broadcast messages go only to the interface associated with the

broadcast messages go only to the interface associated with the

subnet specified, but multicast messages go to all interfaces.

subnet specified, but multicast messages go to all interfaces.

In broadcast mode the local server sends periodic broadcast

In broadcast mode the local server sends periodic broadcast

specified, which is usually the broadcast address on (one of) the

specified, which is usually the broadcast address on (one of) the

local network(s) or a multicast address assigned to NTP.

local network(s) or a multicast address assigned to NTP.

The IANA

The IANA

initial synchronization acquisition with the

initial synchronization acquisition with the

.Ic server

.Ic server

command and s addresses and when

command and s addresses and when

is started

is started

with the

with the

.Fl q

.Fl q

This command enables reception of manycast client messages to

This command enables reception of manycast client messages to

the multicast group address(es) (type m) specified.

the multicast group address(es) (type m) specified.

At least one

At least one

assigned by the IANA should NOT be used, unless specific means are

assigned by the IANA should NOT be used, unless specific means are

taken to limit the span of the reply and avoid a possibly massive

taken to limit the span of the reply and avoid a possibly massive

implosion at the original sender.

implosion at the original sender.

needed to authenticate some remote configuration commands used by

needed to authenticate some remote configuration commands used by

the

the

.Xr ntpdc 8 ,

.Xr ntpdc 8 ,

utilities.

utilities.

The

The

.Pa ntpkey

.Pa ntpkey

integers with values from 1 to 65,534.

integers with values from 1 to 65,534.

.El

.El

.Sh Monitoring Support

.Sh Monitoring Support

includes a comprehensive monitoring facility suitable

includes a comprehensive monitoring facility suitable

for continuous, long term recording of server and client

for continuous, long term recording of server and client

timekeeping performance.

timekeeping performance.

The first two fields show the date (Modified Julian Day) and

The first two fields show the date (Modified Julian Day) and

time (seconds and fraction past UTC midnight).

time (seconds and fraction past UTC midnight).

The next field shows

The next field shows

the last timecode received from the clock in decoded ASCII format,

the last timecode received from the clock in decoded ASCII format,

where meaningful.

where meaningful.

In some clock drivers a good deal of additional

In some clock drivers a good deal of additional

time (seconds and fraction past UTC midnight).

time (seconds and fraction past UTC midnight).

The next two fields

The next two fields

show the remote peer or clock address followed by the local address

show the remote peer or clock address followed by the local address

receive, transmit and final NTP timestamps in order.

receive, transmit and final NTP timestamps in order.

The timestamp

The timestamp

values are as received and before processing by the various data

values are as received and before processing by the various data

of a file set that are currently unused are available for

of a file set that are currently unused are available for

administrational operations without the risk of disturbing the

administrational operations without the risk of disturbing the

operation of

operation of

(Most important: they can be removed to

(Most important: they can be removed to

free space for new data produced.)

free space for new data produced.)

Note that this command can be sent from the

Note that this command can be sent from the

If the

If the

.Cm kod

.Cm kod

flag is set and either service is denied or the client

flag is set and either service is denied or the client

leap bits unsynchronized, stratum zero and the ASCII string "DENY"

leap bits unsynchronized, stratum zero and the ASCII string "DENY"

in the reference source identifier field.

in the reference source identifier field.

If the

If the

.Cm refid

.Cm refid

and

and

.Cm stratum

.Cm stratum

override the defaults for the device.

override the defaults for the device.

There are two optional

There are two optional

device-dependent time offsets and four flags that can be included

device-dependent time offsets and four flags that can be included

support for this routine is detected automatically when the NTP

support for this routine is detected automatically when the NTP

daemon is compiled, so it is not necessary for the user to worry

daemon is compiled, so it is not necessary for the user to worry

about this flag.

about this flag.

can be disabled during kernel development.

can be disabled during kernel development.

The default for this

The default for this

flag is

flag is