EndRun Sonoma N12, User Manual

Page: 33 / 174

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 configure 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 configuration 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 Configuration 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 configure 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 configured 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 configured 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 reconfigure the NTP subsystem. You may per-
form the configuration from either a
telnet
or
ssh
session 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 Network Interface or Serial Port
The following shows the question and answer configuration utility called
ntpconfig
. The user-
entered responses are shown in a larger font size.
Sonoma_N12 GPS(root@Sonoma_N12:~)-> ntpconfig