H3C Technologies H3C MSR 50 - Manual (Page 46)

Step Command Remarks
By default, no symmetric-passive
peer is specified. ntp-service unicast-peer
[ vpn-instance vpn-instance-name ]
{ ip-address | peer-name }
[ authentication-keyid keyid |
priority | source-interface
interface-type interface-number |
version number ] *
The ip-address argument must be a
unicast address, rather than a
broadcast address, a multicast
address, or the IP address of the
local clock.
43. Specify a symmetric-passive
peer for the device.
Configuring 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.
Configure the NTP broadcast mode on both the server and clients. The NTP broadcast mode can only be
configured in a specific interface view because an interface needs to be specified on the broadcast
server for sending NTP broadcast messages and on each broadcast client for receiving broadcast
messages.
For more information about tunnel interfaces, see Layer 3—IP Services Configuration Guide.
Configuring a broadcast client
Step Command Remarks
44. Enter system view. N/A system-view
This command enters the view of
the interface for sending NTP
broadcast messages.
interface interface-type
interface-number
45. Enter interface view.
46. Configure the device to
operate in NTP broadcast
client mode.
ntp-service broadcast-client N/A
Configuring the broadcast server
Step Command Remarks
47. Enter system view. system-view N/A
This command enters the view of
the interface for sending NTP
broadcast messages.
interface interface-type
interface-number
48. Enter interface view.
A broadcast server can
synchronize broadcast clients only
when its clock has been
synchronized.
49. Configure the device to
operate in NTP broadcast
server mode.
ntp-service broadcast-server
[ authentication-keyid keyid |
version number ] *
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.
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