Ntp Configuration Examples - H3C S5500-EI series Operation Manual

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Operation Manual – NTP

H3C S5500-EI Series Ethernet Switches

1.8 NTP Configuration Examples

1.8.1 Configuring NTP Server/Client Mode

I. Network requirements

The local clock of Switch A is to be used as a reference source, with the stratum

Switch B works in the server/client mode and Switch A is to be used as the NTP

server of Switch B.

II. Network diagram

Figure 1-7 Network diagram for NTP server/client mode configuration

III. Configuration procedure

Configuration on Switch A:

# Specify the local clock as the reference source, with the stratum level of 2.

<SwitchA> system-view

[SwitchA] ntp-service refclock-master 2

Configuration on Switch B:

# View the NTP status of Switch B before clock synchronization.

<SwitchB> display ntp-service status

Clock status: unsynchronized

Clock stratum: 16

Reference clock ID: none

Nominal frequency: 100.0000 Hz

Actual frequency: 100.0000 Hz

Clock precision: 2^7

Clock offset: 0.0000 ms

Root delay: 0.00 ms

Root dispersion: 0.00 ms

Peer dispersion: 0.00 ms

Reference time: 00:00:00.000 UTC Jan 1 1900 (00000000.00000000)

# Specify Switch A as the NTP server of Switch B so that Switch B is synchronized to

<SwitchB> system-view

[SwitchB] ntp-service unicast-server 1.0.1.11

# View the NTP status of Switch B after clock synchronization.

Chapter 1 NTP Configuration

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