H3C Technologies H3C S7500E Series Switches - Manual (Page 76)

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Configuring the broadcast server
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
Enter the interface used to send
NTP broadcast messages.
Configure the device to work in
the NTP broadcast server mode
ntp-service broadcast-server
[ authentication-keyid keyid |
version number ] *
Required
A broadcast server can synchronize broadcast clients only after its clock has been
synchronized.
Configuring NTP Multicast Mode
The multicast server periodically sends NTP multicast messages to multicast clients, which
send replies after receiving the messages and synchronize their local clocks.
For devices working in the multicast mode, you need to configure both the server and clients.
The NTP multicast mode must be configured in the specific interface view.
Configuring a multicast client
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
Enter the interface used to
receive NTP multicast
messages.
Configure the device to work in
the NTP multicast client mode
ntp-service multicast-client
[ ip-address ]
Required
Configuring the multicast server
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
Enter the interface used to send
NTP multicast message.