3Com Switch 8800 Advanced Software V5 Configuration Guide

1076 CHAPTER 85: NTP CONFIGURATION
Displaying and
Maintaining NTP
NTP Configuration
Examples
n
Unless otherwise specified, the examples given in this section apply to all switches
and routers that support NTP.
Configuring NTP
Server/Client Mode
Network requirements
The local clock of Device A is to be used as a reference source, with the stratum
level of 2. Device A is to be used as the NTP server of Device B, with Device B as
the client mode, and Device A then as the server automatically.
Network diagram
Figure 314 Network diagram for NTP server/client mode configuration
Configuration procedure
1 Configuration on Device A:
# Specify the local clock as the reference source, with the stratum level of 2.
<DeviceA> system-view
[DeviceA] ntp-service refclock-master 2
2 Configuration on Device B:
# View the NTP status of Device B before clock synchronization.
<DeviceB> display ntp-service status
Clock status: unsynchronized
Clock stratum: 16
Reference clock ID: none
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
Root delay: 0.00 ms
Root dispersion: 0.00 ms
To do... Use the command... Remarks
View the information of NTP
service status
display ntp-service status Available in any view
View the information of NTP
sessions
display ntp-service sessions
[ verbose ]
View the brief information of
the NTP servers from the local
device back to the primary
reference source
display ntp-service trace
1.0.1.11/24 1.0 .1.12/24
Device A Device B