H3C S3610-28P Operation Manual page 1201

Operation Manual – NTP
H3C S3610&S5510 Series Ethernet Switches
II. Network diagram
Figure 1-8 Network diagram for NTP symmetric peers mode configuration
III. Configuration procedure
1) Configuration on Device A:
# Specify the local clock as the reference source, with the stratum level of 2.
<DeviceA> system-view
[DeviceA] ntp-service refclock-master 2
2) 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
3) Configuration on Device C (after Device B is synchronized to Device A):
# Specify the local clock as the reference source, with the stratum level of 1.
<DeviceC> system-view
[DeviceC] ntp-service refclock-master 1
# 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 B is
synchronized to Device C.
# View the NTP status of Device B after clock synchronization.
[DeviceB] display ntp-service status
Clock status: synchronized
Clock stratum: 2
Reference clock ID: 3.0.1.33
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Chapter 1 NTP Configuration