Configuration procedure – H3C Technologies H3C SR8800 User Manual

Page 83

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Figure 26 Network diagram

Configuration procedure

1.

Set the IP address for each interface as shown in

Figure 26

. (Details not shown)

2.

Configure 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

3.

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

4.

Configure 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

Nominal frequency: 64.0000 Hz

Actual frequency: 64.0000 Hz

Clock precision: 2^7

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)

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