Note: The time zone “Eastern” is a user-defined value and can be determined with this command: show running | clock.

Since the MDS SAN-OS offers no default values for the setting of summertime, no code changes are required. The DST setting for SAN-OS must be configured through the CLI for these reasons:

  • The Fabric Manager cannot be used to configure multiple switches with this setting as it does not support DST configuration.

  • Cisco Fabric Services does not support daylight saving time configuration as a single fabric can span multiple time zones.

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VPN 3000 Concentrators (Altiga OS)

The DST Configuration parameters for a system that runs Altiga OS cannot be changed. Currently, in both the 4.1 and 4.7 releases of Altiga OS, you can enable the summertime feature in order to use daylight saving time default settings, as previously set. In order to work around this issue, you must set the time ahead one hour when the new daylight saving time occurs on the 2nd Sunday in March. DST should be disabled on these devices so the device does not attempt to set ahead its clock on the 1st Sunday in April.

Note: The information provided in this section is a workaround for those who choose not to upgrade to the fixed code once it is available.

You can disable daylight saving time and set the clock forward as shown in this image:

dst_recommendations.gif

Background Information

The bill number for the Energy Policy Act of 2005 is H.R.6.ENR. This section lists the information from the bill that relates to this topic.

SEC. 110. DAYLIGHT SAVINGS.

(a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15 U.S.C.260a(a)) is amended—

(1) by striking 'first Sunday of April' and inserting 'second Sunday of March'; and

(2) by striking 'last Sunday of October' and inserting 'first Sunday of November'.

(b) Effective Date- Subsection (a) shall take effect 1 year after the date of enactment of this Act or March 1, 2007, whichever is later.

(c) Report to Congress- Not later than 9 months after the effective date stated in subsection (b), the Secretary shall report to Congress on the impact of this section on energy consumption in the United States.

(d) Right to Revert- Congress retains the right to revert the Daylight Saving Time back to the 2005 time schedules once the Department study is complete.

For more information on the Energy Policy Act, visit http://thomas.loc.gov leavingcisco.com. (In the Search Bill Text field, enter H.R.6.ENR, select the Bill Number radio button, and click Search. Go to Section 110.)

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Document ID: 81675

Related Information

Updated: Oct 09, 2009
Document ID: 81675