83 lines
5.3 KiB
HTML
83 lines
5.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Title" content="Connection failure and controller descriptions" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Connection failure and controller descriptions</title>
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</head>
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<body id="rzajyconfailureandcntrlrdesc"><a name="rzajyconfailureandcntrlrdesc"><!-- --></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">Connection failure and controller descriptions</h1>
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<div><div class="section"><p>Sometimes an incorrectly configured controller description can
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cause a connection failure. The problem source could involve the incorrect
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configuration of the adapter address, source service access point (SSAP),
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or destination service access point (DSAP) parameters. </p>
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</div>
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<div class="section"><p>For more information about how these parameters influence a successful
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connection, see LAN device identification. For other causes of a connection
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failure, see LAN device connection initiation.</p>
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</div>
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<div class="section"></div>
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<div class="section"><h4 class="sectiontitle">The remote system does not connect</h4><p>If your controller
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description uses dial mode, it is not unusual for the system to receive message
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CPA58E0 (Controller not replying) or CPA57EF (Contact not successful). Remote
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systems or controller descriptions that do not vary on can cause one of these
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messages to appear.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Your server does not connect</h4><p>If your controller
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description uses answer mode, you might receive the message CPI591A (Controller
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is varied off or not recognized by local system). The following situations
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can cause this message to appear:</p>
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<ul><li>The connection requested by the remote system does not exist on the local
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server. The local server searches for this connection (that is indicated by
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combining the local adapter address, the DSAP, and the SSAP) in all varied
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on controller descriptions.</li>
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<li>The controller description does not refer to the line description that
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could answer the call.</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Solutions</h4><ul><li>On either side of the connection, verify that the controller description
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has the correct combination of adapter address, SSAP, and DSAP.</li>
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<li>In the Switched line list field of the controller description, enter the
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line description that can accept the incoming call. .</li>
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<li>Vary on the correct controller description (use the Work with Configuration
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Status (WRKCFGSTS) command to vary on the controller).</li>
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<li>Verify that the local and remote adapters are wired into the network correctly.</li>
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</ul>
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<p>For information about the relationship between line descriptions and
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controller descriptions, see Connect LAN devices.</p>
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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="rzajytroubleshootingethernet.htm" title="Having problems with your server and connections? Get tips on why connections might fail, why frames are dropped, or why PCs cannot connect to your system.">Troubleshoot Ethernet</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="rzajylandeviceidentification.htm" title="Learn about the types of verification used during the connection process.">LAN device identification</a></div>
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<div><a href="rzajylandeviceconinitiation.htm" title="In an SNA environment you can determine which server initiates the connection request and which server waits for an incoming connection request.">LAN device connection initiation</a></div>
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<div><a href="rzajyconnectinglandevices.htm" title="The correct line and controller descriptions will help you achieve successful connections.">Connect LAN devices</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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