Ntp-Service Broadcast-Client - H3C S5830V2 Series Command Reference Manual

Usage guidelines
In a network where there is a high security demand, the NTP authentication feature must be enabled for
a system running NTP. This feature enhances the network security by means of the client-server key
authentication, which prohibits a client from synchronizing to a device that has failed the authentication.
When the NTP authentication key is configured, use the ntp-service reliable authentication-keyid
command to configure the key as a trusted key. The key automatically changes to untrusted after you
delete the key. In this case, you do not need to execute the undo ntp-service reliable authentication-keyid
command.
A maximum of 128 keys can be set for the device by repeatedly executing the command.
Examples
# Set an MD5 authentication key, with the key ID of 10 and key value of BetterKey, in simple text.
<Sysname> system-view
[Sysname] ntp-service authentication enable
[Sysname] ntp-service authentication-keyid 10 authentication-mode md5 simple BetterKey
Related commands
ntp-service authentication enable
•
ntp-service reliable authentication-keyid
•

ntp-service broadcast-client

Use the ntp-service broadcast-client command to configure the device to operate in NTP broadcast client
mode and use the current interface to receive NTP broadcast packets.
Use the undo ntp-service broadcast-client command to remove the configuration.
Syntax
ntp-service broadcast-client
undo ntp-service broadcast-client
Default
The device does not operate in any NTP association mode.
Views
VLAN interface view
Predefined user roles
network-admin
Usage guidelines
After you configure this command, the device listens to NTP messages sent by the NTP broadcast server
and is synchronized based on the received NTP messages.
If you have configured the device to operate in broadcast client mode on an interface with this command,
do not add the interface to any aggregate group. To add the interface to an aggregate group, remove
the configuration of the command.
Examples
# Configure the device to operate in broadcast client mode and receive NTP broadcast messages on
VLAN-interface 1.
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