128 lines
7.5 KiB
HTML
128 lines
7.5 KiB
HTML
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<meta name="DC.Title" content="Troubleshoot PPP" />
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<meta name="abstract" content="If you experience PPP connection problems, you can use this checklist to gather error information. This checklist can help you identify error symptoms and resolve PPP connection problems." />
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<meta name="description" content="If you experience PPP connection problems, you can use this checklist to gather error information. This checklist can help you identify error symptoms and resolve PPP connection problems." />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Troubleshoot PPP</title>
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</head>
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<body id="rzaiyrzaiytrouble"><a name="rzaiyrzaiytrouble"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Troubleshoot PPP</h1>
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<div><p>If you experience PPP connection problems, you can use this checklist
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to gather error information. This checklist can help you identify
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error symptoms and resolve PPP connection problems.</p>
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<div class="section"><p>Current and relevant information about program temporary fixes
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(PTFs) and troubleshooting is documented on the <a href="http://www.iseries.ibm.com/tcpip/" target="_blank">iSeries™ server
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TCP/IP home page</a> <img src="www.gif" alt="Link outside Information Center" />. This link provides the latest information that
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supplements and overrides the information that is contained in this topic.</p>
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</div>
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<div class="section"> <ol><li>Required supporting material: <ul><li>Remote host type, operating system, and level</li>
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<li>iSeries server
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host operating system level</li>
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<li><img src="./delta.gif" alt="Start of change" />All output files that are saved in an output queue with the
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same name as the profile<img src="./deltaend.gif" alt="End of change" /></li>
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<li><img src="./delta.gif" alt="Start of change" />Job logs for QTPPPCTL and QTPPPL2TP (if an L2TP profile)<img src="./deltaend.gif" alt="End of change" /></li>
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<li>Connection script, if used in your environment</li>
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<li>Status of connection profile before and after the connection fails</li>
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</ul>
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</li>
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<li>Recommended supporting material: <ul><li>Line description</li>
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<li>Connection profile <p>Option 6 from WRKTCPPTP prints the profile settings.</p>
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</li>
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<li>Modem type and model</li>
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<li>Modem command strings</li>
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<li>Communications trace</li>
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</ul>
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</li>
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</ol>
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</div>
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<div class="section"><p>The ITSO Redbook <a href="http://www.redbooks.ibm.com/abstracts/sg245190.html" target="_blank">TCP/IP for iSeries server: More Cool Things Than Ever (SG24-5190)</a> <img src="rbpdf.gif" alt="Link to PDF" /> covers the
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following PPP problems. It also provides detailed problem resolution information.</p>
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</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. PPP problems from ITSO Redbook</caption><thead align="left"><tr><th align="center" valign="top" id="d0e82">Problem</th>
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<th align="center" valign="top" id="d0e84">Solution</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e82 "><p><strong>Modem hardware configuration</strong></p>
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<p>Wrong configuration
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of dip-switches and other hardware settings</p>
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</td>
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<td valign="top" headers="d0e84 ">Make sure that the modem is configured for the correct
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framing type. This can be either <em>Asynchronous</em> or <em>Synchronous</em>.
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Refer to the modem manual for more information.</td>
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</tr>
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<tr><td valign="top" headers="d0e82 "><p><strong>Modem AT commands</strong></p>
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<p>The modem you are
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trying to use is not in the predefined list of modems in iSeries Navigator. </p>
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</td>
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<td valign="top" headers="d0e84 ">Create a new modem.</td>
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</tr>
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<tr><td valign="top" headers="d0e82 "><p><strong>PPP users and passwords</strong></p>
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<p>You are getting
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user name and password errors when attempting a PPP connection.</p>
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</td>
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<td valign="top" headers="d0e84 "><ul><li>Ensure that the user ID and password are entered using the same case.</li>
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<li>Ensure that the authentication protocol used by the peers is the same.</li>
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<li>Do not use PAP at one peer, while the other peer is configured as CHAP.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e82 "><p><strong>PPP lines for starting a connection profile</strong></p>
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<p>Identified
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PPP lines are used by the same hardware resource.</p>
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</td>
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<td valign="top" headers="d0e84 ">Remember to vary off other lines using the same hardware
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resource.</td>
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</tr>
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<tr><td valign="top" headers="d0e82 "><p><strong>PPP protocol</strong></p>
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<p>Connection errors can occur
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due to misconfiguration of the PPP protocol.</p>
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</td>
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<td valign="top" headers="d0e84 ">Investigating the lower-levels of the PPP protocol may
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be necessary in some situations where the peers are unable to communicate
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with each other due to a configuration error. If the PPP log or the job log
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of the PPP job does not show any indication of the problem, you can investigate
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the problem by using the communications trace function. </td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiygetstart.htm" title="Point-to-Point Protocol (PPP) is an Internet standard for transmitting data over serial lines.">Remote Access Services: PPP connections</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzaiycfgmodem.htm" title="For your analog PPP connections, you can use an external modem, an internal modem or an ISDN terminal adapter. A modem provides you with analog connection capabilities (leased and switched lines). Modem descriptions for the most popular modems have been defined for the iSeries server.">Configure your modem for PPP</a></div>
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<div><a href="rzaiyrzaiycfgmodem.htm" title="You can find how to configure a new modem in this topic.">Configure a new modem</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzaiycfgref.htm" title="Listed here are IBM Redbooks (in PDF format) and Web sites that relate to the PPP topic. You can view or print any of the PDFs.">Related information for PPP</a></div>
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</div>
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</div>
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</body>
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</html>
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