Daylight Savings Time changes for 2007 (DST2k7)

A law has been passed that changes the start and end dates of Daylight saving time. Beginning in 2007, daylight saving time will begin three weeks earlier, on the second Sunday in March, and be extend by one week to the first Sunday in November. Bluecoat products understand DST and time is changed automatically. Changes must be made to the product code to adhere to the new DST2k7 rules. Below are some details about affected products that Bluecoat supports and release versions that will adhere to DST2k7.

Note: These changes are only for US time zones and not global.

• Identified DST2k7 impacted product(s)
  Blue Coat SG
  Blue Coat AV
  Blue Coat Director
  Blue Coat RA
  NetCache Appliances
  
  
• Expected behavior for impacted product(s).
  If the products are not upgraded with the appropriate code release, the products will adhere to previous DST rules and the clock will be incorrect during the new DST time frame. If upgrading the Proxy SG product is not an option at this time it is possible to manually change the clock. See instructions at the end of this document on how to manually change the clock on the proxy SG.
• Outside technology dependencies where a product may be impacted indirectly by other product(s) that may or may not be within the control of Bluecoat or Network Appliance.
  At this time for Blue Coat products, we do not believe there are any external dependencies. For NetCache products, if you are using Network Appliances Data Fabric Manager for management, you will need to work with Network Appliance to understand the dependency.
• Mitigation strategy for each impacted product.
  
  In order for the Blue Coat and NetCache product to adhere to the new DST2k7 start and end dates, the impacted products must be running at a minimum the following releases or higher:
  
  Blue Coat
  
    SG 3.2.8.2
    SG 4.1.5.2
    SG 4.2.3.12
    SG 5.1.3.15
    AV 2.5.3.2
    Director v5.1.3.4
    Director v4.2.2.2
    RA v2.2.x
  
  NetCache appliances
  
  DST2k7 changes are available in the following OS versions
  NetCache V6.0
  6.0.3P1
  6.0.3P1D1
  6.0.3P1D2
  6.0.3P1D3
  6.0.3P2
  6.0.3P2D1
  6.0.3P2D2
  6.0.3P2D3
  6.0.3P2D4
  6.0.3P2D5
  6.0.3P2D6
  6.0.4
  6.0.4P1
  6.0.4P1D1
  6.0.4P1D2
  6.0.4P1D3
  NetCache v6.1
  6.1RC2

• How to manually change the clock on the Proxy SG using the Management Console.
  
  Management Console> Configuration> General> Clock> Clock.
  
  -De-select Enable NTP.
  The UTC time and date fields become editable when NTP is disabled.
  
  -To set your local time, select a time zone from the Timezone drop-down list.
  
  -Once the local time zone is selected, the event and access logs record the local time instead of GMT.
  
  -Enter the current UTC time and date in the UTC time and date fields.
  
  -Click Apply. The local time displayed will be updated.
  
  
  
• How to manually change the clock on the Proxy SG using the CLI.
  
  -Check current time
  ProxySG#(config)show clock
  2007-03-11 02:00:00+00:00UTC
  2007-03-11 02:00:00+00:00UTC
  
  -To manually adjust the clock NTP must be disabled.
  How to disable NTP to avoid NTP updates adjusting the clock
  ProxySG#(config)ntp disable
  Ok
  
  To adjust clock manually for DST compliance
  ProxySG#(config)clock hour 3
  ok
  ProxySG#(config)show clock
  2007-03-11 03:0:00+00:00UTC
  2007-03-11 03:00:00+00:00UTC