Configuring SNTP application

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You can work with SNTP server, SNTP client and NTP client settings from System i® Navigator or work with SNTP client and SNTP server settings by using the Change SNTP Attributes (CHGNTPA) command on the character-based interface.

You can use an SNTP or NTP client to adjust system time. Because most applications use the system time, those applications obtain accurate time from the system clock.

The options that you see in System i Navigator depend on the version of the IBM® i operating system that runs on your system and the version of IBM i Access for Windows that is used. From System i Navigator, click Help or press F1 for help that describes the procedures for your version.

To work with SNTP application, follow these steps:

  1. From System i Navigator, expand your system > Network > Servers > TCP/IP.
  2. Right-click SNTP and select Properties.
    Click the following tabs to set the parameters.
    Select this tab Then do this
    General Specify whether to start SNTP when TCP/IP starts. You can set this preference for the server and the client separately.
    Client Specify the logging preference and client type. For SNTP client, specify up to three time servers that the client can poll,also specify the poll interval and adjustment preferences. For NTP client, specify up to ten time servers that the client can poll, also specify the poll intervals and adjustment preferences.
    Server Specify your logging preference. By default, the SNTP server will serve the system time when you start it. You might want to select Server must be synchronized before valid time is served to specify that you want your system to act as a client to obtain time from another source before serving time to other clients.
Note: If you use the SNTP application through a firewall, you might need to update the firewall configuration to allow the passing of UDP packets on port 123.