NTP Configuration Examples 967
# View the NTP status of Switch A after clock synchronization.
[SwitchA] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 3.0.1.31
Nominal frequency: 100.0000 Hz
Actual frequency: 100.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
Root delay: 40.00 ms
Root dispersion: 10.83 ms
Peer dispersion: 34.30 ms
Reference time: 16:02:49.713 UTC Apr 20 2007 (C6D95F6F.B6872B02)
As shown above, Switch A has been synchronized to Switch C, and the clock
stratum level of Switch A is 3, while that of Switch C is 2.
# View the NTP session information of Switch A, which shows that an association
has been set up between Switch A and Switch C.
[SwitchA] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[1234] 3.0.1.31 127.127.1.0 2 255 64 26 -16.0 40.0 16.6
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
n
Refer to “Multicast Routing and Forwarding Configuration” on page 701 for
detailed description of the multicast function.
Configuring NTP
Server/Client Mode with
Authentication
Network requirements
■ The local clock of Switch A is to be configured as a reference source, with the
stratum level of 2.
■ Switch B works in the client mode and Switch A is to be used as the NTP server
of Switch B, with Switch B as the client.
■ NTP authentication is to be enabled for Switch A and Switch B at the same
time.
Network diagram
Figure 287 Network diagram for configuration of NTP server/client mode with
authentication
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 refclcok-master 2
1.0.1.11/24 1 .0.1.12/24
Switch A Switch B
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