IPv6 NTP symmetric active/passive mode configuration example

As shown in Figure 38, perform the following tasks:

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

• Configure Device A to operate in symmetric-active mode and specify Device B as the IPv6 passive peer of Device A.

1. Assign an IP address to each interface, and make sure Device A and Device B can reach each other, as shown in Figure 38. (Details not shown.)

2. Configure Device B:

   # Enable the NTP service.

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

3. 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
   

   # Configure Device B as an IPv6 symmetric passive peer.

   [DeviceA] ntp-service ipv6 unicast-peer 3000::36
   

4. Verify the configuration:

   # Verify that Device B has synchronized to Device A.

   [DeviceB] display ntp-service status
    Clock status: synchronized
    Clock stratum: 3
    System peer: 3000::35
    Local mode: sym_passive
    Reference clock ID: 251.73.79.32
    Leap indicator: 11
    Clock jitter: 0.000977 s
    Stability: 0.000 pps
    Clock precision: 2^-18
    Root delay: 0.01855 ms
    Root dispersion: 9.23483 ms
    Reference time: d0c6047c.97199f9f  Wed, Dec 29 2010 19:03:24.590
   

   # 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:  [1234]3000::35
    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