R3204P16-HP Load Balancing Module System Management Configuration Guide-6PW101

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Clock stratum: 3
Reference clock ID: 1.0.1.11
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
Root delay: 31.00 ms
Root dispersion: 1.05 ms
Peer dispersion: 7.81 ms
Reference time: 14:53:27.371 UTC Sep 19 2005 (C6D94F67.5EF9DB22)
As shown above, LB B has been synchronized to LB A, and the clock stratum level of LB B is 3, while that
of LB A is 2.
# View the NTP session information of LB B, which shows that an association has been set up LB B and
LB A.
[LB B] display ntp-service sessions
source reference stra reach poll now offset delay disper
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[12345] 1.0.1.11 127.127.1.0 2 63 64 3 -75.5 31.0 16.5
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
Configuring NTP broadcast mode with authentication
Network requirements
As shown in Figure 64, LB A functions as the NTP server for multiple devices on different network
segments and synchronizes the time among multiple devices. To realize this requirement and ensure
network security, perform the following configurations:
• LB A’s local clock is to be used as a reference source, with the stratum level of 3.
• LB A works in the broadcast server mode and sends out broadcast messages from
Ten-GigabitEthernet 0/0.1.
• LB B works in the broadcast client mode and receives broadcast client through Ten-GigabitEthernet
0/0.1.
• NTP authentication is enabled on both LB A and LB B.