R3721-F3210-F3171-HP High-End Firewalls System Management and Maintenance Configuration Guide-6PW101
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Configuring the NTP broadcast mode
The broadcast server periodically sends NTP broadcast messages to the broadcast address
255.255.255.255. After receiving the messages, the device operating in NTP broadcast client mode
sends a reply and synchronizes its local clock.
For devices operating in broadcast mode, configure both the server and clients. Because an interface
needs to be specified on the broadcast server for sending NTP broadcast messages and an interface
also needs to be specified on each broadcast client for receiving broadcast messages, the NTP
broadcast mode can be configured only in the specific interface view.
Configuring a broadcast client
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
This command enters the view of
the interface for sending NTP
broadcast messages.
3. Configure the device to
operate in NTP broadcast
client mode.
ntp-service broadcast-client N/A
Configuring the broadcast server
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
This command enters the view of the
interface for sending NTP broadcast
messages.
3. Configure the device to
operate in NTP broadcast
server mode.
ntp-service broadcast-server
[ authentication-keyid keyid |
version number ]*
A broadcast server can synchronize
broadcast clients only after its clock has
been synchronized.
Configuring the 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 operating in multicast mode, configure both the server and clients. The NTP multicast mode
must be configured in the specific interface view.
Configuring a multicast client
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
This command enters the view of the
interface for sending NTP multicast
messages.