Configuring Basic Ntp Functions - Huawei NetEngine5000E Configuration Manual

HUAWEI NetEngine5000E Core Router
Configuration Guide - System Management
Working Mode
Multicast Mode

2.3 Configuring Basic NTP Functions

This section describes how to configure basic NTP functions.
Applicable Environment
NTP has
meet various clock synchronization requirements.
In unicast server/client mode and peer mode, NTP packets can have the same source IP address.
Pre-configuration Tasks
Before configuring basic functions of NTP, you need to complete the following tasks:
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four operation modes. Select a proper mode based on the networking topology to
Configuring the link layer protocol for the interface
Configuring an IP address and a routing protocol for the interface to ensure that NTP packets
can reach destinations
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Location and
Synchronization Direction
In this mode, you need to
configure both, the server and
the client.
The client can be synchronized
with the server but the server
cannot be synchronized with the
client.
2 NTP Configuration
Working Principle
1. The server periodically
sends clock
synchronization packets
to the configured
multicast IP address.
2. The client senses
multicast packets from
the server.
3. After receiving the first
multicast packet, to
estimate the network
delay, the client enables
a temporary server/client
model for exchanging
messages with the
remote server.
4. The client works in
multicast client mode,
and continues to sense
the incoming multicast
packets to synchronize
the local clock.
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