EndRun Sonoma D12 - Chapter Four - Precision Time Protocol (PTP;IEEE-1588)

S o n o m a U s e r M a n u a l
17
"Smarter Timing Solutions"
Chapter Three
Network Time Protocol (NTP)
This chapter describes how to congure the Sonoma as an NTP Server. It also includes brief instruc-
tion for setting up NTP Clients on your Unix-like or Windows platform. This manual is not a ‘How-
To’ on installing and using NTP. Only basic approaches to NTP client conguration for operation
with the Sonoma will be described. If you have never used NTP, then you should spend some time
reading the on-line documents, especially the Distribution Notes, FAQ and Conguration subject
matter, which are available at:
http://www.ntp.org
A simple introduction to NTP is here:
http://www.endruntechnologies.com/pdf/NTP-Intro.pdf
Configuring the
NTP Server
Configuring the Sonoma as a Stratum 1 Server
To congure your Sonoma as a Stratum 1 NTP Server you must have successfully completed the
Basic Installation procedures in Chapter 2. By default, the Sonoma is congured to respond to NTP
requests from clients that may or may not be using MD5 authentication. If the clients are using
MD5 authentication, they must be congured properly with the same MD5 authentication keys as
the Sonoma. If you need to modify the factory default Sonoma MD5 keys (recommended) or set
up broadcast/multicast operation, then you will need to recongure the NTP subsystem. You may
perform the conguration from either a telnet or ssh session, the front-panel keypad, or the local
RS-232 console.
NOTE
If you would like to configure your server for multicast operation, configure it as you would for broadcast
operation, with the exception that you must enter this specific NTP IPV4 multicast address: 224.0.1.1, or
this specific IPV6 multicast address ff05::101, when you are prompted to enter the broadcast address.
Configuring NTP Using the Front-Panel Keypad/Display
To congure NTP using the front-panel keypad go to the Main Menu display. Press the RIGHT ar-
row key until the “NTP” selection is highlighted. Press ENTER again. Press the RIGHT arrow key
to highlight “Setup” and press ENTER. From this display you can congure broadcast/multicast
mode. You can also select previously congured MD5 authentication keys from this display. How-
ever, to congure new keys you will need to run ntpconfig (see below).