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System Operation as an NTP Client

To synchronize to the clock of a server, the system must receive time information from NTP servers recurrently. The way the system receives such information depends on how you configure it:

If you configure the system to poll NTP servers, it sends time requests to the servers periodically. NTP servers receive the requests, add time information to the messages, and send replies to the system.
If you configure the system as a broadcast client, it receives NTP broadcasts from servers periodically. The broadcasts include time information from the servers.

By default, NTP servers respond to the interface from which an NTP request originated. You can direct responses from all NTP servers to one interface on the system, or from a specific NTP server to a specific interface.

Note: When the system is not configured as either an NTP client or an NTP server, it responds to NTP requests with an invalid stratum number.

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