52 lines
3.0 KiB
HTML
52 lines
3.0 KiB
HTML
<?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="2005-10-17" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 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>Proxy ARP with OptiConnect</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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<a name="proxyarpopticonnect"></a>
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<h3 id="proxyarpopticonnect">Proxy ARP with OptiConnect</h3>
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<p>Proxy address resolution protocol (ARP) allows physically distinct networks
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to appear as if they are a single, logical network. This technique provides
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connectivity between these physically separate networks, without creating
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any new logical networks and without updating any route tables.</p>
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<p>Proxy ARP allows systems that are not connected to the LAN to appear as
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if they are. When a system on the LAN wants to send data to one of the remote
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systems, it will do an ARP request to request the MAC (medium access control)
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address of the target system. When the iSeries™ server sees this request, it will reply
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to the request with the remote system's MAC address. Conversely, the system
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that requested the ARP will send it's MAC address to the iSeries server. The
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server will then forward the data to the remote system only if IP Forwarding
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is set to *YES.</p>
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<p>If you apply the above scenario in terms of OptiConnect, consider the following
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scenario:</p>
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<ul>
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<li>Two physically distinct networks: a LAN and one consisting of an OptiConnect
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bus need to communicate. In the above point-to-point configuration example,
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we assume that all systems are connected to the same OptiConnect bus and token-ring
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line. Suppose SYSTEM A has a token-ring connection and all access to SYSTEM
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B and SYSTEM C has to go through it. Proxy ARP provides the necessary connectivity
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to these physically distinct networks.</li></ul>
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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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