R211x-HP Flexfabric 11900 Network Management and Monitoring Configuration Guide

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NTP symmetric active/passive mode configuration
example
Network requirements
• As shown in Figure 11, Device C has a clock more accurate than Device A. Set the local clock of
Device A as a reference source, with the stratum level 3.
• Set the local clock Device C as a reference source, with the stratum level 2.
• Configure Device B to operate in client mode and specify Device A as the NTP server of Device B.
• Configure Device C to operate in symmetric-active mode and specify Device B as the passive peer
of Device C.
Figure 11 Network diagram
Configuration procedure
1. Set the IP address for each interface as shown in Figure 11. (Details not shown.)
2. Configure Device A:
# Enable the NTP service.
<DeviceA> system-view
[DeviceA] ntp-service enable
# Specify the local clock as the reference source, with the stratum level 3.
[DeviceA] ntp-service refclock-master 3
3. Configure Device B:
# Enable the NTP service.
[DeviceB] ntp-service enable
# Specify Device A as the NTP server of Device B.
[DeviceB] ntp-service unicast-server 3.0.1.31
4. Configure Device C:
# Enable the NTP service.
<DeviceC> system-view
[DeviceC] ntp-service enable