Operation Manual – NTP
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 1
NTP Configuration
1-20
[S3600-1]
# Enter Vlan-interface2 view.
[S3600-1] interface Vlan-interface 2
# Set S3600-1 to a multicast client.
[S3600-1-Vlan-interface2] ntp-service multicast-client
3) Configure S3600-2.
# Enter system view.
<S3600-2> system-view
[S3600-2]
# Enter Vlan-interface2 view.
[S3600-2] interface Vlan-interface 2
# Set S3600-2 to a multicast client.
[S3600-2-Vlan-interface2] ntp-service multicast-client
After the above configurations, S3600-1 and S3600-2 respectively listen to multicast
packets through their own Vlan-interface2, and H3C3 advertises multicast packets
through Vlan-interface2. Because S3600-2 and S3600-3 do not share the same
network segment, S3600-2 cannot receive multicast packets from H3C3, while
S3600-1 is synchronized to H3C3 after receiving multicast packets from H3C3.
View the status of S3600-1 after synchronization.
[S3600-1] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 3.0.1.31
Nominal frequency: 60.0002 Hz
Actual frequency: 60.0002 Hz
Clock precision: 2^18
Clock offset: 0.0000 ms
Root delay: 63.21 ms
Root dispersion: 0.30 ms
Peer dispersion: 46.13 ms
Reference time: 07:18:32.952 UTC Apr 25 2006(C7F84BC8.F3BBD7B2)
The output information indicates that S3600-1 is synchronized to H3C3, with a clock
stratum level of 3, one stratum level lower than that H3C3.
# View the information about the NTP sessions of S3600-1 (You can see that a
connection is established between S3600-1 and H3C3).
[S3600-1] display ntp-service sessions
source reference stra reach poll now offset delay disper
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