Can you force local NTP server to be accepted as "suitable"?


 
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Old 06-10-2008
Can you force local NTP server to be accepted as "suitable"?

Is there some way to force the NTP server on a brand-new install to be "suitable" to sync other servers from? (I'm more concerned with synchronization between machines, and less concerned with what the actual time they sync to is)

For example, whenever I install fresh from the Fedora DVDs and try to time-sync between servers (ntpdate -u [IP_of_my_new_system]), I get an error like:
Quote:
no suitable servers found
These machines are not attached to the internet, and I don't want to wait every time (dunno how long is required, but I usually wait an hour or so) for the NTP server to accept itself as valid.
 
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NTPTRACE(8)						    BSD System Manager's Manual 					       NTPTRACE(8)

NAME
ntptrace -- trace a chain of NTP servers back to the primary source SYNOPSIS
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. 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 mea- sured 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 syn- chronization distance is the estimated error relative to the primary source. These terms are precisely defined in RFC-1305. OPTIONS
-d Turns on some debugging output. -n Turns off the printing of host names; instead, host IP addresses are given. This may be useful if a nameserver is down. -r retries Sets the number of retransmission attempts for each host (default = 5). -t timeout Sets the retransmission timeout (in seconds) (default = 2). -v Prints verbose information about the NTP servers. AUTHORS
David L. Mills (mills@udel.edu) BUGS
This program makes no attempt to improve accuracy by doing multiple samples. BSD
March 29, 2000 BSD