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):

        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 5.8           Last change: 19 Mar 1998                    1

Maintenance 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  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