Configuring ntp broadcast mode, Configuring a broadcast client – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
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Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Specify a symmetric-passive
peer for the device.
ntp-service unicast-peer
{ ip-address | peer-name }
[ authentication-keyid keyid |
priority | source-interface
interface-type interface-number |
version number ] *
By default, no symmetric-passive
peer is specified.
NOTE:
•
In symmetric mode, use any NTP configuration command in
Configuring NTP operation modes
enable NTP; otherwise, a symmetric-passive peer will not process NTP messages from a
symmetric-active peer.
•
In the ntp-service unicast-peer command,
ip-address must be a unicast address, rather than a
broadcast address, a multicast address or the IP address of the local clock.
•
When the source interface for NTP messages is specified by the source-interface keyword, the source IP
address of the NTP messages is configured as the primary IP address of the specified interface.
•
Typically, at least one of the symmetric-active and symmetric-passive peers has been synchronized;
otherwise the clock synchronization will not proceed.
•
You can configure multiple symmetric-passive peers by repeating the ntp-service unicast-peer
command.
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.
For devices operating in broadcast mode, configure both the server and clients. Because an interface
must be specified on the broadcast server for sending NTP broadcast messages and an interface also
must 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
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface interface-type
interface-number
Enter the interface used to receive
NTP broadcast messages.
3.
Configure the device to
operate in NTP broadcast
client mode.
ntp-service broadcast-client
N/A