SNTP Global Configuration

Use the SNTP Global Configuration page to view and adjust SNTP (Simple Network Time Protocol) parameters.

To display this page, click System > Advanced Configuration > SNTP > Global Configuration in the navigation menu.

SNTP Global Configuration Fields

Field	Description
Client Mode	Use the drop-down menu to specify the SNTP client mode, which is one of the following modes: Disable: SNTP is not operational. No SNTP requests are sent from the client nor are any received SNTP messages processed. Unicast: SNTP operates in a point to point fashion. A unicast client sends a request to a designated server at its unicast address and expects a reply from which it can determine the time and, optionally the round-trip delay and local clock offset relative to the server. Broadcast: SNTP operates in the same manner as multicast mode but uses a local broadcast address instead of a multicast address. The broadcast address has a single subnet scope while a multicast address has Internet wide scope.
Port	Specifies the local UDP port to listen for responses/broadcasts. The allowed range is 1 to 65535. The default value is 123.
Unicast Poll Interval	Specifies the number of seconds between unicast poll requests expressed as a power of two when configured in unicast mode. The allowed range is 6 to 10. The default value is 6.
Broadcast Poll Interval	Specifies the number of seconds between broadcast poll requests expressed as a power of two when configured in broadcast mode. Broadcasts received prior to the expiry of this interval are discarded. The allowed range is 6 to 10. The default value is 6.
Unicast Poll Timeout	Specifies the number of seconds to wait for an SNTP response when configured in unicast mode. The allowed range is 1 to 30. The default value is 5.
Unicast Poll Retry	Specifies the number of times to retry a request to an SNTP server after the first time-out before attempting to use the next configured server when configured in unicast mode. The allowed range is 0 to 10. The default value is 1.
Number of Servers Configured	Specifies the number of current valid unicast server entries configured for this client.

If you change any of the parameters, click Submit to apply the changes to the system. If you want the switch to retain the new values across a power cycle, you must save the configuration.

Published October 2018prev | next

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