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• 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

symmetric-passive peer.

Figure 24 Network diagram for NTP symmetric peers mode configuration

Configuration procedure

1. Configure IP addresses for interfaces (Details not shown)

2. Configure 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. 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)

The output shows that Device B has been synchronized to Device A, and the clock stratum level of Device

B is 3.

4. 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 3.0.1.32

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.

Brand

Model

JG221A

HP JG221A User Manual

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