173 lines
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HTML
173 lines
11 KiB
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<meta name="DC.Title" content="Determine problems with Telnet" />
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<meta name="abstract" content="You can read this topic for diagnostic information, including a flow chart for server problem analysis, and a list of materials needed when reporting Telnet problems." />
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<meta name="description" content="You can read this topic for diagnostic information, including a flow chart for server problem analysis, and a list of materials needed when reporting Telnet problems." />
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<title>Determine problems with Telnet</title>
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<body id="rzaiwdetprobtelnet"><a name="rzaiwdetprobtelnet"><!-- --></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">Determine problems with Telnet</h1>
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<div><p>You can read this topic for diagnostic information, including a
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flow chart for server problem analysis, and a list of materials needed when
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reporting Telnet problems.</p>
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<p>Use this flow chart after using the flow chart for general TCP/IP problems.
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If a problem is detected when using the iSeries™ Telnet server, use the flow chart
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to identify the cause. The cause lists that follow the flow chart help identify
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potential problems.</p>
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<br /><img src="rzaiw522.gif" alt="Telnet problem analysis
flow chart" /><br /><div class="section" xml:lang="en-us" id="rzaiwdetprobtelnet__CauseListA"><a name="rzaiwdetprobtelnet__CauseListA"><!-- --></a><h4 class="sectiontitle">Cause list A</h4><ol><li>Verify that the Telnet server jobs are active and that Telnet service
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is assigned to a valid nonrestricted port. <ol type="a"><li>To verify that the QTVTELNET and QTVDEVICE jobs are active in the QSYSWRK
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subsystem, complete the following steps:<ol type="i"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Work
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Management</span></span>.</li>
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<li>Right-click <span class="uicontrol">Active Jobs</span>, and look to see if QTVTELNET
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and QTVDEVICE are active. If they are, continue with step 1c.</li>
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</ol>
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</li>
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<li>If these jobs are not active, complete the following steps to start these
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jobs:<ol type="i"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.</li>
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<li>Right-click <span class="uicontrol">Telnet</span> and select <span class="uicontrol">Start</span>.</li>
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</ol>
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</li>
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<li>To verify that Telnet service is assigned to a valid port, complete the
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following steps: <ol type="i"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.</li>
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<li>Right-click <span class="uicontrol">Connections</span> and select <span class="uicontrol">Open</span>.</li>
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<li>Look for Telnet.</li>
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</ol>
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</li>
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<li>For printers, insure that subsystem QSPL is active.</li>
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<li>Check for port restrictions by going to menu CFGTCP and selecting option <strong>4</strong> (Work
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with TCP/IP port restrictions).</li>
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</ol>
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</li>
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<li>Verify that the devices system value on the iSeries server is properly set to allow
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the Telnet server to automatically create virtual devices.</li>
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<li>Verify that the network connection between the iSeries server and the Telnet client
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is active by using the Ping utility in iSeries Navigator. If the connection
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is not active, see your network administrator.</li>
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<li>Verify that the virtual devices on the iSeries server that are used by Telnet
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are defined to a subsystem under which the interactive Telnet jobs should
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run.<ol type="a"><li>To see which workstation entries are defined to a subsystem, complete
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the following steps:<ol type="i"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Work
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Management</span></span>.</li>
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<li>Right-click <span class="uicontrol">Subsystems</span> and select <span class="uicontrol">Open</span>.</li>
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</ol>
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</li>
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<li>Use the Add Work Station Entry (ADDWSE) command to define work stations
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to a subsystem. For example, you could use the following command to allow
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all work station types to run under the QINTER subsystem:<pre> ADDWSE SBSD(QINTER) WRKSTNTYPE(*ALL)</pre>
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</li>
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</ol>
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</li>
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<li>Verify that the interactive subsystem (QINTER) is active. Telnet connections
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fail if the interactive subsystem is not active. In this situation, the system
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does not write error messages to the QTVTELNET job log or the QTVDEVICE job
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log to show you the problem.<p>To verify that the subsystem is active, complete
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the following steps:</p>
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<ol type="a"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Work
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Management</span></span>.</li>
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<li>Right-click <span class="uicontrol">Subsystems</span> and select <span class="uicontrol">Open</span>.</li>
