RUGGEDCOM ROS
User Guide
Chapter 5
Setup and Configuration
Managing NTP
195
Parameter
Description
This setting allows for the conversion of UTC (Universal
Coordinated Time) to local time.
DST Offset
Synopsis:
HH:MM:SS
Default:
00:00:00
This parameter specifies the amount of time to be shifted
forward/backward when DST begins and ends. For example for
most part of USA and Canada, DST time shift is 1 hour (01:00:00)
forward when DST begins and 1 hour backward when DST ends.
DST Rule
Synopsis:
mm.n.d/HH:MM:SS mm.n.d/HH:MM:SS
This parameter specifies a rule for time and date when the
transition between Standard and Daylight Saving Time occurs.
• mm - Month of the year (01 - January, 12 - December)
• n - nth d-day in the month (1 - 1st d-day, 5 - 5th/last d-day)
• d - day of the week (0 - Sunday, 6 - Saturday)
• HH - hour of the day (0 - 24)
• MM - minute of the hour (0 - 59)
• SS - second of the minute (0 - 59)
Example: The following rule applies in most part of USA and
Canada:
03.2.0/02:00:00 11.1.0/02:00:00
DST begins on March's 2nd Sunday at 2:00am.
DST ends on November's 1st Sunday at 2:00am.
Section 5.5.2
Managing NTP
RUGGEDCOM ROS may be configured to refer periodically to a specified NTP server to correct any accumulated
drift in the on-board clock. RUGGEDCOM ROS will also serve time via the Simple Network Time Protocol (SNTP) to
hosts that request it.
Two NTP servers (primary and backup) may be configured for the device. The primary server is contacted first for
each attempt to update the system time. If the primary server fails to respond, the backup server is contacted. If
either the primary or backup server fails to respond, an alarm is raised.
CONTENTS
•
Section 5.5.2.1, “Enabling/Disabling NTP Service”
•
Section 5.5.2.2, “Configuring NTP Servers”
Section 5.5.2.1
Enabling/Disabling NTP Service
To enable or disable NTP Service, do the following:
