H3C Technologies H3C S6300 Series Switches - Manual (Page 47)

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<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 an IPv6 symmetric passive peer.
[DeviceC] ntp-service ipv6 unicast-peer 3000::35
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
Clock status: synchronized
Clock stratum: 3
System peer: 3000::36
Local mode: sym_passive
Reference clock ID: 163.29.247.19
Leap indicator: 11
Clock jitter: 0.000977 s
Stability: 0.000 pps
Clock precision: 2^-10
Root delay: 0.01855 ms
Root dispersion: 9.23483 ms
Reference time: d0c6047c.97199f9f Wed, Dec 29 2010 19:03:24.590
# 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::36
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
Source: [2345]3000::34
Reference: INIT Clock stratum: 3
Reachabilities: 1 Poll interval: 64
Last receive time: 10 Offset: 0.0
Roundtrip delay: 0.0 Dispersion: 0.0
Total sessions : 2
The output shows that an association has been set up between Device B and Device A, and Device
B and Device C.