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<li>Verify that the subsystem is active.</li>
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</ol>
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</li>
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<li>If you are operating in VTxxx full-screen mode, verify that your local
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VTxxx client configuration specifies autowrap. When autowrap is on, the system
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will automatically wrap lines at column 80.</li>
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<li>Check for a Telnet exit program registered to exit point QIBM_QTG_DEVINIT,
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format INIT0100, using the work with registration information (WRKREGINF)
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command. If there is a registered user exit program, check the Telnet server
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job log with job name QTVDEVICE for any errors related to that program. If
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errors exist, correct the errors in the exit program or remove the exit program
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with the remove exit program (RMVEXITPGM) command.</li>
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<li>Ensure that your client is attempting to use the correct port to connect
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to Telnet.<p>To determine the port that Telnet service is assigned to, complete
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the following steps:</p>
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<ol type="a"><li>Start iSeries Navigator
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and expand <span class="menucascade"><span class="uicontrol">your iSeries server</span> > <span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.</li>
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<li>Right-click <span class="uicontrol">Connections</span> and select <span class="uicontrol">Open</span>.</li>
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<li>Look for Telnet.</li>
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</ol>
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</li>
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<li>Use the CFGTCP command to verify that the port your client is attempting
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to connect on is not restricted. Also look in the QTVTELNET job log for messages
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that indicate that the port that you are trying to use is restricted.</li>
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<li>When attempting to connect using SSL Telnet, make sure that you have installed
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the Digital Certificate Manager (DCM) and one of the IBM<sup>®</sup> cryptographic provider products. This
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is in addition to the above items listed. Also, ensure that a valid, unexpired
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certificate is assigned to the Telnet server (QIBM_QTV_TELNET_SERVER).</li>
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</ol>
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</div>
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<div class="section" xml:lang="en-us" id="rzaiwdetprobtelnet__CauseListB"><a name="rzaiwdetprobtelnet__CauseListB"><!-- --></a><h4 class="sectiontitle">Cause list B</h4><ol><li>Verify your authority to the virtual display device. If you receive message <tt>CPF1110</tt> when
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attempting to sign on the iSeries server, you are not authorized to the virtual
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display device. When the iSeries Telnet server creates virtual devices, the
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QCRTAUT system value is used to determine the authority granted to user <samp class="codeph">*PUBLIC</samp>.
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This system value should be <samp class="codeph">*CHANGE</samp> to allow any user to
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sign on using Telnet.</li>
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<li>Verify that the QLMTSECOFR system value is correct if you are the security
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officer or have *SECOFR authority.</li>
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</ol>
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</div>
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<div class="section" xml:lang="en-us" id="rzaiwdetprobtelnet__CauseListC"><a name="rzaiwdetprobtelnet__CauseListC"><!-- --></a><h4 class="sectiontitle">Cause list C</h4><ol><li>Verify your word processing choice. If you experience problems when using IBM OfficeVision<sup>®</sup> or
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the Work with Folders (WRKFLR) command, you might need to change your configuration
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so that the Office Adapted Editor is used instead of the Standard Editor.
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To do this, have your system administrator change your word-processing choice
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in the environment information associated with your office user ID.</li>
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<li>If you are operating in VTxxx full-screen mode, verify that your local
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VTxxx client configuration specifies autowrap. When autowrap is on, the system
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will automatically wrap lines at column 80.</li>
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<li>If characters do not display properly for your VTxxx session, verify that
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the correct mapping tables are in use for your session.</li>
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<li>If your VTxxx client beeps every time you press a key, your keyboard might
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be locked.</li>
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<li>Check the QTVTELNET job log and the QTVDEVICE job log for error messages
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on the iSeries server.</li>
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</ol>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaiw522_desc.htm">Description: Telnet problem analysis flow chart</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzaiwping.htm">Ping your host server</a></strong><br />
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<span>You can use the Ping utility in iSeries Navigator
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to test your TCP/IP connection.</span></li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiwtrouble.htm" title="This topic provides helpful information to assist you in troubleshooting and correcting problems with Telnet.">Troubleshoot Telnet problems</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="../rzakz/rzakzdevicesoverview.htm">Devices system value</a></div>
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<div><a href="rzaiwvtxxxconsiderations.htm" title="You should be aware of the considerations when using VTxxx emulation.">VTxxx full screen considerations</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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