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1-17

Figure 1-8 Network diagram for NTP symmetric peers mode configuration

Configuration procedure

1) Configuration on Device B:

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

<DeviceB> system-view

[DeviceB] ntp-service unicast-server 3.0.1.31

2) View the NTP status of Device B after clock synchronization.

[DeviceB] display ntp-service status

Clock status: synchronized

Clock stratum: 3

Reference clock ID: 3.0.1.31

Nominal frequency: 100.0000 Hz

Actual frequency: 100.0000 Hz

Clock precision: 2^18

Clock offset: -21.1982 ms

Root delay: 15.00 ms

Root dispersion: 775.15 ms

Peer dispersion: 34.29 ms

Reference time: 15:22:47.083 UTC Sep 19 2005 (C6D95647.153F7CED)

As shown above, Device B has been synchronized to Device A, and the clock stratum level of Device B

is 3, while that of Device C is 1.

3) Configuration on Device C (after Device B is synchronized to Device A):

# Configure Device B as a symmetric peer after local synchronization.

[DeviceC] ntp-service unicast-peer 3.0.1.32

In the step above, Device B and Device C are configured as symmetric peers, with Device C in the

symmetric-active mode and Device B in the symmetric-passive mode. Because the stratus level of

Device C is 1 while that of Device B is 3, Device C is synchronized to Device B.

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

[DeviceB] display ntp-service status

Clock status: synchronized

Clock stratum: 4

Reference clock ID: 3.0.1.32

Nominal frequency: 100.0000 Hz

H3C S5120-SI Series User Manual

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