3Com MSR 50 Series Configuration Manual page 2066

2066 C 111: NTP C
HAPTER ONFIGURATION
Network diagram
Figure 618 Network diagram for NTP broadcast mode configuration
Eth1/0
1.0.1.11 /24
Router A
Configuration procedure
1 Configuration on Router C:
# Specify the local clock as the reference source, with the stratum level of 2.
<RouterC> system-view
[RouterC] ntp-service refclock-master 2
# Configure Router C to work in the broadcast server mode and send broadcast
messages through Ethernet 1/0.
[RouterC] interface ethernet 1/0
[RouterC-Ethernet1/0] ntp-service broadcast-server
2 Configuration on Router D:
# Configure Router D to work in the broadcast client mode and receive broadcast
messages on Ethernet 1/0.
<RouterD> system-view
[RouterD] interface ethernet 1/0
[RouterD-Ethernet1/0] ntp-service broadcast-client
3 Configuration on Router A:
# Configure Router A to work in the broadcast client mode and receive broadcast
messages on Ethernet 1/0.
<RouterA> system-view
[RouterA] interface ethernet 1/0
[RouterA-Ethernet1/0] ntp-service broadcast-client
Because Router A and Router C are on different subnets, Router A cannot receive
the broadcast messages from Router C. Router D gets synchronized upon
receiving a broadcast message from Router C.
# View the NTP status of Router D after clock synchronization.
Eth1/1 Eth1/0
1.0.1.10/24 3.0.1.30/24
Router B
Eth1/0
3.0.1.31 /24
Router C
Eth1/0
3.0.1.32 /24
Router D