Products Affected |
Comments |
---|---|
CallMgr XML SDK |
Release 2.4(x) |
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.
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 Saving 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) |
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 starting on the last Sunday in September and ending on the first Sunday in October, and again for the third Sunday in March until the first Sunday in April for the year 2007 and beyond.
This can have an impact on any event correlation activities that are performed as part of normal operations, troubleshooting, and monitoring.
For example, for 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, such as batch jobs, timed backups, or automated scripts, would be impacted.
The Cisco Unified Application Environment software does not need updates to correct for the new Daylight Saving Time changes. However, the appropriate patches for Microsoft Windows 2003 must be applied.
Cisco Unified Application Environment release 2.4 uses the same version of Windows 2003 that is used for Cisco Unified Communication Manager. Registered users may obtain Windows 2003 Operating System software from the Unified Communications Manager & Voice Apps Crypto Software Downloads (registered customers only) page.
Download the files:
win-OS-Upgrade-K9.2003-1-2a-sr2.exe
win-OS-Upgrade-K9.2003-1-2a-sr2-Readme.html
Follow the directions in the win-OS-Upgrade-K9.2003-1-2a-sr2-Readme.html file to install the update.
Revision |
Date |
Comment |
---|---|---|
1.0 |
06-SEP-2006 |
Initial Public Release |
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:
Product Alert Tool - Set up a profile to receive email updates about reliability, safety, network security, and end-of-sale issues for the Cisco products you specify.
Unleash the Power of TAC's Virtual Assistance