Chapter 10 Clock And Clock Synchronization; Ntp Configuration; Ntp Overview; Figure 10-1 Ntp Client Work Flow - Zte ZXR10 ZSR V2 Configuration Manual (System Management

Chapter 10
Clock and Clock
Synchronization
Table of Contents

NTP Configuration....................................................................................................10-1

Physical POS Interface Clock Configuratio ...............................................................10-6
10.1 NTP Configuration

10.1.1 NTP Overview

NTP Introduction
In network application, the clocks of network members need to be synchronized. There is
normally one or more minute discrepancy of clocks between systems. For a large-scale
network, system administrator can not modify the system clocks manually one by one.
Network Time Protocol (NTP) is a time synchronization protocol applied to different network
members. The NTP devices synchronize their clock by exchanging NTP packets, thus to
keep their clocks consistent.
NTP Client
Figure 10-1

Figure 10-1 NTP Client Work Flow

1. The client sends NTP time request packets to the configured clock server regularly
and waits responses.
2. After receiving NTP response packet, NTP client inspects the packet, extracts the
corresponding time, calculates the time offset and configures the local clock.
SJ-20140504150128-007|2014-05-10 (R1.0)
shows the main principle of NTP client.
10-1
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