H3C Technologies H3C S6300 Series Switches - Manual (Page 56)

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Figure 15 Network diagram
Configuration procedure
1. Set the IP address for each interface as shown in Figure 15 . (Details not shown.)
2. Configure Device A:
# Enable the NTP service.
system-view
[DeviceA] ntp-service enable
# Specify the local clock as the reference source, with the stratum level 2.
[DeviceA] ntp-service refclock-master 2
3. Configure Device B:
# Enable the NTP service.
system-view
[DeviceB] ntp-service enable
# Enable NTP authentication on Device B.
[DeviceB] ntp-service authentication enable
# Set an authentication key, and input the key in plain text.
[DeviceB] ntp-service authentication-keyid 42 authentication-mode md5 simple
aNiceKey
# Specify the key as a trusted key.
[DeviceB] ntp-service reliable authentication-keyid 42
# Specify Device A as the NTP server of Device B, and associate the server with key 42.
[DeviceB] ntp-service unicast-server 1.0.1.11 authentication-keyid 42
Before Device B can synchronize its clock to that of Device A, enable NTP authentication for
Device A.
4. Configure NTP authentication on Device A:
# Enable NTP authentication.
[DeviceA] ntp-service authentication enable
# Set an authentication key, and input the key in plain text.
[DeviceA] ntp-service authentication-keyid 42 authentication-mode md5 simple
aNiceKey
# Specify the key as a trusted key.
[DeviceA] ntp-service reliable authentication-keyid 42
5. Verify the configuration:
# Display the NTP status of Device B after clock synchronization.
[DeviceB] display ntp-service status
Clock status: synchronized
Clock stratum: 3
System peer: 1.0.1.11
Local mode: client