Lines Matching +full:clock +full:- +full:duration +full:- +full:ns
1 /* -*- Mode: Text -*- */
7 // We want the synopsis to be "/etc/ntp.conf" but we need the prog-name
8 // to be ntp.conf - the latter is also how autogen produces the output
10 prog-name = "ntp.conf";
11 file-path = "/etc/ntp.conf";
12 prog-title = "Network Time Protocol daemon (ntpd) configuration format";
15 explain = <<- _END_EXPLAIN
18 doc-section = {
19 ds-type = 'DESCRIPTION';
20 ds-format = 'mdoc';
21 ds-text = <<- _END_PROG_MDOC_DESCRIP
48 host addresses written in numeric, dotted-quad form,
64 .Bl -bullet -offset indent
74 .Sx Reference Clock Support
98 clock, and auxiliary commands that specify environmental variables
106 class D), or (r) a reference clock address (127.127.x.x).
113 If the Basic Socket Interface Extensions for IPv6 (RFC-2553)
129 with the exception of reference clock addresses,
141 .Bl -tag -width indent
194 either a DNS name or an IP address in dotted-quad notation.
201 .Bl -tag -width indent
205 In this mode the local clock can synchronized to the
207 the local clock.
211 radio clock.
212 In this mode the local clock can synchronized to the
214 the local clock.
221 persistent symmetric-active mode association with the specified
223 In this mode the local clock can be synchronized to
225 clock.
292 .Bl -tag -width indent
362 It specifies the time-to-live
375 Versions 1-4 are the choices, with version 4 the
392 .Bl -tag -width indent
403 server and client should operate using symmetric-key or public-key
416 and client should operate using symmetric-key or public-key
429 both the server and client should operate using symmetric-key or
430 public-key authentication as described in
452 specification RFC-1305 defines a scheme which provides
457 DES-CBC.
459 5 (MD5) algorithm using a private key, commonly called keyed-MD5.
460 Either algorithm computes a message digest, or one-way hash, which
581 .Ss Symmetric-Key Cryptography
582 The original RFC-1305 specification allows any one of possibly
583 65,535 keys, each distinguished by a 32-bit key identifier, to
631 described in RFC-1305 and in addition the Autokey protocol,
659 All modes use in addition a variant of the S-KEY scheme,
660 in which a pseudo-random key list is generated and used
670 .Xr ntp-keygen 1ntpkeygenmdoc
800 Bob sends Cathy a thing called a crypto-NAK, which tells her
824 .Xr ntp-keygen 1ntpkeygenmdoc
857 .Bl -tag -width indent
872 protocol defined in RFC-1305.
903 .Bl -tag -width indent
907 .Pa ntpkey_cert_ Ns Ar hostname
913 .Pa ntpkey_gq_ Ns Ar hostname
919 .Pa ntpkey_key_ Ns Ar hostname
924 .Pa ntpkey_iff_ Ns Ar hostname
934 .Pa ntpkey_mv_ Ns Ar hostname
974 Specifies the interval between re-randomization of certain
978 deflect brute-force attacks on the algorithms of the scheme;
998 arguments are 32-bit unsigned
1004 .Bl -tag -width indent
1011 This could be due to a replay or a server clock time step.
1074 .Bl -tag -width indent
1080 .Bl -tag -width indent
1082 Enables recording of clock driver statistics information.
1084 received from a clock driver appends a line of the following form to
1087 .Bd -literal
1094 clock address in dotted-quad notation.
1096 timecode received from the clock in decoded ASCII format, where
1098 In some clock drivers a good deal of additional information
1101 clock for further details.
1109 .Bd -literal
1116 address in dotted-quad notation, The final message field includes the
1124 update of the local clock outputs a line of the following form to
1127 .Bd -literal
1134 show time offset (seconds), frequency offset (parts per million -
1135 PPM), RMS jitter (seconds), Allan deviation (PPM) and clock
1146 .Bd -literal
1147 48773 10847.650 127.127.4.1 9714 -0.001605376 0.000000000 0.001424877 0.000958674
1153 show the peer address in dotted-quad notation and status,
1160 Enables recording of raw-timestamp statistics information.
1165 received from a peer or clock driver appends a line of the
1168 .Bd -literal
1175 show the remote peer or clock address followed by the local address
1176 in dotted-quad notation.
1188 .Bd -literal
1197 .Bl -tag -width indent
1253 .Bl -tag -width indent
1266 .Bl -tag -width indent
1274 server, usually specified as a compile-time constant.
1308 .Bl -tag -width indent
1340 is a 4-digit year number (e.g., 1992).
1348 .Ar filename Ns .19921210 .
1352 The term week is defined by computing day-of-year
1356 filename base: A dot, a 4-digit year number, the letter
1358 and a 2-digit week number.
1361 .No . Ns Ar 1992W1 .
1365 file name suffix consists of a dot, a 4-digit year number, and
1366 a 2-digit month.
1377 and an 8-digit number.
1379 running at the start of the corresponding 24-hour period.
1461 .Ss The Kiss-of-Death Packet
1469 for this purpose called the "kiss-of-death" (KoD) packet.
1471 to zero and the reference identifier field set to a four-byte
1497 .Bl -tag -width indent
1515 and a kiss-o'-death packet returned if enabled.
1565 where a value of -1 means "unlimited", the current default.
1580 restrict informational queries and attempts to do run-time
1584 .Bl -tag -width indent
1592 If this flag is set when a rate violation occurs, a kiss-o'-death
1631 to become the default in ntp-4.4.
