H3C Technologies H3C WX5500E Series Access Controllers - Manual (Page 35)

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NTP broadcast mode configuration example
Network requirements
As shown in Figure 13 , Switch C functions as the NTP server for multiple devices on a network segment
and synchronizes the time among multiple devices.
• Switch C’s local clock is to be used as a reference source, with the stratum level 2.
• Switch C operates in broadcast server mode and sends out broadcast messages from
VLAN-interface 2.
• Switch A and Switch B operate in broadcast client mode, and listen to broadcast messages through
their VLAN-interface 2 respectively.
Figure 13 Network diagram
Configuration procedure
1. Set the IP address for each interface as shown in Figure 13 . (Details not shown.)
2. Configure Switch C:
# Configure Switch C to operate in broadcast server mode and send broadcast messages through
VLAN-interface 2.
[SwitchC] interface vlan-interface 2
[SwitchC-Vlan-interface2] ntp-service broadcast-server
3. Configure Switch A:
# Configure Switch A to operate in broadcast client mode and receive broadcast messages on
VLAN-interface 2.
<SwitchA> system-view
[SwitchA] interface vlan-interface 2
[SwitchA-Vlan-interface2] ntp-service broadcast-client
4. Configure Switch B:
# Configure Switch B to operate in broadcast client mode and receive broadcast messages on
VLAN-interface 2.
<SwitchB> system-view
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] ntp-service broadcast-client
Switch A and Switch B get synchronized upon receiving a broadcast message from Switch C.