Updated: 2021/Apr/14

NTPTRACE(8)             System Manager's Manual (user)             NTPTRACE(8)

     ntptrace - Trace peers of an NTP server

     ntptrace [-flags] [-flag [value]] [--option-name[[=| ]value]] [host]

     ntptrace is a perl script that uses the ntpq utility program to follow
     the chain of NTP servers from a given host back to the primary time
     source. For ntptrace to work properly, each of these servers must
     implement the NTP Control and Monitoring Protocol specified in RFC 1305
     and enable NTP Mode 6 packets.

     If given no arguments, ntptrace starts with localhost. Here is an example
     of the output from ntptrace:

           % ntptrace localhost: stratum 4, offset 0.0019529, synch distance 0.144135
           server2ozo.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): the host name, the host
     stratum, the time offset between that host and the local host (as
     measured by ntptrace; this is why it is not always zero for "localhost"),
     the host synchronization distance, and (only for stratum-1 servers) the
     reference clock ID. All times are given in seconds. Note that the stratum
     is the server hop count to the primary source, while the synchronization
     distance is the estimated error relative to the primary source. These
     terms are precisely defined in RFC-1305.

     -n, --numeric
             Print IP addresses instead of hostnames.

             Output hosts as dotted-quad numeric format rather than converting
             to the canonical host names.

     -m number, --max-hosts=number
             Maximum number of peers to trace.  This option takes an integer
             number as its argument.  The default number for this option is:

             This option has not been fully documented.

     -r string, --host=string
             Single remote host.  The default string for this option is:

             This option has not been fully documented.

     -?, --help
             Display usage information and exit.

     -!, --more-help
             Pass the extended usage information through a pager.

     -v [{v|c|n --version [{v|c|n}]}]
             Output version of program and exit.  The default mode is `v', a
             simple version.  The `c' mode will print copyright information
             and `n' will print the full copyright notice.

     One of the following exit values will be returned:

     0  (EXIT_SUCCESS)
             Successful program execution.

     1  (EXIT_FAILURE)
             The operation failed or the command syntax was not valid.

     70  (EX_SOFTWARE)
             libopts had an internal operational error.  Please report it to
             autogen-users@lists.sourceforge.net.  Thank you.

     This manual page was AutoGen-erated from the ntptrace option definitions.

NetBSD 9.99                      March 3 2020                      NetBSD 9.99