Configuring Basic NTP Functions

Configuring the NTP Primary Clock

If you want to configure a FW to provide a primary NTP clock, do as follows on the FW functioning as the NTP server.

Configuring a Client Clock Updating Interval

When the server clock is changed, the client clock should be synchronized to the server clock within the configured time interval.

Configuring the Unicast Client/Server Mode

In client/server mode, the clock on the client synchronizes with the master clock on the server.

Configuring the Peer Mode

This part describes how to configure the NTP peer mode. In this mode, clocks on the two peers synchronize with each other based on the stratum. Each side can send the clock synchronization request message to the peer and reply the clock synchronization request message from the peer.

Configuring the Broadcast Mode

This part describes how to configure the NTP broadcast mode to synchronize clocks in a broadcast domain.

Configuring the Multicast Mode

This part describes how to configure the NTP multicast mode to synchronize clocks in a multicast domain.

Configuring the Manycast Mode

This part describes how to configure the NTP manycast mode to synchronize clocks in a manycast domain.

Disabling the Interface From Receiving NTP Packets

To prevent a device from synchronizing the clock on the specified server, you can disable the specified interface on the device from receiving NTP packets.

Disabling the NTP Service

To prevent a device from synchronizing the clock with IPv4 or IPv6 external servers or peers, or it not required to provide the reference clock source for IPv4 or IPv6 external clients, you can disable NTP IPv4 or IPv6 service.