H3C Technologies H3C S6300 Series Switches - Manual (Page 44)

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The output shows that Device B has been synchronized to Device A, the clock stratum level of
Device B is 3, and that 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 Figure 10 , 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.
• Configure Device C to operate in symmetric-active mode and specify Device B as the passive peer
of Device C.
Figure 10 Network diagram
Configuration procedure
1. Set the IP address for each interface as shown in Figure 10 . (Details not shown.)
2. Configure Device A: