H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 507)

54-22
As shown above, AC A has been synchronized to AC C, and the clock stratum level of AC A is 3, while
that of AC C is 2.
# View the NTP session information of AC A, which shows that an association has been set up between
AC A and AC C.
[AC A-Vlan-interface3] 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
Refer to the Multicast Protocol in H3C WX6103 Access Controller Switch Interface Board Configuration
Guide for detailed description of the multicast function.
Configuring NTP Server/Client Mode with Authentication
Network requirements
z
The local clock of AC A is to be configured as a reference source, with the stratum level of 2.
z
AC B works in the client mode and AC A is to be used as the NTP server of AC B, with AC B as the
client.
z
NTP authentication is to be enabled for AC A and AC B at the same time.
Network diagram
Figure 54-11 Network diagram for configuration of NTP server/client mode with authentication
Configuration procedure
1) Configuration on AC A:
# Specify the local clock as the reference source, with the stratum level of 2.
<AC A> system-view
[AC A] ntp-service refclcok-master 2
2) Configuration on AC B:
<AC B> system-view
# Enable NTP authentication on AC B.
[AC B] ntp-service authentication enable
# Set an authentication key.
[AC B] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey
# Specify the key as key as a trusted key.
[AC B] ntp-service reliable authentication-keyid 42
# Specify AC A as the NTP server.