3com WX3000 Manuel D’Utilisation

1-18

Configuration procedure

1) Configure Device C.

# Enter system view.

<DeviceC> system-view

# Set Device C as the broadcast server, which sends broadcast messages through Vlan-interface2.

[DeviceC] interface Vlan-interface 2

[DeviceC-Vlan-interface2] ntp-service broadcast-server

2) Configure Device A. (perform the same configuration on Device D)

# Enter system view.

<DeviceA> system-view

# Set Device A as a broadcast client.

[DeviceA] interface Vlan-interface 2

[DeviceA-Vlan-interface2] ntp-service broadcast-client

After the above configurations, Device A and Device D will listen to broadcast messages through their

own Vlan-interface2, and Device C will send broadcast messages through Vlan-interface2. Because

Device A and Device C do not share the same network segment, Device A cannot receive broadcast

messages from Device C, while Device D is synchronized to Device C after receiving broadcast

messages from Device C.

View the NTP status of Device D after the clock synchronization.

[DeviceD] display ntp-service status

Clock status: synchronized

Clock stratum: 3

Reference clock ID: 3.0.1.31

Nominal frequency: 60.0002 Hz

Actual frequency: 60.0002 Hz

Clock precision: 2^18

Clock offset: 198.7425 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 Device D is synchronized to Device C, with the clock stratum level

of 3, one level lower than that of Device C.

# View the information about the NTP sessions of Device D and you can see that a connection is

established between Device D and Device C.

[DeviceD] display ntp-service sessions

source reference stra reach poll now offset delay disper

**************************************************************************

[1234]3.0.1.31 127.127.1.0 2 1 64 377 26.1 199.53 9.7

note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured Total

associations : 1