69 lines
4.6 KiB
HTML
69 lines
4.6 KiB
HTML
|
<?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="The LANRSPTMR and LANFRMRTY parameters" />
|
||
|
|
<meta name="abstract" content="In your Systems Network Architecture (SNA) controller description, the LAN response timer (LANRSPTMR) and the LAN frame retry (LANFRMRTY) parameters work together to determine how soon and how often the system retransmits a frame." />
|
||
|
|
<meta name="description" content="In your Systems Network Architecture (SNA) controller description, the LAN response timer (LANRSPTMR) and the LAN frame retry (LANFRMRTY) parameters work together to determine how soon and how often the system retransmits a frame." />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzajysnaoveratmissues.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzajychangingtimingparameters.htm" />
|
||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
|
||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
|
||
|
|
<meta name="DC.Format" content="XHTML" />
|
||
|
|
<meta name="DC.Identifier" content="lanrsptmr_and_lanfrmrty" />
|
||
|
|
<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>The LANRSPTMR and LANFRMRTY parameters</title>
|
||
|
|
</head>
|
||
|
|
<body id="lanrsptmr_and_lanfrmrty"><a name="lanrsptmr_and_lanfrmrty"><!-- --></a>
|
||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
||
|
|
<h1 class="topictitle1">The LANRSPTMR and LANFRMRTY parameters</h1>
|
||
|
|
<div><p>In your Systems Network Architecture (SNA) controller description,
|
||
|
|
the LAN response timer (LANRSPTMR) and the LAN frame retry (LANFRMRTY) parameters
|
||
|
|
work together to determine how soon and how often the system retransmits a
|
||
|
|
frame.</p>
|
||
|
|
<p>LANRSPTMR defines how long to wait before retransmitting
|
||
|
|
a frame to the remote station. LANFRMRTY specifies how many times to retransmit
|
||
|
|
a frame. A system retransmits a frame when one of the following situations
|
||
|
|
occurs:</p>
|
||
|
|
<ul><li>A frame was lost or damaged.</li>
|
||
|
|
<li>The remote station does not respond because it is busy.</li>
|
||
|
|
<li>The remote station is waiting to acknowledge the frame with an information
|
||
|
|
frame of its own. (See <a href="rzajylanacktmrandlanackfrq.htm#lanacktmr_and_lanackfrq">LANACKTMR
|
||
|
|
and LANACKFRQ</a> for more information about the acknowledge timer).</li>
|
||
|
|
</ul>
|
||
|
|
<p>After your system retransmits a frame a number of times (based on the number
|
||
|
|
that is indicated by the LANFRMRTY parameter), the system notifies the user
|
||
|
|
that an error occurred and disconnects itself from the remote station.</p>
|
||
|
|
<p><strong>Performance problems:</strong></p>
|
||
|
|
<p>The default values of the parameters are designed for a single LAN and
|
||
|
|
can cause too many frame retransmissions when accessing a remote station through
|
||
|
|
a remote bridge. The bridge might slow data traffic enough that your retransmit
|
||
|
|
timer expires before the remote station's acknowledgment reaches you. Eventually,
|
||
|
|
your system automatically disconnects itself because it retransmitted
|
||
|
|
a frame too many times. If this is the case, you should increase the values
|
||
|
|
of LANRSPTMR and LANFRMRTY.</p>
|
||
|
|
<div class="note"><span class="notetitle">Note:</span> If you make the parameter values too large, your connection failure
|
||
|
|
notices can be delayed.</div>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajysnaoveratmissues.htm" title="You can make timing adjustments through the parameters of the Systems Network Architecture (SNA) controller description.">Timing parameters</a></div>
|
||
|
|
</div>
|
||
|
|
<div class="reltasks"><strong>Related tasks</strong><br />
|
||
|
|
<div><a href="rzajychangingtimingparameters.htm" title="You can change timing parameters to improve LAN performance.">Change timing parameters</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|