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Disabling an Interface from Receiving NTP Messages
Follow these steps to disable an interface from receiving NTP messages:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter VLAN interface view
interface Vlan-interface
vlan-id
—
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 S4200G 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.
<DeviceB> display ntp-service status
Clock status: unsynchronized
Clock stratum: 16
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