Displaying And Maintaining Ntp; Ntp Configuration Examples - 3Com Switch 4800G 24-Port Configuration Manual

960 C 77: NTP C
HAPTER
Displaying and
Maintaining NTP
NTP Configuration
Examples
Configuring NTP
Server/Client Mode
ONFIGURATION
To do...
View the information of NTP service
status
View the information of NTP
sessions
View the brief information of the
NTP servers from the local switch
back to the primary reference
source
Network requirements
The local clock of Switch A is to be used as a reference source, with the stratum
■
level of 2.
Switch B works in the server/client mode and Switch A is to be used as the NTP
■
server of Switch B.
Network diagram
Figure 283 Network diagram for NTP server/client mode configuration
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Switch A
Configuration procedure
1 Configuration on Switch A:
# Specify the local clock as the reference source, with the stratum level of 2.
<SwitchA> system-view
[SwitchA] ntp-service refclock-master 2
2 Configuration on Switch B:
# View the NTP status of Switch B before clock synchronization.
<SwitchB> 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: 2^7
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)
Use the command...
display ntp-service status
display ntp-service sessions
[ verbose ]
display ntp-service trace
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Switch B
Remarks
Available in any view
Available in any view
Available in any view