IPv6 NTP client/server mode configuration example

As shown in Figure 36, perform the following tasks:

• Configure the local clock of Device A as a reference source, with stratum level 2.

• Configure Device B to operate in client mode and Device A to be used as the IPv6 NTP server for Device B.

1. Assign an IP address to each interface, and make sure Device A and Device B can reach each other, as shown in Figure 36. (Details not shown.)

2. Configure Device A:

   # Enable the NTP service.

   <DeviceA> system-view
   [DeviceA] ntp-service enable
   

   # Specify the local clock as the reference source, with stratum level 2.

   [DeviceA] ntp-service refclock-master 2
   

3. Configure Device B:

   # Enable the NTP service.

   <DeviceB> system-view
   [DeviceB] ntp-service enable
   

   # Specify Device A as the IPv6 NTP server of Device B so that Device B is synchronized to Device A.

   [DeviceB] ntp-service ipv6 unicast-server 3000::34
   

4. Verify the configuration:

   # Verify that Device B has synchronized to Device A, and the clock stratum level is 3 on Device B and 2 on Device A.

   [DeviceB] display ntp-service status
    Clock status: synchronized
    Clock stratum: 3
    System peer: 3000::34
    Local mode: client
    Reference clock ID: 163.29.247.19
    Leap indicator: 00
    Clock jitter: 0.000977 s
    Stability: 0.000 pps
    Clock precision: 2^-18
    Root delay: 0.02649 ms
    Root dispersion: 12.24641 ms
    Reference time: d0c60419.9952fb3e  Wed, Dec 29 2010 19:01:45.598
   

   # Verify that an IPv6 NTP association has been established between Device B and Device A.

   [DeviceB] display ntp-service ipv6 sessions
   Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.
   
    Source: [12345]3000::34
    Reference: 127.127.1.0          Clock stratum: 2
    Reachabilities: 15              Poll interval: 64
    Last receive time: 19           Offset: 0.0
    Roundtrip delay: 0.0            Dispersion: 0.0
   
    Total sessions: 1