3Com WX3000 operation manual 8Network diagram for the NTP broadcast mode configuration

Reference clock ID: 3.0.1.32

Nominal frequency: 60.0002 Hz

Actual frequency: 60.0002 Hz

Clock precision: 2^18

Clock offset: 0.66 ms

Root delay: 27.47 ms

Root dispersion: 208.39 ms

Peer dispersion: 9.63 ms

Reference time: 17:03:32.022 UTC Thu Sep 7 2006 (BF422AE4.05AEA86C)

The output information indicates that the clock of Device C is synchronized to that of Device B and the stratum level of its local clock is 2, one level lower than Device B.

#View the information about the NTP sessions of Device C (you can see that a connection is established between Device C and Device B).

[DeviceC] display ntp-service sessions

source reference stra reach poll now offset delay disper

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[1234]3.0.1.32		LOCL	1	95	64	42	-14.3	12.9	2.7
[25]3.0.1.31		127.127.1.0	2	1	64	1	4408.6	38.7	0.0
note:	1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total	associations : 2

Configuring NTP Broadcast Mode

Network requirements

z

z

As shown in Figure 1-8, the local clock of Device C is set as the NTP master clock, with a stratum level of 2. Configure Device C to work in the NTP broadcast server mode and send NTP broadcast messages through Vlan-interface2.

Device A and Device D are two WX3000 series devices. Configure Device A and Device D to work in the NTP broadcast client mode and listen to broadcast messages through their own Vlan-interface2.

Figure 1-8Network diagram for the NTP broadcast mode configuration

Vlan -int2 1.0.1.31/24

Device A Device B

Vlan -int2 3.0.1.31 /24

Device C

Vlan -int2 3.0.1.32/24

Device D

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