69 lines
4.7 KiB
HTML
69 lines
4.7 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="How LAN devices identify themselves" />
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<meta name="abstract" content="Your system compares the exchanged information against the information contained in the line and controller descriptions." />
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<meta name="description" content="Your system compares the exchanged information against the information contained in the line and controller descriptions." />
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<meta name="DC.Relation" scheme="URI" content="rzajuunderstandingconnestablishment.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzajuexchangeidentifiers.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="understanding_station_ids" />
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<meta name="DC.Language" 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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<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>How LAN devices identify themselves</title>
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</head>
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<body id="understanding_station_ids"><a name="understanding_station_ids"><!-- --></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">How LAN devices identify themselves</h1>
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<div><p>Your system compares the exchanged information against the information
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contained in the line and controller descriptions.</p>
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<p>During the connection process, your system sends information
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to the remote device, which the device uses to ensure connection to the correct
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system. The remote device also sends information to your system, which your
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system uses to ensure the connection to the correct device. If the exchanged
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information matches the information contained in the line and controller descriptions
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and other connection values are correct, the connection process continues.
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Likewise, the remote device performs a similar process.</p>
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<p>Your system and the remote device use two verifications during the connection
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process to ensure connection to the correct device. One verification (required),
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matches the line description information and controller description information
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with the connection information that the remote device sent. If a match occurs,
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your system continues with the connection process.</p>
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<p>This list shows the information that the remote device sends:</p>
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<ul><li>The address associated with the input/output adapter (IOA) on the remote
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device. This address is either the preset address or the locally administered
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address.</li>
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<li>The source service access point <a href="rzajuhigherlayersoverlanprotocols.htm#higher_layers_over_lan_protocols__ssaps_and_dsaps">(SSAP)</a> on the remote device.</li>
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<li>The destination service access point <a href="rzajuhigherlayersoverlanprotocols.htm#higher_layers_over_lan_protocols__ssaps_and_dsaps">(DSAP)</a>.</li>
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</ul>
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<p>The other verification matches the <a href="rzajuexchangeidentifiers.htm#exchange_identifiers">exchange
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identifier</a> values. For Advanced Program-to-Program Communications
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(APPCs), this verification is optional. Systems Network Architecture (SNA)
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hosts that use parallel connections require this verification.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzajuexchangeidentifiers.htm">SNA exchange identifiers</a></strong><br />
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To establish a connection, your system and the remote device exchange information that includes the exchange identifiers (XIDs).</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajuunderstandingconnestablishment.htm" title="If you use Systems Network Architecture (SNA) with a LAN protocol, use this information to establish the connection between LAN devices.">Connection establishment between LAN devices</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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