Configuring System Time; Configuring Daylight Savings Time - Alcatel OmniStack LS 6248 User Manual

Configuring System Time

Simple Network Time Protocol (SNTP) allows the switch to set its internal clock
based on periodic updates from a time server (SNTP or NTP). Maintaining an
accurate time on the switch enables the system log to record meaningful dates and
times for event entries. You can also manually set the clock using the CLI. If the
clock is not set and the time cannot be established from a SNTP server, the switch
will only record the time from the factory default set at the last bootup.
When the SNTP client is enabled, the switch periodically sends a request for a time
update to a configured time server. You can configure up to eight time server IP
addresses. The switch attempts to poll each server in the configured sequence.
Polling can be enabled per interface.

Configuring Daylight Savings Time

The Clock Time Zone Page contains fields for defining system time parameters for
both the local hardware clock and the external SNTP clock. If the system time is kept
using an external SNTP clock, and the external SNTP clock fails, the system time
reverts to the local hardware clock. Daylight Savings Time can be enabled on the
device.
The following is a list of Daylight Savings Time start and end times in specific
countries:
• Albania — From the last weekend of March until the last weekend of October.
• Australia — From the end of October until the end of March.
• Australia - Tasmania — From the beginning of October until the end of March.
• Armenia — From the last weekend of March until the last weekend of October.
• Austria — From the last weekend of March until the last weekend of October.
• Bahamas — From April to October, in conjunction with Daylight Savings Time in
the United States.
• Belarus — From the last weekend of March until the last weekend of October.
• Belgium — From the last weekend of March until the last weekend of October.
• Brazil — From the third Sunday in October until the third Saturday in March. During
the period of Daylight Saving Time, Brazilian clocks go forward one hour in most
of the Brazilian southeast.
• Chile — In Easter Island, from March 9 until October 12. In the rest of the country,
from the first Sunday in March or after 9th March.
• China — China does not use Daylight Saving Time.
• Canada — From the first Sunday in April until the last Sunday of October. Daylight
Saving Time is usually regulated by provincial and territorial governments.
Exceptions may exist in certain municipalities.
• Cuba — From the last Sunday of March to the last Sunday of October.
• Cyprus — From the last weekend of March until the last weekend of October.
• Denmark — From the last weekend of March until the last weekend of October.
Configuring System Time
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