83 lines
6.6 KiB
HTML
83 lines
6.6 KiB
HTML
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<title>LANCNNTMR and LANCNNRTY</title>
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<body id="rzajylancnntmrandlancnnrty"><a name="rzajylancnntmrandlancnnrty"><!-- --></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">LANCNNTMR and LANCNNRTY</h1>
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<div><p>The LAN connection timer (LANCNNTMR) and LAN connection retry (LANCNNRTY)
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parameters of your controller description define the frequency and persistence
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of polling the remote station to establish a connection</p>
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<div class="section"><p>LANCNNTMR specifies how long to wait before polling again. LANCNNRTY
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specifies how many times to poll. If the system receives no response from
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the remote station after polling LANCNNRTY times, the following occurs:</p>
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<ul><li>The user is notified that contact with the station was unsuccessful.</li>
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<li>The system places the controller description in answer mode.</li>
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<li>If the remote station signals your system to retry your connection inquiry,
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your system attempts to establish connection again.</li>
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</ul>
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<p>The default *CALC value for LANCNNTMR is 7 seconds. The default *CALC
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value for LANCNNRTY is 10.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Performance considerations</h4><p>The default values of
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the parameters are designed for a single LAN and might cause a connection
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failure when you access a remote station through a remote bridge. The bridge
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might slow data traffic enough that the connection timer expires before the
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remote station's response reaches you. If this is the case, you should increase
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the values of LANCNNTMR and LANCNNRTY.</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="rzajysnaoveratmtimingissues.htm">SNA over Ethernet timing parameters</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="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>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rzajycreatingcontrollerdescription.htm">Create the SNA controller description</a></div>
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<div><a href="rzajychangingtimingparameters.htm" title="Do these steps to change the LAN timing parameters.">Changing timing parameters</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="rzajylanrsptmrandlanfrmrty.htm" title="The LAN response timer (LANRSPTMR) and the LAN frame retry (LANFRMRTY) parameters in your controller description determine how soon and how often the system retransmits a frame.">LANRSPTMR and LANFRMRTY</a></div>
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<div><a href="rzajylanacktmrandlanackfrq.htm" title="Your SNA controller description includes the LAN acknowledgment timer (LANACKTMR) and the LAN acknowledgment frequency (LANACKFRQ) parameters. They work together to determine how often to send an acknowledgment to the remote station.">LANACKTMR and LANACKFRQ</a></div>
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<div><a href="rzajylaninactmr.htm" title="The LAN inactivity timer (LANINACTMR) parameter of your SNA controller description determines how long your system waits before requesting a response from the remote station. Your system uses the request to test if the remote station is still accessible.">LANINACTMR</a></div>
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<div><a href="rzajylanmaxout.htm" title="The Maximum outstanding data frames (LANMAXOUT) parameter of your SNA controller description specifies how many frames your system sends before waiting to receive an acknowledgment.">LANMAXOUT</a></div>
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<div><a href="rzajylanwdwstp.htm" title="The LAN window step (LANWDWSTP) parameter of your SNA controller description determines whether the number of outstanding frames are reduced during network congestion.">LANWDWSTP</a></div>
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<div><a href="rzajylanaccpty.htm" title="The LAN access priority (LANACCPTY) parameter of your SNA controller description determines a token's priority.">LANACCPTY</a></div>
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</div>
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</div>
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