After Device B is synchronized to Device A , Device C works in the symmetric-active mode and
Device B will act as peer of Device C. Device C is the symmetric-active peer while Device B is the
Figure 24 Network diagram for NTP symmetric peers mode configuration
Configure IP addresses for interfaces (Details not shown)
Configure Device B:
# Specify Device A as the NTP server of Device B.
[DeviceB] ntp-service unicast-server 220.127.116.11
View the NTP status of Device B after clock synchronization.
[DeviceB] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 18.104.22.168
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)
The output shows that Device B has been synchronized to Device A, and the clock stratum level of Device
B is 3.
Configure 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 22.214.171.124
The output shows that 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 16 while that of Device B is 3, Device B is synchronized to Device C.
# View the NTP status of Device C after clock synchronization.