H3C Technologies H3C S3600 Series Switches - Manual (Page 882)

1-15
To do… Use the command… Remarks
Disable an interface from
receiving NTP messages ntp-service in-interface
disable
Required
By default, a VLAN interface
receives NTP messages.
Displaying NTP Configuration
To do… Use the command… Remarks
Display the status of NTP
services
display ntp-service status
Display the information about the
sessions maintained by NTP display ntp-service
sessions [ verbose ]
Display the brief information
about NTP servers along the path
from the local device to the
reference clock source
display ntp-service trace
Available in any view
Configuration Examples
Configuring NTP Server/Client Mode
Network requirements
z The local clock of Device A (a switch) is to be used as a master clock, with the stratum level of 2.
z Device A is used as the NTP server of Device B (an S3600 Ethernet switch)
z Configure Device B to work in the client mode, and then Device A will automatically work in the
server mode.
Network diagram
Figure 1-6 Network diagram for the NTP server/client mode configuration
Configuration procedure
Perform the following configurations on Device B.
# View the NTP status of Device B before synchronization.
display ntp-service status
Clock status: unsynchronized
Clock stratum: 16
Reference clock ID: none
Nominal frequency: 100.0000 Hz
Actual frequency: 100.0000 Hz
Clock precision: 2^18
Clock offset: 0.0000 ms