67 lines
4.2 KiB
HTML
67 lines
4.2 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="2005-09-06" />
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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>Advanced program-to-program communications</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="rzajtappc-con"></a>
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<h3 id="rzajtappc-con">Advanced program-to-program communications</h3>
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<p>Advanced program-to-program communications (APPC) is data communications
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support that allows programs on an iSeries™ server to communicate with programs
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on other systems having compatible communications support. APPC on the iSeries system provides
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an application programming interface to the Systems Network Architecture (SNA)
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logical unit (LU) type 6.2 and node type 2.1 architectures.</p>
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<p>The APPC support handles all of the SNA protocol requirements when your
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system is communicating with a remote system that uses the LU type 6.2 and
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node type 2.1 architectures. You can connect your system to any other system
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that supports the APPC program interface. APPC application programs can also
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communicate over lines using the Internet Protocol (IP) of Transmission Control
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Protocol/Internet Protocol (TCP/IP).</p>
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<p>The iSeries APPC support handles the protocol needed for communicating between
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an application program that runs on your iSeries system, and an application that runs
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on a remote system. The protocol consists of a set of verbs that are common
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to the local and remote systems in a network. However, the way in which each
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system provides a program interface to the verbs may differ.</p>
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<p>The iSeries system provides the following program interfaces: </p>
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<ul>
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<li>The intersystem communications function (ICF) file interface. In ICF,
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the LU 6.2 verbs are carried out by using data description specifications
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(DDS) keywords and system-supplied formats.</li>
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<li>The Common Programming Interface (CPI) Communications call interface.
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Using CPI Communication calls carries the LU 6.2 verbs.</li>
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<li>The CICS® file interface. In CICS/400® support, the LU 6.2 verbs are carried
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out by using EXEC CICS commands.</li>
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<li>The sockets application programming interface (API). For the sockets API,
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the LU 6.2 verbs are carried out by using the socket functions.</li></ul>
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<p>The APPC support also handles networking functions, and allows peer systems
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in a network to start and end sessions without a controlling host system.</p>
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<p>The iSeries Advanced Peer-to-Peer Networking® (APPN) support
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is an enhancement to the node type 2.1 architecture. APPN provides additional
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networking functions such as searching distributed directories, dynamically
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selecting routes, routing of intermediate sessions, creating and starting
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remote locations, and routing data by using transmission priorities.</p>
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<p>Built on APPN, high-performance routing (HPR) is an enhancement to APPN
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that enables improved availability and persistence during network outages.</p>
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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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