60 lines
4.0 KiB
HTML
60 lines
4.0 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="Auto-sensing" />
|
||
|
|
<meta name="abstract" content="If auto-negotiation fails, your server can match the line speed of its link partner." />
|
||
|
|
<meta name="description" content="If auto-negotiation fails, your server can match the line speed of its link partner." />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzajyethernetcapabilities.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzajyduplexmodedef.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzajyautonegotiation.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="rzajyautosensing" />
|
||
|
|
<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>Auto-sensing</title>
|
||
|
|
</head>
|
||
|
|
<body id="rzajyautosensing"><a name="rzajyautosensing"><!-- --></a>
|
||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
||
|
|
<h1 class="topictitle1">Auto-sensing</h1>
|
||
|
|
<div><p>If auto-negotiation fails, your server can match the line speed
|
||
|
|
of its link partner.</p>
|
||
|
|
<p> However, the adapter cannot sense the duplex mode. The server will default
|
||
|
|
to half duplex, which can result in a duplex mismatch.</p>
|
||
|
|
<p id="rzajyautosensing__duplex_mismatch"><a name="rzajyautosensing__duplex_mismatch"><!-- --></a></p>
|
||
|
|
<div class="section"><h4 class="sectiontitle">Duplex mismatch</h4>The following is an example of a duplex
|
||
|
|
mismatch: Your <span class="keyword">iSeries™</span>, configured
|
||
|
|
for full duplex, is connecting to a hub configured for half duplex. The iSeries server
|
||
|
|
begins sending information to the hub, which is waiting to receive. When
|
||
|
|
the receive line is clear, the hub will then begin transmission back to the iSeries server.
|
||
|
|
During this transmission, the iSeries receives the incoming data and
|
||
|
|
(if it has data ready) begins transmitting to the hub. Because the hub is
|
||
|
|
half duplex, it will see this unexpected receipt of data and will cancel the
|
||
|
|
transmission in progress. This is called a collision. A duplex mismatch problem
|
||
|
|
might be reported as a 'failure to connect' error, or it might cause a more
|
||
|
|
subtle performance problem due to intermittent cancelled frames.</div>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajyethernetcapabilities.htm" title="Ethernet capabilities, such as line speed and duplex mode, can enhance your server's performance.">Ethernet capabilities</a></div>
|
||
|
|
</div>
|
||
|
|
<div class="relconcepts"><strong>Related concepts</strong><br />
|
||
|
|
<div><a href="rzajyduplexmodedef.htm" title="Depending on your server's capabilities and the duplex mode of the link partner you are attaching to, you can use either full or half duplex.">Duplex mode</a></div>
|
||
|
|
<div><a href="rzajyautonegotiation.htm" title="Auto-negotiation is the preferred method of configuring your system's Ethernet connections.">Auto-negotiation</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|