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1-15

Operation Command Description

Display the brief information about NTP servers

along the path from the local device to the

reference clock source

display ntp-service trace

Configuration Example

Configuring NTP Server/Client Mode

Network requirements

z The local clock of Device A (a switch) is to be used as a master clock, with the stratum level of 2.

z Device A is used as the NTP server of Device B (an S3100 Ethernet switch)

z Configure Device B to work in the client mode, and then Device A will automatically work in the

server mode.

Network diagram

Figure 1-6 Network diagram for the NTP server/client mode configuration

Configuration procedure

Perform the following configurations on Device B.

# View the NTP status of Device B before synchronization.

<DeviceB> 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: 2^18

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)

# Set Device A as the NTP server of Device B.

<DeviceB> system-view

[DeviceB] ntp-service unicast-server 1.0.1.11

# (After the above configurations, Device B is synchronized to Device A.) View the NTP status of Device

[DeviceB] display ntp-service status

Clock status: synchronized

Clock stratum: 3

Reference clock ID: 1.0.1.11

Nominal frequency: 100.0000 Hz

H3C S3100 Series User Manual

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