diff options
Diffstat (limited to 'contrib/ntp/scripts/ntptrace/ntptrace-opts.def')
| -rw-r--r-- | contrib/ntp/scripts/ntptrace/ntptrace-opts.def | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/contrib/ntp/scripts/ntptrace/ntptrace-opts.def b/contrib/ntp/scripts/ntptrace/ntptrace-opts.def new file mode 100644 index 000000000000..81ddda3b209a --- /dev/null +++ b/contrib/ntp/scripts/ntptrace/ntptrace-opts.def @@ -0,0 +1,69 @@ +/* -*- Mode: Text -*- */ +AutoGen Definitions perlopt; + +//#include copyright.def +#include autogen-version.def + +prog-name = 'ntptrace'; +prog-title = 'Trace peers of an NTP server'; +package = ntp; +#include version.def +argument = '[host]'; + +long-opts; +gnu-usage; + +flag = { + name = numeric; + value = n; + descrip = 'Print IP addresses instead of hostnames'; + doc = <<- _EndOfDoc_ + Output hosts as dotted-quad numeric format rather than converting to + the canonical host names. + _EndOfDoc_; +}; + +flag = { + name = max-hosts; + value = m; + arg-type = number; + arg-default = 99; + descrip = 'Maximum number of peers to trace'; +}; + +flag = { + name = host; + value = r; + arg-type = string; + arg-default = '127.0.0.1'; + descrip = 'Single remote host'; +}; + +doc-section = { + ds-type = 'DESCRIPTION'; + ds-format = 'texi'; + ds-text = <<- _END_PROG_MDOC_DESCRIP +@code{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: + +@example +% 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' +@end example + +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 measured by +@code{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 synchronization distance is the +estimated error relative to the primary source. These terms are precisely +defined in RFC-1305. + _END_PROG_MDOC_DESCRIP; +}; |
