<?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="concept" /> <meta name="DC.Title" content="Troubleshooting tips" /> <meta name="abstract" content="These troubleshooting tips enable you to solve basic TCP/IP problems." /> <meta name="description" content="These troubleshooting tips enable you to solve basic TCP/IP problems." /> <meta name="DC.Relation" scheme="URI" content="rzakutools.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakuservertable.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakujobsjoblogs.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakufilterrules.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakustrnwk.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakuvryon.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakuvfylpar.htm" /> <meta name="DC.Relation" scheme="URI" content="rzakuip6trb.htm" /> <meta name="copyright" content="(C) Copyright IBM Corporation 1997, 2006" /> <meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1997, 2006" /> <meta name="DC.Format" content="XHTML" /> <meta name="DC.Identifier" content="toolstips" /> <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>Troubleshooting tips</title> </head> <body id="toolstips"><a name="toolstips"><!-- --></a> <!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script> <h1 class="topictitle1">Troubleshooting tips</h1> <div><p>These troubleshooting tips enable you to solve basic TCP/IP problems. </p> <p>You can find out how to check logs and verify that your interfaces and other network components are active.</p> <p>If you are experiencing problems related to TCP/IP, you should check for error messages in the QTCP message queue located in library QUSRSYS. Many errors relating to TCP/IP functions get logged in this message queue. To display the QTCP messages, enter <kbd class="userinput">DSPMSG QUSRSYS/QTCP</kbd> on the command line.</p> </div> <div> <ul class="ullinks"> <li class="ulchildlink"><strong><a href="rzakuservertable.htm">Server table</a></strong><br /> You can use this server table as a reference to find out how servers, server jobs, job descriptions, and subsystems are mapped to one another.</li> <li class="ulchildlink"><strong><a href="rzakujobsjoblogs.htm">Check jobs, job logs, and message logs</a></strong><br /> You can view jobs, job logs, and messages to identify problems and make adjustments to solve them.</li> <li class="ulchildlink"><strong><a href="rzakufilterrules.htm">Check for active filter rules</a></strong><br /> <span>You can find out if filter rules are limiting your communication.</span></li> <li class="ulchildlink"><strong><a href="rzakustrnwk.htm">Verify system startup considerations for networking</a></strong><br /> Learn how to start subsystems, TCP/IP, interfaces, and servers in the correct order and learn how to locate problems associated with startup.</li> <li class="ulchildlink"><strong><a href="rzakuvryon.htm">Vary on lines, controllers, and devices</a></strong><br /> Let TCP/IP vary on your lines, controllers, and devices automatically.</li> <li class="ulchildlink"><strong><a href="rzakuvfylpar.htm">Verify the logical partition configuration</a></strong><br /> You might need to verify that the logical partition (LPAR) configuration is correct.</li> <li class="ulchildlink"><strong><a href="rzakuip6trb.htm">Troubleshoot IPv6–related problems</a></strong><br /> Use these tips to troubleshoot IPv6.</li> </ul> <div class="familylinks"> <div class="parentlink"><strong>Parent topic:</strong> <a href="rzakutools.htm" title="i5/OS offers several tools and techniques for troubleshooting TCP/IP on your server and the network.">Troubleshooting tools and techniques</a></div> </div> </div> </body> </html>