Configuration Guide Configuring NTP
Configuring a Trusted Key ID for an External Reference Clock Source
Run the ntp server command to specify an external reference source and the trusted key of this clock source as well.
13.3.3 NTP Access Control
Working Principle
Provide a minimum security measure by using an ACL.
Related Configuration
Configuring the Access Control Rights for NTP Services
By default, there is no access control right for NTP.
Run the ntp access-group command to configure the access control rights for NTP.
13.4 Configuration
Configuring Basic Functions
of NTP
(Mandatory) It is used to enable NTP. After NTP is enabled, a device works in the
external clock reference mode.
Configures an NTP server.
Automatically updates a hardware clock.
(Optional) It is used to configure a device to the local clock reference mode.
Configures the NTP master clock.
(Optional) It is used to disable NTP.
Disables all functions of NTP and clears all
NTP configurations.
Disables receiving of NTP packets from a
specified interface.
Configuring NTP Security
Authentication
(Optional) It is used to prevent unreliable clock sources from performing time
synchronization interference on a device.
Enables a security authentication
mechanism.
Configures a global authentication key.
Configures a trusted key for time
synchronization.
Configures a trusted key for an external
reference clock source.