66 lines
4.0 KiB
HTML
66 lines
4.0 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-13" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<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))' />
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<title>Configuring virtual Ethernet to support unusual non-TCP applications
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that do not negotiate MTU</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<img src="delta.gif" alt="Start of change" /><img src="delta.gif" alt="Start of change" />
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<a name="rzahqconfigvetcp"></a>
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<h4 id="rzahqconfigvetcp">Configuring virtual Ethernet to support unusual non-TCP applications
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that do not negotiate MTU</h4>
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<a name="wq240"></a>
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<div class="notetitle" id="wq240">Note:</div>
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<div class="notebody">To avoid impacts to normal applications that negotiate MTU,
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before performing this procedure you may want to define a separate virtual
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Ethernet network or separate IP addresses for the application that does not
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negotiate MTU.</div>
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<ol type="1">
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<li>Do one of the following.
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<ol type="a">
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<li>If all Windows endpoints will use an iSCSI network having a maximum frame
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size of 1500 bytes or greater, configure the iSCSI HBA <span>Ethernet frame size</span> at all Windows endpoints to a value as large as possible
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without exceeding the most constrained iSCSI network's maximum frame
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size.</li>
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<li>If any Windows endpoint will use an iSCSI network having a maximum frame
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size less than 1500 bytes, configure the virtual Ethernet <span>Maximum frame size</span> at all Windows endpoints to a value is as large as
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possible without exceeding the most constrained iSCSI network's maximum
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frame size.</li></ol></li>
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<li>At other endpoints, set the MTU to a value determined by subtracting 116
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from the smaller of the Windows iSCSI HBA <span>Ethernet
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frame size</span> and the virtual Ethernet <span>Maximum
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frame size</span>. For i5/OS™ endpoints, you can accomplish this by performing
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the following procedure.
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<ol type="a">
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<li>Using iSeries™ Navigator, expand <span class="bold">Network</span>—><span class="bold">TCP/IP Configuration</span>—><span class="bold">IPv4</span>—> <span class="bold">Interfaces</span>.</li>
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<li>Right-click the interface with the IP address and line description name
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of interest and select <span class="bold">Properties</span>.</li>
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<li>On the <span class="bold">Advanced</span> tab, type the calculated value in
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the Maximum transmission unit field and click <span class="bold">OK</span> to
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save the change.</li></ol>
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<a name="wq244"></a>
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<div class="notetitle" id="wq244">Note:</div>
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<div class="notebody">If you want to use the command line interface, use CFGTCP
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and select option 1, Work with TCP/IP interfaces.</div></li></ol><img src="deltaend.gif" alt="End of change" /><img src="deltaend.gif" alt="End of change" />
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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