Simple Network Time Protocol

Simple Network Time Protocol (SNTP) is a time-maintenance application that you can use to synchronize hardware in a network.

You can use the i5/OS^® operating system as an SNTP server, SNTP client, or both. You can specify an amount of time that clients can vary from the time provided by a time server and allow for adjustments to keep the clocks synchronized. This function is particularly important in the use of network authentication service.

SNTP is a tool that you can use as part of your time management strategy.

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• SNTP concepts
  Simple Network Time Protocol (SNTP) is used to keep device clocks synchronized. By using timestamps that are kept synchronized, SNTP is useful for tracking processes and for interactions between systems.

• Scenario: Synchronizing clocks with i5/OS
  This scenario demonstrates how to use the i5/OS operating system as both an SNTP server and an SNTP client to synchronize clocks in your network.

• Configuring SNTP
  You can work with Simple Network Time Protocol (SNTP) settings from iSeries™ Navigator or by using the Change SNTP Attributes (CHGNTPA) command on the character-based interface.

• Troubleshooting SNTP
  You have various options to solve problems related to Simple Network Time Protocol (SNTP). Here are some common problems that your system might encounter when you adjust time using SNTP.

Related concepts
Network authentication service Time management