H3C Technologies H3C MSR 5600 - Manual (Page 99)

86
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.
NTP broadcast mode configuration example
Network requirements
As shown in Figure 33 , Router C functions as the NTP server for multiple devices on a network segment
and synchronizes the time among multiple devices.
• Router C's local clock is to be used as a reference source, with the stratum level 2.
• Router C operates in broadcast server mode and sends out broadcast messages from Ethernet 1/1.
• Router B and Router A operate in broadcast client mode and receive broadcast messages through
their respective Ethernet 1/1.