ntptrace - trace a chain of NTP hosts back to their master time source
/usr/sbin/ntptrace [-n] [-m maxhosts] [server]
System Administration Commands ntptrace(8)
NAME
ntptrace - trace a chain of NTP hosts back to their master time source
SYNOPSIS
/usr/sbin/ntptrace [-n] [-m maxhosts] [server]
DESCRIPTION
ntptrace determines from where a given Network Time Protocol (NTP)
server gets its time, and follows the chain of NTP servers back to
their master time source. If given no arguments, it starts with local-
host.
OPTIONS
The following options are supported:
-n Turns off the printing of host names; instead, host IP
addresses are given.
-m maxhosts Sets the maximum number of levels up the chain that will
be followed.
EXAMPLES
Example 1 Sample Output From the ntptrace Command
The following example shows the output from the ntptrace command:
% ntptrace
localhost: stratum 4, offset 0.0019529, synch distance 0.144135
server2.bozo.com: stratum 2, offset 0.0124263, synch distance 0.115784
usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB'
On each line, the fields are (left to right):
o The server's host name
o The server's stratum
o The time offset between that server and the local host (as
measured by ntptrace; this is why it is not always zero for
localhost)
o The host's synchronization distance
o The reference clock ID (only for stratum-1 servers)
All times are given in seconds. Synchronization distance is a measure
of the goodness of the clock's time.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+---------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+---------------------+
|Availability | service/network/ntp |
+---------------+---------------------+
|Stability | Volatile |
+---------------+---------------------+
SEE ALSO
ntpq(8), ntpd(8), attributes(7))
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from http://ar-
chive.ntp.org/ntp4/ntp-4.2/ntp-4.2.8p15.tar.gz.
Further information about this software can be found on the open source
community website at http://www.ntp.org/.
ntptrace(8)