The Acme Systems shipping office will be closed for holidays from 14 august to 22 august

Network Time Servers (NTP)

This page provides a quick guide to installing Network Time Protocol (NTP) on your Acme board for clock synchronization with an NTP server


Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.

First, you'll need to install NTP from Debian repository using be this command:

apt-get update
apt-get install ntp

/etc/ntp.conf contains the ntp configuration ad is already filled out for you.

An important part are the server lines. You can get a list of NTP server addresses at www.pool.ntp.org, find the preferred ones for your area, and then add them to the file.

Then you'll need to restart or start the NTPD service:

/etc/init.d/ntp restart

Now check the list of server used to syncronize your clock with this command:

ntpq -c peers
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
+vodka.sublink.O 193.204.114.233  2 u    5  256   71   22.862   -3.480   1.927
-212.121.88.250  193.204.114.232  2 u  186  256  377   22.686   -7.755   2.703
+radha.parvati.i 193.204.114.233  2 u  176  256  177   20.278    2.958   2.015
 host22-187-177- .INIT.          16 u    - 1024    0    0.000    0.000   0.000
*golem.canonical 17.253.34.125    2 u    8  256  377   42.582   -3.391   1.657

Related links