1-19
Configuring NTP Multicast Mode
Network requirements
z As shown in Figure 1-9, the local clock of Device C is set as the NTP master clock, with a clock
stratum level of 2. Configure Device C to work in the NTP multicast server mode and advertise
multicast NTP messages through Vlan-interface2.
z Device A and Device D are two WX3000 series devices. Configure Device A and Device D to work
in the NTP multicast client mode and listen to multicast messages through their own
Vlan-interface2.
Figure 1-9 Network diagram for NTP multicast mode configuration
Vlan - in t 2
1. 0. 1.31/24
Vlan-int2
3.0.1.31/24
Vlan-int2
3.0.1.32/24
Device A Device B
Device C
Device D
Configuration procedure
1) Configure Device C.
# Enter system view.
<DeviceC> system-view
# Set Device C as a multicast server to send multicast messages through Vlan-interface2.
[DeviceC] interface Vlan-interface 2
[DeviceC-Vlan-interface2] ntp-service multicast-server
2) Configure Device A (perform the same configuration on Device D).
# Enter system view.
<DeviceA> system-view
# Set Device A as a multicast client to listen to multicast messages through Vlan-interface2.
[DeviceA] interface Vlan-interface 2
[DeviceA-Vlan-interface2] ntp-service multicast-client
After the above configurations, Device A and Device D respectively listen to multicast messages
through their own Vlan-interface2, and Device C advertises multicast messages through
Vlan-interface2. Because Device A and Device C do not share the same network segment, Device A
cannot receive multicast messages from Device C, while Device D is synchronized to Device C after
receiving multicast messages from Device C.
View the NTP status of Device D after the clock synchronization.
[DeviceD] display ntp-service status
