NTP Client

An NTP client gets time responses from an NTP server or servers, and uses the information to calibrate its clock. This consists of the client determining how far its clock is off and adjusting its time to match that of the server. The maximum error is determined based on the round-trip time for the packet to be received.

The NTP client can be enabled when we enter the ntp command and configure one or more NTP servers/peers.

The NTP client maintains the server and peer state information as association. The server and peer association is mobilized at the startup or whenever user configures. The statically configured server/peer associations are not demobilized unless user removes the configuration. The symmetric passive association is mobilized upon arrival of NTP packet from peer which is not statically configured. The associations will be demobilized on error or time-out.