Network Time Protocol
Installation and Commissioning Handbook, AutroMaster ISEMS - Integrated Safety and Emergency Management System,
116-P-AMASTER-INSTCOMM/IGB, Rev. C, 2016-05-20, Autronica Fire and Security
Page 54
5. Network Time Protocol
5.1 Introduction
The Network Time Protocol (NTP) is a standard protocol that
synchronizes all real time clocks on computers and other equipment in
a network connection. If an external NTP-server does not exist, one of
the AutroMaster computers can be configured as an NTP-server, and
the other computers in the network can synchronize the clocks with
this computer. When synchonizing with an NTP-server, the real time
clock on the computer must be configured as UTC and show UTC
time.
If no NTP-server is available, one of the AutroMasters in the network
can be configured as the NTP-server, allowing the remaining
AutroMaster ISEMSs to sychronize to this system.
Note: When using Master/Slave network communication in the
AutroMaster system, NTP real time clock synchronization must be
configured.
5.2 Configuring an NTP-server
Open a UNIX-window.
Change the directory to the /etc.-folder.
To configure a computer as an NTP-server, copy the file ntp.master
to the file ntp.conf as superuser.
5.3 Configuring an NTP-client
Open a UNIX-window.
Change the directory to the /etc.-folder.
To configure a computer as an NTP-client, copy the file ntp.slave to
the file ntp.conf.
Open the file ntp.conf in an editor and replace the keyword after
"server" with the hostname or the IP-address of the NTP-server.
If the real time clocks in AutroMaster computers connected in a
network are to be synchronzed against an external NTP-server, all
computers must be defined as NTP-clients.
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