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Cisco ASA 5500-X Series Next-Generation Firewalls

Field Notice: FN - 62706 - U.S. Daylight Savings Time (DST) Changes - for PIX Firewall and Adaptive Security Appliances (ASA) Product Families


February 19, 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

Cisco Adaptive Security Appliances

Cisco PIX Firewalls

Problem Description

If the *PIX/ASA product is located in the U.S. and the product has been configured for the Daylight Savings Time using the clock summer-time command, then the PIX/ASA product will require user intervention in order to prepare for the US-DST date change. If the setting is not manually changed, the system will display incorrect local time when the new Daylight Savings Time starts on March 11, 2007.

If logging is enabled when Daylight Savings Time is configured on the product, see logging related information in the Release Note of the DDTS CSCse60554 and CSCse61225.

If Daylight Savings Time is not configured, then this Daylight Savings Time policy change has no effect on your PIX and ASA.

*Affects all PIX running 6.x versions prior to 006.003(005.123)

Affects all PIX/ASA running 7.0.x versions prior to 007.000 0006.010)

Affects all PIX/ASA running 7.1.x versions prior to 007.001(002.030)

Affects all PIX/ASA running 7.2.1.x versions prior to 007.002(001.027)

Background

This Energy Policy Act changes the dates for Daylight Savings Time in the United States. In 2007, DST begins on the second Sunday in March and ends the first Sunday in November. This law takes effect March 1, 2007. The new Daylight Savings Time starts March 11, 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

Problem Symptoms

The PIX and ASA will display incorrect local time when the new Daylight Savings Time starts if the summer time clock setting is not manually changed. If logging is enabled when Daylight Savings Time is configured on the product, see logging related information in the Release Note of the DDTS CSCse60554 and CSCse61225.

If Daylight Savings Time is not configured using the clock summer-time command, this Daylight Savings Time policy change has no effect on your PIX/ASA product.

Workaround/Solution

The clock summertime command can be used to change the start and the end dates of the Daylight Savings Time on the system.

The new start and end dates can be entered using the clock summer-time command.

Example:

For the Pacific time zone, the command is:

clock summer-time PDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00 60

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

CSCse60554 (registered customers only)

Support daylight savings changes in Energy Policy Act of 2005 for PIX software version 6.x.

CSCse61225 (registered customers only)

Support daylight savings changes in Energy Policy Act of 2005 for PIX and ASA software verion 7.x

Revision History

Revision

Date

Comment

1.0

19-FEB-2007

Initial Public Release

For More Information

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