104 lines
7.7 KiB
HTML
104 lines
7.7 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Proxy Address Resolution Protocol method" />
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<meta name="abstract" content="This proxy Address Resolution Protocol (ARP) method uses transparent subnetting to associate a partition's virtual interface with an external interface. Proxy ARP function is built into the TCP/IP stack. If you have the necessary IP addresses, this approach is recommended." />
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<meta name="description" content="This proxy Address Resolution Protocol (ARP) method uses transparent subnetting to associate a partition's virtual interface with an external interface. Proxy ARP function is built into the TCP/IP stack. If you have the necessary IP addresses, this approach is recommended." />
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<meta name="DC.Relation" scheme="URI" content="rzai2virtethernet.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2nat.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2routing.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2virtethconsider.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2arpenableveth.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2arpcreatevethlind.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2arpdataforward.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2arpcreatepif.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzai2arpcreatevethrte.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Proxy Address Resolution Protocol method</title>
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</head>
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<body id="proxyarp"><a name="proxyarp"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Proxy Address Resolution Protocol method</h1>
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<div><p>This proxy Address Resolution Protocol (ARP) method uses transparent
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subnetting to associate a partition's virtual interface with an external interface.
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Proxy ARP function is built into the TCP/IP stack. If you have the necessary
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IP addresses, this approach is recommended.</p>
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<div class="p">You might want to learn more information about transparent subnetting: <ul><li><a href="http://w3.itso.ibm.com/itsoapps/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65f/baba0a045143082086256810007527b0?OpenDocument">V4 TCP/IP for AS/400<sup>®</sup>: More Cool Things Than Ever</a><img src="rbpdf.gif" alt="Link to PDF" /> <p>This IBM<sup>®</sup> Redbook provides sample scenarios that
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demonstrate common solutions with example configurations. It also helps you
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plan, install, tailor, configure, and troubleshoot TCP/IP on your iSeries™ server.</p>
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</li>
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<li><a href="../rzajw/rzajwkickoff.htm">TCP/IP
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routing and workload balancing</a> <p>This topic provides techniques and
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instructions for routing and workload balancing.</p>
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</li>
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</ul>
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</div>
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<p>If you choose to use the proxy ARP method, you must have a firm understanding
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of subnetting and TCP/IP. You need to obtain a contiguous block of IP addresses
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that are routable by your network. You subnet this block of IP addresses.
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In this example, a contiguous block of four IP addresses (<samp class="codeph">10.1.1.72</samp> through <samp class="codeph">10.1.1.75</samp>)
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is used. Because it is a block of four IP addresses, the subnet mask for these
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addresses is <samp class="codeph">255.255.255.252</samp>. You assign one to each of the
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virtual TCP/IP interfaces on your partitions as shown in this figure.</p>
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<p><br /><img src="rzai2505.gif" alt="Figure illustrates virtual TCP/IP interfaces on partition A and partition B and the external proxy ARP interface" /><br /></p>
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<p>In this example, TCP/IP traffic from partition A runs across the virtual
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Ethernet to the <samp class="codeph">10.1.1.74</samp> interface on partition B. Because<samp class="codeph">10.1.1.74</samp> is
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associated with the external proxy ARP interface <samp class="codeph">10.1.1.15</samp>,
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the packets continue out of the virtual Ethernet using the proxy ARP interface.</p>
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<p>To configure a virtual Ethernet to use the proxy ARP connection method,
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complete these configuration tasks. </p>
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</div>
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<div>
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<ol>
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<li class="olchildlink"><a href="rzai2arpenableveth.htm">Step 1: Enable the logical partitions to participate in a virtual Ethernet</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpcreatevethlind.htm">Step 2: Create the Ethernet line descriptions</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpdataforward.htm">Step 3: Turn on IP datagram forwarding</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpcreateproxyifc.htm">Step 4: Create the interface to enable proxy ARP</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpcreatevethifcprim.htm">Step 5: Create the virtual TCP/IP interface on partition A</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpcreatevethifcsecond.htm">Step 6: Create the virtual TCP/IP interface on partition B</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpcreatepif.htm">Step 7: Create a preferred interface list</a><br />
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You can now create a preferred interface list to control which adapters and IP addresses will be the preferred interface for virtual Ethernet proxy Address Resolution Protocol (ARP) agent selection.</li>
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<li class="olchildlink"><a href="rzai2arpcreatevethrte.htm">Step 8: Create the route</a><br />
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</li>
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<li class="olchildlink"><a href="rzai2arpvfynetcom.htm">Step 9: Verify network communications</a><br />
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</li>
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</ol>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzai2virtethernet.htm" title="You can take advantage of virtual Ethernet on i5/OS.">TCP/IP techniques connecting virtual Ethernet to external LANs</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzai2nat.htm" title="You can use i5/OS packet filtering to route traffic between a partition and the outside network.">Network address translation method</a></div>
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<div><a href="rzai2routing.htm" title="Standard TCP/IP routing is used to route traffic to the virtual Ethernet network in the same way you define routing to any other LAN. This requires that you update routing information throughout your network.">TCP/IP routing method</a></div>
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<div><a href="rzai2virtethconsider.htm" title="You can use virtual Ethernet as an alternative to using a network card for interpartition communication.">Virtual Ethernet considerations</a></div>
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</div>
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</div>
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</body>
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</html>
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