HUAWEI ARG3 ROUTER How To - Configuring NTP multicast mode

HUAWEI ARG3 ROUTER - HOW TO

Configuring NTP multicast mode

HUAWEI ARG3 ROUTER HOW TO



The Network Time Protocol (NTP) is an

application layer protocol in the TCP/IP

protocol suite. It is used to synchronize

the time among a set of distributed time

servers and clients.

As network topologies become

increasingly complex, clock

synchronization becomes more important

for devices on the entire network. If a

system clock is modified manually by

network administrators, the workload is

heavy and the modification is error-

prone, which affects clock precision. NTP

can solve this problem. There are several

NTP operating modes to perform time

synchronization, but NTP multicast mode

is useful when there are large numbers of

clients distributed in a network.

A simple network scenario is shown in the

picture.

We will assume that RouterA is locked to

a radio clock primary source; we will

show how to configure RouterA as NTP

multicast server and RouterB/RouterC as

NTP multicast clients.

General infos and application environment



1. Configure the NTP multicast server

Configuring the NTP multicast server

<RouterA> system-view

[RouterA] ntp-service refclock-master 2

[RouterA] interface gigabitetherne 0/0/0

[RouterA-GigabitEthernet0/0/0] ntp-service multicast-server

[RouterA-GigabitEthernet0/0/0] quit

<RouterA>

Enter the configuration view

Configure the local clock as NTP

primary clock with stratum 2

Enter the interface view

Configure the NTP multicast server mode

Exit the interface view



2. Configure the NTP multicast clients

Configuring the NTP multicast clients (1)

<RouterB> system-view

[RouterB] interface gigabitetherne 0/0/0

[RouterB-GigabitEthernet0/0/0] ntp-service multicast-client

[RouterB-GigabitEthernet0/0/0] quit

[RouterB]



Configure the NTP multicast client mode




Configuring the NTP multicast clients (2)

<RouterC> system-view

[RouterC] interface gigabitetherne 0/0/0

[RouterC-GigabitEthernet0/0/0] ntp-service multicast-server

[RouterC-GigabitEthernet0/0/0] quit

[RouterC]



Configure the NTP multicast client mode




Checking the configuration

[RouterB] disp ntp-service status

clock status: synchronized

clock stratum: 3

reference clock ID: 100.1.1.1

nominal frequency: 100.0000 Hz

actual frequency: 100.0000 Hz

clock precision: 2^17

clock offset: 0.0000 ms

root delay: 0.00 ms

root dispersion: 0.81 ms

peer dispersion: 0.00 ms

reference time: 12:14:42.664 UTC Nov 27 2014(D8219432.AA25F753)

[RouterB]

Check the NTP configuration on RouterB

(and RouterC)



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HUAWEI ARG3 ROUTER How To - Configuring NTP multicast mode

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