H3C Technologies H3C S3100 Series Switches - Manual (Page 477)

Operation Manual – NTP
H3C S3100-52P Ethernet Switch Chapter 1 NTP Configuration
1-15
Actual frequence: 249.9992 Hz
Clock precision: 2^19
Clock offset: 0.66 ms
Root delay: 27.47 ms
Root dispersion: 208.39 ms
Peer dispersion: 9.63 ms
Reference time: 17:03:32.022 UTC Thu Sep 6 2001 (BF422AE4.05AEA86C)
The above output information indicates that the S3100-52P switch is synchronized to
H3C1, and the stratum level of its clock is 3, one level lower than that of H3C1.
# View the information about NTP sessions of the S3100-52P switch. (You can see that
the S3100-52P switch establishes a connection with H3C1.)
[S3100-52P] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[12345]1.0.1.11 127.127.1.0 2 1 64 1 350.1 15.1 0.0
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
1.7.2 Configuring NTP Peer Mode
I. Network requirements
The local clock of H3C2 is set to the NTP master clock, with the clock stratum level of 2.
An S3100-52P Ethernet switch considers H3C2 as the NTP server and serves as the
client, while H3C2 operates in server mode automatically. In addition, H3C3 considers
the S3100-52P Ethernet switch as its peer.
Note:
This example assumes that:
z
H3C2 is a switch that allows its local clock to be the master clock.
z
H3C3 is a switch that allows its local clock to be the master clock and the stratum
level of its clock is 1.