Open Systems Interconnection
etworking> (OSI-RM, OSI Reference Model, seven layer model) A model of network architecture and a suite of ef="module.php?name=Lexikon&file=search&eid=1&query=protocols">protocols (a ef="module.php?name=Lexikon&file=search&eid=1&query=protocol stack">protocol stack) to implement it, developed by ef="module.php?name=Lexikon&file=search&eid=1&query=ISO">ISO in 1978 as a framework for international ef="module.php?name=Lexikon&file=search&eid=1&query=standards">standards in heterogeneous computer ef="module.php?name=Lexikon&file=search&eid=1&query=network">network architecture. The OSI architecture is split between seven ef="module.php?name=Lexikon&file=search&eid=1&query=layers">layers, from lowest to highest: 1 ef="module.php?name=Lexikon&file=search&eid=1&query=physical layer">physical layer, 2 ef="module.php?name=Lexikon&file=search&eid=1&query=data link layer">data link layer, 3 ef="module.php?name=Lexikon&file=search&eid=1&query=network layer">network layer, 4 ef="module.php?name=Lexikon&file=search&eid=1&query=transport layer">transport layer, 5 ef="module.php?name=Lexikon&file=search&eid=1&query=session layer">session layer, 6 ef="module.php?name=Lexikon&file=search&eid=1&query=presentation layer">presentation layer, 7 ef="module.php?name=Lexikon&file=search&eid=1&query=application layer">application layer. each layer uses the layer immediately below it and provides a service to the layer above. In some implementations a layer may itself be composed of sub-layers. OSI is the umbrella name for a series of non-proprietary protocols and specifications, comprising, among others, the OSI Reference Model, ASN.1 (ef="module.php?name=Lexikon&file=search&eid=1&query=Abstract Syntax Notation 1">Abstract Syntax Notation 1), BeR (ef="module.php?name=Lexikon&file=search&eid=1&query=Basic encoding Rules">Basic encoding Rules), ef="module.php?name=Lexikon&file=search&eid=1&query=CMIP">CMIP and ef="module.php?name=Lexikon&file=search&eid=1&query=CMIS">CMIS (Common Management Information Protocol and Services), ef="module.php?name=Lexikon&file=search&eid=1&query=X.400">X.400 (Message Handling System, or MHS), ef="module.php?name=Lexikon&file=search&eid=1&query=X.500">X.500 (Directory Service), ef="module.php?name=Lexikon&file=search&eid=1&query=Z39.50">Z39.50 (search and retrieval protocol used by ef="module.php?name=Lexikon&file=search&eid=1&query=WAIS">WAIS), and many others. Apart from its actual application to real protocols, it also serves as a useful teaching model. (2004-02-13) e="border-width:thin; border-color:#333333; border-style:dashed; padding:5px;" align="left">In addition suitable contents:
[ ef="module.php?name=Lexikon&op=content&tid=31">2 ] [ ef="module.php?name=Lexikon&op=content&tid=134">= ] [ ef="module.php?name=Lexikon&op=content&tid=396">ag ] [ ef="module.php?name=Lexikon&op=content&tid=410">AI ] [ ef="module.php?name=Lexikon&op=content&tid=433">al ] [ ef="module.php?name=Lexikon&op=content&tid=544">am ] [ ef="module.php?name=Lexikon&op=content&tid=592">an ] [ ef="module.php?name=Lexikon&op=content&tid=683">app ] [ ef="module.php?name=Lexikon&op=content&tid=700">application ] [ ef="module.php?name=Lexikon&op=content&tid=709">application layer ] [ ef="module.php?name=Lexikon&op=content&tid=740">ar ] [ ef="module.php?name=Lexikon&op=content&tid=743">arc ] [ ef="module.php?name=Lexikon&op=content&tid=748">architecture ] [ ef="module.php?name=Lexikon&op=content&tid=799">AS ] [ ef="module.php?name=Lexikon&op=content&tid=800">as ] [ ef="module.php?name=Lexikon&op=content&tid=833">ASN ] [ ef="module.php?name=Lexikon&op=content&tid=834">ASN.1 ] [ ef="module.php?name=Lexikon&op=content&tid=894">at ] [ ef="module.php?name=Lexikon&op=content&tid=1025">B ] [ ef="module.php?name=Lexikon&op=content&tid=1026">b ] [ ef="module.php?name=Lexikon&op=content&tid=1133">Basic encoding Rules ] [ ef="module.php?name=Lexikon&op=content&tid=1181">be ] [ ef="module.php?name=Lexikon&op=content&tid=1222">BeR ] [ ef="module.php?name=Lexikon&op=content&tid=1444">bo ] [ ef="module.php?name=Lexikon&op=content&tid=1535">br ] [ ef="module.php?name=Lexikon&op=content&tid=1606">bs ] [ ef="module.php?name=Lexikon&op=content&tid=1695">by ] [ ef="module.php?name=Lexikon&op=content&tid=1708">C ] [ ef="module.php?name=Lexikon&op=content&tid=1724">ca ] [ ef="module.php?name=Lexikon&op=content&tid=1863">cat ] [ ef="module.php?name=Lexikon&op=content&tid=2001">ch ] [ ef="module.php?name=Lexikon&op=content&tid=2099">ci ] [ ef="module.php?name=Lexikon&op=content&tid=2136">ck ] [ ef="module.php?name=Lexikon&op=content&tid=2220">CM ] [ ef="module.php?name=Lexikon&op=content&tid=2226">CMIP ] [ ef="module.php?name=Lexikon&op=content&tid=2227">CMIS ] [ ef="module.php?name=Lexikon&op=content&tid=2247">co ] [ ef="module.php?name=Lexikon&op=content&tid=2330">com ] [ ef="module.php?name=Lexikon&op=content&tid=2391">Common Management Information Protocol ] [ ef="module.php?name=Lexikon&op=content&tid=2491">computer ] [ ef="module.php?name=Lexikon&op=content&tid=2976">D ] [ ef="module.php?name=Lexikon&op=content&tid=3006">data ] [ ef="module.php?name=Lexikon&op=content&tid=3054">data link layer ] [ ef="module.php?name=Lexikon&op=content&tid=3151">de ] [ ef="module.php?name=Lexikon&op=content&tid=3436">ding ] [ ef="module.php?name=Lexikon&op=content&tid=3752">du ] [ ef="module.php?name=Lexikon&op=content&tid=3834">e ] [ ef="module.php?name=Lexikon&op=content&tid=3865">ec ] [ ef="module.php?name=Lexikon&op=content&tid=3896">ed ] [ ef="module.php?name=Lexikon&op=content&tid=3929">ee ] [ ef="module.php?name=Lexikon&op=content&tid=4147">eR ] [ ef="module.php?name=Lexikon&op=content&tid=4148">er ] [ ef="module.php?name=Lexikon&op=content&tid=4171">es ] [ ef="module.php?name=Lexikon&op=content&tid=4199">et ] [ ef="module.php?name=Lexikon&op=content&tid=4497">fi ] [ ef="module.php?name=Lexikon&op=content&tid=4520">file ] [ ef="module.php?name=Lexikon&op=content&tid=4700">fo ] [ ef="module.php?name=Lexikon&op=content&tid=4727">for ] [ ef="module.php?name=Lexikon&op=content&tid=4828">fr ] [ ef="module.php?name=Lexikon&op=content&tid=4837">frame ] [ ef="module.php?name=Lexikon&op=content&tid=4849">framework ] [ ef="module.php?name=Lexikon&op=content&tid=5057">ge ] [ ef="module.php?name=Lexikon&op=content&tid=5070">gen ] [ ef="module.php?name=Lexikon&op=content&tid=5134">gh ] [ ef="module.php?name=Lexikon&op=content&tid=5434">h ] [ ef="module.php?name=Lexikon&op=content&tid=5600">heterogeneous ] [ ef="module.php?name=Lexikon&op=content&tid=5656">hing ] [ ef="module.php?name=Lexikon&op=content&tid=5664">hit ] [ ef="module.php?name=Lexikon&op=content&tid=5768">hr ] [ ef="module.php?name=Lexikon&op=content&tid=5931">id ] [ ef="module.php?name=Lexikon&op=content&tid=5956">ie ] [ ef="module.php?name=Lexikon&op=content&tid=6013">il ] [ ef="module.php?name=Lexikon&op=content&tid=6064">in ] [ ef="module.php?name=Lexikon&op=content&tid=6194">int ] [ ef="module.php?name=Lexikon&op=content&tid=6413">io ] [ ef="module.php?name=Lexikon&op=content&tid=6423">IP ] [ ef="module.php?name=Lexikon&op=content&tid=6449">ir ] [ ef="module.php?name=Lexikon&op=content&tid=6481">IS ] [ ef="module.php?name=Lexikon&op=content&tid=6482">is ] [ ef="module.php?name=Lexikon&op=content&tid=6508">ISO ] [ ef="module.php?name=Lexikon&op=content&tid=6558">it ] [ ef="module.php?name=Lexikon&op=content&tid=6822">ki ] [ ef="module.php?name=Lexikon&op=content&tid=6918">la ] [ ef="module.php?name=Lexikon&op=content&tid=7001">layer ] [ ef="module.php?name=Lexikon&op=content&tid=7091">Lex ] [ ef="module.php?name=Lexikon&op=content&tid=7107">li ] [ ef="module.php?name=Lexikon&op=content&tid=7176">link ] [ ef="module.php?name=Lexikon&op=content&tid=7399">ls ] [ ef="module.php?name=Lexikon&op=content&tid=7441">ly ] [ ef="module.php?name=Lexikon&op=content&tid=7457">M ] [ ef="module.php?name=Lexikon&op=content&tid=7463">ma ] [ ef="module.php?name=Lexikon&op=content&tid=7582">man ] [ ef="module.php?name=Lexikon&op=content&tid=7778">Message Handling System ] [ ef="module.php?name=Lexikon&op=content&tid=7836">MHS ] [ ef="module.php?name=Lexikon&op=content&tid=7984">MIS ] [ ef="module.php?name=Lexikon&op=content&tid=8019">mm ] [ ef="module.php?name=Lexikon&op=content&tid=8032">mo ] [ ef="module.php?name=Lexikon&op=content&tid=8040">mod ] [ ef="module.php?name=Lexikon&op=content&tid=8045">Mode ] [ ef="module.php?name=Lexikon&op=content&tid=8046">mode ] [ ef="module.php?name=Lexikon&op=content&tid=8050">model ] [ ef="module.php?name=Lexikon&op=content&tid=8079">module ] [ ef="module.php?name=Lexikon&op=content&tid=8167">mp ] [ ef="module.php?name=Lexikon&op=content&tid=8384">N ] [ ef="module.php?name=Lexikon&op=content&tid=8386">na ] [ ef="module.php?name=Lexikon&op=content&tid=8460">nc ] [ ef="module.php?name=Lexikon&op=content&tid=8472">ne ] [ ef="module.php?name=Lexikon&op=content&tid=8488">net ] [ ef="module.php?name=Lexikon&op=content&tid=8533">network ] [ ef="module.php?name=Lexikon&op=content&tid=8555">networking ] [ ef="module.php?name=Lexikon&op=content&tid=8558">network layer ] [ ef="module.php?name=Lexikon&op=content&tid=8622">nf ] [ ef="module.php?name=Lexikon&op=content&tid=8627">ng ] [ ef="module.php?name=Lexikon&op=content&tid=8675">no ] [ ef="module.php?name=Lexikon&op=content&tid=8760">ns ] [ ef="module.php?name=Lexikon&op=content&tid=8820">O ] [ ef="module.php?name=Lexikon&op=content&tid=8964">om ] [ ef="module.php?name=Lexikon&op=content&tid=9014">op ] [ ef="module.php?name=Lexikon&op=content&tid=9132">OS ] [ ef="module.php?name=Lexikon&op=content&tid=9145">OSI ] [ ef="module.php?name=Lexikon&op=content&tid=9147">OSI Reference Model ] [ ef="module.php?name=Lexikon&op=content&tid=9148">OSI-RM ] [ ef="module.php?name=Lexikon&op=content&tid=9204">pa ] [ ef="module.php?name=Lexikon&op=content&tid=9457">pe ] [ ef="module.php?name=Lexikon&op=content&tid=9550">ph ] [ ef="module.php?name=Lexikon&op=content&tid=9572">physical ] [ ef="module.php?name=Lexikon&op=content&tid=9576">physical layer ] [ ef="module.php?name=Lexikon&op=content&tid=9651">pl ] [ ef="module.php?name=Lexikon&op=content&tid=9821">port ] [ ef="module.php?name=Lexikon&op=content&tid=9908">pr ] [ ef="module.php?name=Lexikon&op=content&tid=9937">presentation layer ] [ ef="module.php?name=Lexikon&op=content&tid=10087">proprietary ] [ ef="module.php?name=Lexikon&op=content&tid=10096">protocol ] [ ef="module.php?name=Lexikon&op=content&tid=10101">protocol stack ] [ ef="module.php?name=Lexikon&op=content&tid=10253">query ] [ ef="module.php?name=Lexikon&op=content&tid=10364">rc ] [ ef="module.php?name=Lexikon&op=content&tid=10385">re ] [ ef="module.php?name=Lexikon&op=content&tid=10390">real ] [ ef="module.php?name=Lexikon&op=content&tid=10767">ro ] [ ef="module.php?name=Lexikon&op=content&tid=10918">S ] [ ef="module.php?name=Lexikon&op=content&tid=10922">sa ] [ ef="module.php?name=Lexikon&op=content&tid=11150">se ] [ ef="module.php?name=Lexikon&op=content&tid=11259">serve ] [ ef="module.php?name=Lexikon&op=content&tid=11269">service ] [ ef="module.php?name=Lexikon&op=content&tid=11276">session ] [ ef="module.php?name=Lexikon&op=content&tid=11278">session layer ] [ ef="module.php?name=Lexikon&op=content&tid=11295">seven layer model ] [ ef="module.php?name=Lexikon&op=content&tid=11375">SI ] [ ef="module.php?name=Lexikon&op=content&tid=11376">si ] [ ef="module.php?name=Lexikon&op=content&tid=11650">SO ] [ ef="module.php?name=Lexikon&op=content&tid=11651">so ] [ ef="module.php?name=Lexikon&op=content&tid=11790">spec ] [ ef="module.php?name=Lexikon&op=content&tid=11801">specification ] [ ef="module.php?name=Lexikon&op=content&tid=11851">split ] [ ef="module.php?name=Lexikon&op=content&tid=11934">st ] [ ef="module.php?name=Lexikon&op=content&tid=11939">stack ] [ ef="module.php?name=Lexikon&op=content&tid=11956">standard ] [ ef="module.php?name=Lexikon&op=content&tid=12133">su ] [ ef="module.php?name=Lexikon&op=content&tid=12162">suit ] [ ef="module.php?name=Lexikon&op=content&tid=12359">T ] [ ef="module.php?name=Lexikon&op=content&tid=12416">tar ] [ ef="module.php?name=Lexikon&op=content&tid=12588">th ] [ ef="module.php?name=Lexikon&op=content&tid=12721">to ] [ ef="module.php?name=Lexikon&op=content&tid=12787">tr ] [ ef="module.php?name=Lexikon&op=content&tid=12827">transport layer ] [ ef="module.php?name=Lexikon&op=content&tid=12939">tw ] [ ef="module.php?name=Lexikon&op=content&tid=12986">ua ] [ ef="module.php?name=Lexikon&op=content&tid=13030">um ] [ ef="module.php?name=Lexikon&op=content&tid=13175">us ] [ ef="module.php?name=Lexikon&op=content&tid=13252">va ] [ ef="module.php?name=Lexikon&op=content&tid=13310">ve ] [ ef="module.php?name=Lexikon&op=content&tid=13366">vi ] [ ef="module.php?name=Lexikon&op=content&tid=13563">WAIS ] [ ef="module.php?name=Lexikon&op=content&tid=13891">X ] [ ef="module.php?name=Lexikon&op=content&tid=13917">X.400 ] [ ef="module.php?name=Lexikon&op=content&tid=13919">X.500 ] [ ef="module.php?name=Lexikon&op=content&tid=14042">ye ] [ ef="module.php?name=Lexikon&op=content&tid=14079">Z ] [ ef="module.php?name=Lexikon&op=content&tid=14083">Z3 ] [ ef="module.php?name=Lexikon&op=content&tid=14084">Z39.50 ]
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