R21xx-HP FlexFabric 11900 Network Management and Monitoring Configuration Guide

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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 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 11, 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.