H3C Technologies H3C S6300 Series Switches - Manual (Page 46)

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IPv6 NTP symmetric active/passive mode
configuration example
Network requirements
As shown in Figure 11 , Device C has a clock more accurate than Device A.
• Set the local clock of Device A as a reference source, with the stratum level 3.
• Set the local clock Device C as a reference source, with the stratum level 2.
• Configure Device B to operate in client mode and specify Device A as the IPv6 NTP server of Device
B.
• Configure Device C to operate in symmetric-active mode and specify Device B as the IPv6 passive
peer of Device C.
Figure 11 Network diagram
Configuration procedure
1. Set the IP address for each interface as shown in Figure 11 . (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 3.
[DeviceA] ntp-service refclock-master 3
3. Configure Device B:
# Enable the NTP service.
system-view
[DeviceB] ntp-service enable
# Specify Device A as the IPv6 NTP server of Device B.
[DeviceB] ntp-service ipv6 unicast-server 3000::34
4. Configure Device C:
# Enable the NTP service.