ntptrace

 

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 Maintenance Commands                                 ntptrace(1M)
 
 
 


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


SYNOPSIS
      /usr/sbin/ntptrace [ -vdn ]  [ -r retries ]  [ -t timeout  ]
      [ server ]
 


DESCRIPTION
      ntptrace determines where  a  given  Network  Time  Protocol
      (NTP)  server  gets  its time from, and follows the chain of
      NTP servers back to their master time source.  If  given  no
      arguments, it starts with  localhost.
 


OPTIONS
      -d    Turns on some debugging output.
 
      -n    Turns off the printing of host names; instead, host IP
            addresses  are  given.   This  may  be  necessary if a
            nameserver is down.
 
      -r retries
            Sets the number of retransmission  attempts  for  each
            host.
 
      -t timeout
            Sets the retransmission timeout (in seconds);  default
            = 2.
 
      -v    Prints verbose information about the  NTP servers.
 
 EXAMPLES
      Example 1: A sample output of ntptrace.
 
      Here is an example of the output from ntptrace:
 
      % 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):
 
         +  The server's host name
 
         +  The server's stratum
 
         +  The time offset between that server and the local host
            (as measured by ntptrace; this is why it is not always
            zero for  localhost)
 
         +  The host's synchronization distance
 
 
 
 SunOS 5.8           Last change: 19 Mar 1998                    1
 
 
 
 
 
 
 Maintenance Commands                                 ntptrace(1M)
 
 
 
         +  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  attri-
      butes:
 
      ____________________________________________________________
     |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
     |_____________________________|_____________________________|
     | Availability                | SUNWntpu                    |
     |_____________________________|_____________________________|
 
 


SEE ALSO
      xntpd(1M), attributes(5)
 
 BUGS
      This program makes no attempt to improve accuracy  by  doing
      multiple samples.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8           Last change: 19 Mar 1998                    2
 
 
 

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