There are three types of time sources that must be understood before you set up
the Time Service for your computer running Windows NT.
Top Level Time Source
---------------------
The top level time source represents an accurate time sourcesuch as an atomic
clock. The Time Service Initialization file, Timeserv.ini, lists many different
sources for accurate clocks, that is, NISTACTS, USNO, NTP, and so forth.
Primary Source (Masters of Time)
--------------------------------
These computers get their time from a top level time source and are primary time
sources for the other computers on your Local Area Network (LAN). The Type= line
of the Timeserv.ini file should be set to one of the top level time sources in
order tobe considered a primary time source. You can have as many Primary
Sources (Masters of Time) as you want on your network, but it is usually
sufficient to just have one.
Type=USNO
Secondary Source
----------------
These computers have their Type= line set to Primary and the PrimarySource= line
set to one (or more) of the primary sources separated by a semicolon.
Type=Primary
PrimarySource=\\NTPDC1;\\NTPDC2...
The secondary sources must have their TimeSource=line set to YES. Setting the
TimeSource=YES actually sets the timesource bit to true that allows down-level
clients to determine who the secondary time sources are. Secondary clients issue
a NetRemoteTOD API call to the primary source to get their time set.
TimeSource=YES
