3Com 5500G, 4210, 4200G manual NTP Broadcast Mode Configuration

NTP Broadcast Mode Configuration 273

# Set Device C as the symmetric-peer.

<DeviceB> system-view

[DeviceB] ntp-service unicast-peer 3.0.1.33

#View NTP status and NTP session information of Device C after clock synchronization.

[DeviceC] display ntp-service status

[DeviceC] display ntp-service sessions

Complete Configuration ■ Configuration on Device C.

#

ntp-service unicast-server 3.0.1.31

■Configuration on Device B.

#

ntp-service unicast-peer 3.0.1.33

Precautions The local clock of a Switch 5500, 5500G, or 4210 cannot be set as a reference clock. It can synchronize other devices as a reference clock only when its clock is synchronized.

NTP Broadcast Mode

Configuration

Network Diagram Figure 84 Network diagram for NTP broadcast mode configuration

Vlan-int2	Vlan-int2	Vlan-int2
3.0.1.11/24	3.0.1.12/24	3.0.1.12/24

Device A Device B

Vlan-int2 3.0.1.13/24

Device C

Vlan-int2 3.0.1.14/24

	Device D
Networking and	■ The local clock of Device C is to be used as a reference source, with the stratum
Configuration	level of 2. Set Device C to work in the broadcast server mode and send
Requirements	broadcasts through its VLAN-interface 2.
	■ Device A and Device D are two Switch 5500s. Set Device A and Device D to
	work in the broadcast client mode and listen to broadcasts through their
	VLAN-interface 2 respectively.