Configuration Procedures - 3Com 4200G 12-Port Configuration Manual

Network diagram
Figure 94 Network diagram for the NTP server mode configuration

Configuration procedures

The following configurations are for the S4200G 1 switch.
1 Display the NTP status of the S4200G 1 switch before synchronization.
<S4200G> display ntp-service status
clock status: unsynchronized
clock stratum: 16
reference clock ID: none
nominal frequence: 99.8562 Hz
actual frequence: 99.8562 Hz
clock precision: 2^7
clock offset: 0.0000 ms
root delay: 0.00 ms
root dispersion: 0.00 ms
peer dispersion: 0.00 ms
reference time: 00:00:00.000 UTC Jan 1 1900 (00000000.00000000)
2 Configure S4200G 2 to be the time server.
S4200G> system-view
System View: return to User View with Ctrl+Z.
[S4200G] ntp-service unicast-server 1.0.1.11
3 After the above configuration, the S4200G 1 switch is synchronized to S4200G 2.
Display the NTP status of the S4200G 1 series switch.
[S4200G] display ntp-service status
clock status: synchronized
clock stratum: 3
reference clock ID: 1.0.1.11
nominal frequence: 250.0000 Hz
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 S4200G 1 series switch is
synchronized to S4200G 2, and the stratum of its clock is 3, one stratum higher than
S4200G 2.
4 Display the information about the NTP sessions of the S4200G 2 series switch. You
can see that the S4200G 1 series switch establishes a connection with S4200G 2.
[S4200G]dis ntp-service sessions
source
****************************************************
[ 5]1.0.1.11
0.0
reference stra reach poll
0.0.0.0
Configuration Example 301
now offset
2 1 64 1 350.1
delay disper
15.1