<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html lang="en-us" xml:lang="en-us"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="security" content="public" /> <meta name="Robots" content="index,follow" /> <meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' /> <meta name="DC.Type" content="task" /> <meta name="DC.Title" content="Synchronize system times" /> <meta name="abstract" content="Synchronize system times on your network." /> <meta name="description" content="Synchronize system times on your network." /> <meta name="DC.Relation" scheme="URI" content="rzakhmanage.htm" /> <meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Format" content="XHTML" /> <meta name="DC.Identifier" content="rzakhsync" /> <meta name="DC.Language" content="en-us" /> <!-- All rights reserved. Licensed Materials Property of IBM --> <!-- US Government Users Restricted Rights --> <!-- Use, duplication or disclosure restricted by --> <!-- GSA ADP Schedule Contract with IBM Corp. --> <link rel="stylesheet" type="text/css" href="./ibmdita.css" /> <link rel="stylesheet" type="text/css" href="./ic.css" /> <title>Synchronize system times</title> </head> <body id="rzakhsync"><a name="rzakhsync"><!-- --></a> <!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script> <h1 class="topictitle1">Synchronize system times</h1> <div><p>Synchronize system times on your network.</p> <div class="p"><p>Network authentication service uses 5 minutes (300 seconds) as the default for the maximum amount of time that system times can be different. You can change the clock difference by working with the network authentication service properties. </p> <p>Before synchronizing system times, use the QTIMZON system value to set your system time according to your time zone. You can synchronize these system times by changing the time that is set on the Kerberos server or use the QTIME system value to change the iSeries™ system time. However, to keep system times in a network synchronized, you should configure Simple Network Time Protocol (SNTP). SNTP allows multiple systems to base their time on a single time server.</p> </div> <div class="p"><span>To configure SNTP, complete the following:</span><ul><li>To configure <a href="../rzakt/rzaktkickoff.htm">SNTP</a> on an iSeries, enter <tt>CHGNTPA</tt> on a command line.</li> <li>To configure SNTP on Windows<sup>®</sup> systems, use <strong>NET HELP TIME</strong> to display configuration information for a SNTP server.</li> </ul> </div> </div> <div> <div class="familylinks"> <div class="parentlink"><strong>Parent topic:</strong> <a href="rzakhmanage.htm" title="Manage network authentication service by requesting tickets, working with key table files, and administering host name resolution. You can also work with credentials files and back up configuration files.">Manage network authentication service</a></div> </div> </div> </body> </html>