Chapter 36: Clock Synchronization Protocol
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 985
Network Time Protocol
Network Time Protocol (NTP) is an internet protocol that provides a reliable way of transmitting and receiving the time
over TCP/IP networks. It is the standard for synchronizing system nodes to Coordinated Universal Time (UTC), which is
accomplished by having these nodes reference a common time source. This can sometimes be an atomic clock, or in the
case of the C4/c CMTS, an NTP server.
Note: The international abbreviation for Coordinated Universal Time is UTC. This abbreviation arose from a desire by the
International Telecommunication Union and the International Astronomical Union to use the same abbreviation in all
languages.
NTP Server Commands
The table below and the paragraphs that follow provide the CLI commands that are used to configure and manage the NTP
server.
For more information on these CLI commands see the Command Line Descriptions.
Table 116. NTP Server and Authentication Commands
Used to configure an NTP unicast client of the remote server
at the specified IP address. The remote server distributes time
sync to the C4/c CMTS, but does not synchronize itself to the
C4/c CMTS.
Use the [no] option to remove the NTP unicast client of the
remote server at the specified IP address.
configure ntp server <ipv4 addr> [burst] [key
<0-65534>] [prefer]
[minpoll <4-11>] [maxpoll <4-11>] [version <2 |
4>] [no]
See also Configure NTP Client (page 986).
Used to display the NTP settings.
show ntp <associations |defaults>
See also Configure NTP Client (page 986).
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