NTP server

An NTP server provides the correct network time on your device using the Network time protocol (NTP). Network Time Protocol can be used to synchronize the time on devices across a network. An NTP time server is used to obtain the correct time from a time source and adjust the local time in each connecting device.

The NTP server functionality is enabled when you use the ntp command.

When the NTP server is enabled, it starts listening on the NTP port for client requests and responds with the reference time. Its Stratum number will be the upstream time server's Stratum + 1. The Stratum 1 NTP server is the time server that is directly attached to the authoritative time source.

The device cannot be configured as primary time server with Stratum 1. It can be configured as secondary time server with Stratum 2 to 15 to serve the time using the local clock.

The NTP server is stateless and does not maintain any NTP client information.