Masterclock NTD200 Series User Manual – v1 – January 2014
16
NTP Addressing Modes
Setting up to receive NTP is
relatively easy to do once you
known what you want.
UNICAST (QUERY)
NTPS clocks and devices support the
Unicast Method
of
NTP (Network
Time Protocol)
packets transfer. The
unicast method involves direct
transfer of requested information
from the NTP server to the NTP
client (clock or other device) based
on an automatically generated
electronic query or NTP time
request. The Unicast method is
supported simultaneously when
either the Broadcast or Multicast
modes are selected.
UDP (User Datagram Protocol) Broadcasts
Some firewalls and routers will not forward
UDP broadcasts by default. Security
configurations may need to be adjusted to
allow the UDP broadcast packets to pass
on the configured port.
