Configuring Ntp Broadcast Mode - 3Com 4510G Configuration Manual

Configuring NTP Broadcast Mode

Network requirements
The local clock of Switch C is to be used as the master clock, with a stratum level of 2.
Switch C works in the broadcast server mode and sends out broadcast messages from
VLAN-interface 2.
Switch A and Switch D work in the broadcast client mode. Switch A listens to broadcast messages
through its VLAN-interface 3 and Switch D from its VLAN-interface 2.
Figure 24-9 Network diagram for NTP broadcast mode configuration
Vlan-int3
1.0.1.11/24
Switch A
Configuration procedure
1) Configuration on Switch C:
# Configure Switch C to work in the broadcast server mode and send broadcast messages through
VLAN-interface 2.
<SwitchC> system-view
[SwitchC] interface vlan-interface 2
[SwitchC-Vlan-interface2] ntp-service broadcast-server
2) Configuration on Switch D:
# Configure Switch D to work in the broadcast client mode and receive broadcast messages on
VLAN-interface 2.
<SwitchD> system-view
[SwitchD] interface vlan-interface 2
[SwitchD-Vlan-interface2] ntp-service broadcast-client
3) Configuration on Switch A:
# Configure Switch A to work in the broadcast client mode and receive broadcast messages on
VLAN-interface 3.
<SwitchA> system-view
[SwitchA] interface vlan-interface 3
[SwitchA-Vlan-interface3] ntp-service broadcast-client
Vlan-int3 Vlan-int2
1.0.1.10/24 3.0.1.30/24
Switch B
Vlan-int2
3.0.1.31/24
Switch C
Vlan-int2
3.0.1.32/24
Switch D
24-18