1719 Remove a previously-set restriction. This is useful for
1746 with the anycast paradigm described in RFC-1546,
1778 and minimum feasible time-to-live (TTL) hops, depending
1805 in burst mode in order to reliably set the host clock
1808 in a volley of eight client/server at 2-s intervals
1821 and the effects of implosion due to near-simultaneous
1861 survivors in order to synchronize the clock.
1989 re-associate accordingly.
2008 the rascals, sets the clock and then departs.
2043 .Bl -tag -width indent
2063 .Bl -tag -width indent
2073 This command affects the clock selection and clustering
2076 quantity of peers used to synchronize the system clock
2080 .Bl -tag -width indent
2115 to the clock selection algorithm in order to produce
2117 If fewer than this number are available, the clock is
2131 in an expanding-ring search.
2135 .Sh Reference Clock Support
2137 satellite and modem reference clocks plus a special pseudo-clock
2138 used for backup or when no other clock source is available.
2141 .Qq Reference Clock Drivers
2148 .Qq Debugging Hints for Reference Clock Drivers
2150 .Qq How To Write a Reference Clock Driver
2157 .Qq Pulse-per-second (PPS) Signal Interfacing
2173 A reference clock will generally (though not always) be a radio
2180 device driver specific to each reference clock must be selected and
2184 configure a reference clock when the driver has not been compiled
2197 Reference clock addresses are of the form
2204 denoting the clock type and
2207 number in the range 0-3.
2215 clock, where the
2218 is the clock address.
2224 options are not used for reference clock support.
2227 option is added for reference clock support, as
2232 persuade the server to cherish a reference clock with somewhat more
2246 meaning only for selected clock drivers.
2247 See the individual clock
2253 information for individual clock drivers and normally follows
2259 argument specifies the clock address.
2267 device-dependent time offsets and four flags that can be included
2272 The stratum number of a reference clock is by default zero.
2279 specify the reference clock stratum as greater than zero.
2284 involving both a reference clock and a pulse-per-second (PPS)
2285 discipline signal, it is useful to specify the reference clock
2291 these options apply to all clock drivers.
2292 .Ss Reference Clock Commands
2293 .Bl -tag -width indent
2306 .Bl -tag -width indent
2308 Marks the reference clock as preferred.
2321 device-specific fashion.
2329 for reference clock messages, as a power of 2 in seconds
2368 .Bl -tag -width indent
2371 the driver, a fixed-point decimal number in seconds.
2374 particular clock to agree with an external standard, such as a
2386 radio clock or PPS signal is supported, a special calibration
2393 .Qq Reference Clock Drivers
2399 Specifies a fixed-point decimal number in seconds, which is
2400 interpreted in a driver-dependent way.
2403 .Qq Reference Clock Drivers
2421 device-specific fashion.
2430 These four flags are used for customizing the clock driver.
2433 is a function of the particular clock driver.
2450 .Bl -tag -width indent
2468 record the frequency of the local clock oscillator.
2484 in parts-per-million (PPM).
2495 a 6-bit code.
2523 .Bl -tag -width indent
2551 Enables processing of NTP mode 7 implementation-specific requests
2585 receives a crypto-NAK packet that
2590 a properly forged and appropriately delivered crypto-NAK packet
2633 receives a crypto-NAK packet that
2638 a properly forged and appropriately delivered crypto-NAK packet
2718 .Fl -interface ,
2721 .Fl -novirtualips
2722 command-line options are specified in the configuration file,
2733 .Li https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list
2735 .Li ftp://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list .
2750 .Xr update-leap 1update_leapmdoc
2758 .Cm --enable-leap-smear
2765 .Sy DO NOT USE THIS OPTION ON PUBLIC-ACCESS SERVERS!
2781 .Ql - ,
2789 .Ql -
2796 .Cm clock ,
2833 .Bd -literal
2842 .Bd -literal
2846 This configuration will list all clock information and
2870 .Bl -tag -width indent
2919 (frequency file) will be written, with a default value of 1e-7 (0.1 PPM).
2931 or the JJY driver (type 40, mode 100 - 180).
2935 For the JJY driver (type 40 mode 100 - 180), the argument is
2953 A poll interval is 2^n seconds in duration,
2958 The next two numbers must be between 0 and one-half of the poll interval,
3002 .Bl -tag -width indent
3010 The default is 32 megabytes on non-Linux machines, and -1 under Linux.
3011 -1 means "do not lock the process into memory".
3039 .Cm config-from-file
3056 .Cm saveconfig\ ntp-%Y%m%d-%H%M%S.conf .
3097 holds the names of the reference clock variables.
3133 .Bl -tag -width indent
3136 intercept, which is a parameter of the PLL/FLL clock discipline
3145 parts-per-million.
3150 huff-n'-puff filter span, which determines the most recent interval
3160 the panic sanity check is disabled and a clock offset of any value will
3222 mode these values are used in-turn in an expanding-ring search.
3235 an expanding-ring search.
3242 doc-section = {
3243 ds-type = 'FILES';
3244 ds-format = 'mdoc';
3245 ds-text = <<- _END_MDOC_FILES
3246 .Bl -tag -width /etc/ntp.drift -compact
3253 .It Pa ntpkey_ Ns Ar host
3256 Diffie-Hellman agreement parameters
3261 doc-section = {
3262 ds-type = 'SEE ALSO';
3263 ds-format = 'mdoc';
3264 ds-text = <<- _END_MDOC_SEE_ALSO
3283 doc-section = {
3284 ds-type = 'BUGS';
3285 ds-format = 'mdoc';
3286 ds-text = <<- _END_MDOC_BUGS
3292 .Pa ntpkey_ Ns Ar host
3300 doc-section = {
3301 ds-type = 'NOTES';
3302 ds-format = 'mdoc';
3303 ds-text = <<- _END_MDOC_NOTES