3Com 4200G NTP Multicast Mode Configuration, Multicast through its VLAN-interface, Respectively

NTP Multicast Mode Configuration 275

Precautions The local clock of the 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 Multicast Mode

Configuration

Network Diagram Figure 85 Network diagram for NTP multicast 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 multicast server mode and send
Requirements	multicast through its VLAN-interface 2.
	■ Device A and Device D are Switch 5500s. Set Device A and Device D to work in
	the multicast client mode and listen to multicasts through their VLAN-interface

2 respectively.

Applicable Products

Product series	Software version	Hardware version
Switch 5500	Release V03.02.04	All versions
Switch 5500G	Release V03.02.04	All versions
Switch 4500	Release V03.03.00	All versions
Switch 4210	Release V03.01.00	All versions

Configuration Procedure ■ Configure Device C.

#Set Device C to work as the multicast server and send multicasts through its VLAN-interface 2.

<DeviceC> system-view

[DeviceC] interface Vlan-interface 2

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

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

#Set Device A to work as the multicast client and listen multicasts through its VLAN-interface 2.