4000 Router Series Network Management and Monitoring Configuration Guide

• Configure Device C to operate in symmetric-active mode and specify Device B as the passive peer

of Device C.

Figure 31 Network diagram

Configuration procedure

1. Set the IP address for each interface as shown in Figure 31. (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

# Specify the local clock as the reference source, with the stratum level 2.

[DeviceC] ntp-service refclock-master 2

# Configure Device B as a symmetric passive peer.

[DeviceC] ntp-service unicast-peer 3.0.1.32

5. Verify the configuration:

# After the configuration, Device B has two time servers Device A and Device C. Device C has a

lower stratum level than Device A, so Device B selects Device C as a reference clock to synchronize

to Device C. After synchronization, view the status of Device B. The output shows that Device B has

been synchronized to Device C.

[DeviceB] display ntp-service status