H3C S7500 Series Operation Manual page 813

Operation Manual – NTP
H3C S7500 Series Ethernet Switches
III. Configuration procedures
1) Configure the S7500 series switch.
# Set H3C2 to be the time server.
<S7500> system-view
[S7500] ntp-service unicast-server 3.0.1.31
2) Configure H3C3 (after the S7500 series switch is synchronized to H3C2).
# Enter system view.
<H3C3> system-view
[H3C3]
# After the local synchronization, set the S7500 series switch to be its peer.
[H3C3] ntp-service unicast-peer 3.0.1.33
The S7500 series switch and H3C3 are configured to be peers with regard to each
other. H3C3 operates in the active peer mode, while the S7500 series switch operates
in the passive peer mode. Because the stratum of the local clock of H3C3 is 1, and that
of the S7500 switch is 3, the S7500 series switch is synchronized to H3C3.
View the status of the S7500 switch after the synchronization.
[S7500] display ntp-service status
Service status: enabled
Clock status: synchronized
Clock stratum: 2
Reference clock ID: 3.0.1.32
Nominal frequency: 250.0000 Hz
Actual frequency: 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 output information indicates that the S7500 series switch is synchronized to H3C3
and the stratum of its local clock is 2, one stratum higher than H3C3.
# View the information about the NTP sessions of the S7500 series switch and you can
see that a connection is established between the S7500 series switch and H3C3.
[S7500] display ntp-service sessions
source
**************************************************************************
[2]3.0.1.32
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
reference stra reach poll
127.127.1.0
1-15
Chapter 1 NTP Configuration
now offset
1 1 64 1 350.1
delay disper
15.1 0.0