116 lines
3.6 KiB
HTML
116 lines
3.6 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 4.0//EN">
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<html>
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<head>
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">
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<title>TCP/IP troubleshooter</title>
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<meta name="Copyright" content="Copyright (c) 2004 by IBM Corporation">
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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="Copyright" content="Copyright (c) 2004 by IBM Corporation">
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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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<script language="Javascript" type="text/javascript" src="../../iccommon.js"></script>
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<script type="text/javascript" language="Javascript">
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//START NON-TRANSLATABLE
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function closeThis() {
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window.close();
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}
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//END NON-TRANSLATABLE
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</script>
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<script type="text/javascript" language="Javascript"></script>
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<h2>TCP/IP troubleshooter</h2>
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<strong>Route information</strong>
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<p>Route selection (how and where the system sends outbound IP traffic) is accomplished by processing or checking routes in a particular order. The destination IP address in the IP packet determines the route that will be selected. The system selects the routes in this order:
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<ol>
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<li><strong>Direct Routes:</strong>
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<ul>
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<li>Created automatically by the system based on an interface that was previously configured.</li>
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<li>Subnet mask value is the same as the subnet mask value you specified for the interface you previously configured.</li>
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<li>Next hop value is always *DIRECT.</li></ul></li>
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<li><strong>Host Routes:</strong>
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<ul>
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<li>Created to route traffic to one specific host.</li>
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<li>Subnet mask value is always 255.255.255.255 or *HOST. If you enter the mask 255.255.255.255 for the host route, the operating system converts the numerical address to *HOST.</li>
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</ul></li>
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<li><strong>Network Routes:</strong>
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<ul>
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<li>Created to route traffic to an entire network of hosts.</li>
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<li>Subnet mask value varies depending on your specific subnetting scheme.</li>
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</ul></li>
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<li><strong>Default Routes:</strong>
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<ul>
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<li>Created to route traffic when the IP packet does not find a match in the previous three types of routes.</li>
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<li>Subnet mask value is always *NONE.</li>
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</ul></li>
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</ol></p>
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<p>See examples of each of these types of routes:</p>
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<p><strong>Note: </strong>The IP addresses 10.x.x.x and 192.x.x.x represent public IP addresses. All of these addresses are fictitious and are used for example purposes only</p>
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<p>
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<table width=600 cellspacing="2" cellpadding="2" border="1">
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<tr>
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<th>Type of Route</th>
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<th>Route Destination</th>
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<th>Subnet Mask</th>
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<th>Next Hop</th>
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</tr>
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<tr>
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<td>Direct Route</td>
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<td>10.1.1.0</td>
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<td>255.255.255.0</td>
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<td>*DIRECT</td>
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</tr>
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<tr>
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<td>Host Route</td>
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<td>192.16.1.41</td>
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<td>*HOST</td>
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<td>10.1.1.1</td>
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</tr>
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<tr>
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<td>Network Route</td>
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<td>192.18.3.0</td>
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<td>255.255.255.0</td>
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<td>10.1.1.2</td>
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</tr>
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<tr>
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<td>Default Route</td>
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<td>*DFTROUTE</td>
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<td>*NONE</td>
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<td>10.1.1.3</td>
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</tr>
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</table>
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</p>
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<form>
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<p><center>
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<INPUT type="button" name="closeButton" value="Close window" onclick= "closeThis()">
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</center></p>
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</form>
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</body>
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