man pages section 1M: System Administration Commands

Exit Print View

Updated: July 2014
 
 

ntptrace (1m)

Name

ntptrace - trace a chain of NTP hosts back to their master time source

Synopsis

/usr/sbin/ntptrace [-n] [-m maxhosts] [server]

Description































































SunOS 5.11                                                      1






System Administration Commands                       ntptrace(1M)



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  argu-
     ments, it starts with  localhost.

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



SunOS 5.11                Last change:                          1






System Administration Commands                       ntptrace(1M)



         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(5)  for  descriptions   of   the   following
     attributes:

     +---------------+---------------------+
     |ATTRIBUTE TYPE |  ATTRIBUTE VALUE    |
     +---------------+---------------------+
     |Availability   | service/network/ntp |
     +---------------+---------------------+
     |Stability      | Volatile            |
     +---------------+---------------------+
SEE ALSO
     ntpq(1M), ntpd(1M), ntpdc(1M), attributes(5))




NOTES
     This   software   was   built   from   source  available  at
     https://java.net/projects/solaris-userland.   The   original
     community    source    was   downloaded   from    http://ar-
     chive.ntp.org/ntp4/ntp-dev/ntp-dev-4.2.7p381.tar.gz

     Further information about this software can be found on  the
     open source community website at http://www.ntp.org/.
























SunOS 5.11                Last change:                          2