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...nisms defined, and possible gaps in coverage. The best-known of these, the Open Systems Interconnection Reference Model (OSIRM), developed by the International Organization for Standardization (I The Open Systems Interconnection Reference Model was originally published with seven abstract layers <ref name=ISO7498>{{Cit

...od that the IETF does not use rigid layering or specifications as does the Open Systems Interconnection Reference Model (OSIRM), yet the lack of unnecessary formalism is one reason that IPS proto ...c, some vendor, and random tutorials on network architecture, to treat the Open Systems Interconnection Reference Model as if it is still used other than as a teaching aid, and to try to “coerc

...ic" to the transmission system, runs. While LANs do not completely fit the Open Systems Interconnection Reference Model, most of their functions are at layer 1 (physical) and layer 2 (data link).

...ctice, the relatively informal Internet architecture is most common. The [[Open Systems Interconnection Reference Model|OSI]] (Open Systems Interconnection), produced by the International Organiz ...opping]]. These issues have been divided into layers in the so called '''[[Open Systems Interconnection Reference Model]]'''. This model defines a stack of communication services where each layer

...Layer was considered one of the less important parts of the obsolescent [[Open Systems Interconnection Reference Model]], '''session-layer [[protocol (computer)|protocols]]''' have been found to

...hm with OSPF, developed in a different standards body, when not only the [[Open Systems Interconnection Reference Model]] but the OSI protocols still were considered a potential competitor for th