Network requirements – H3C Technologies H3C MSR 5600 User Manual
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[DeviceB] ntp-service enable
# Specify Device A as the IPv6 NTP server of Device B so that Device B is synchronized to Device
A.
[DeviceB] ntp-service ipv6 unicast-server 3000::34
4.
Verify the configuration:
# Display the NTP status of Device B after clock synchronization.
[DeviceB] display ntp-service status
Clock status: synchronized
Clock stratum: 3
System peer: 3000::34
Local mode: client
Reference clock ID: 163.29.247.19
Leap indicator: 00
Clock jitter: 0.000977 s
Stability: 0.000 pps
Clock precision: 2^-10
Root delay: 0.02649 ms
Root dispersion: 12.24641 ms
Reference time: d0c60419.9952fb3e Wed, Dec 29 2010 19:01:45.598
The output shows that Device B has been synchronized to Device A, the clock stratum level of
Device B is 3, and the clock stratum level of Device A is 2.
# Display IPv6 NTP association information for Device B.
[DeviceB] display ntp-service ipv6 sessions
Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.
Source: [12345]3000::34
Reference: 127.127.1.0 Clock stratum: 2
Reachabilities: 15 Poll interval: 64
Last receive time: 19 Offset: 0.0
Roundtrip delay: 0.0 Dispersion: 0.0
Total sessions : 1
The output shows that an association has been set up between Device B and Device A.
NTP symmetric active/passive mode configuration
example
Network requirements
•
As shown in
, 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.