Configuration Examples; Configuring Ntp Server/Client Mode - 3Com 4500 Configuration Manual

To do...
Display the information about the
sessions maintained by NTP
Display the brief information
about NTP servers along the path
from the local device to the
reference clock source

Configuration Examples

Configuring NTP Server/Client Mode

Network requirements
The local clock of Device A (a switch) is to be used as a master clock, with the stratum level of 2.
Device A is used as the NTP server of Device B (an S4500 Ethernet switch)
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
Reference clock ID: none
Nominal frequency: 100.0000 Hz
Actual frequency: 100.0000 Hz
Clock precision: 2^18
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)
# Set Device A as the NTP server of Device B.
<DeviceB> system-view
[DeviceB] ntp-service unicast-server 1.0.1.11
# (After the above configurations, Device B is synchronized to Device A.) View the NTP status of Device
B.
Use the command...
display ntp-service
sessions [ verbose ]
display ntp-service trace
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Remarks