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)