NTPTRACE(1) - phpMan

NTPTRACE(1)                        BSD General Commands Manual                        NTPTRACE(1)

NAME
     ntptrace -- Trace peers of an NTP server

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

DESCRIPTION
     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 off-
     set between that host and the local host (as measured by ntptrace; this is why it is not al-
     ways 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 esti-
     mated error relative to the primary source. These terms are precisely defined in RFC-1305.

OPTIONS
     -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 argu-
             ment.  The default number for this option is:
                  99

             This option has not been fully documented.

     -r string, --host=string
             Single remote host.  The default string for this option is:
                  127.0.0.1

             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 no-
             tice.

EXIT STATUS
     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 auto-
             gen-users AT lists.net.  Thank you.

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

BSD                                        June 23 2020                                       BSD

Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2025-12-08 13:49 @216.73.216.136 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)