Network architecture: Difference between revisions

Revision as of 13:10, 18 July 2019

Revision as of 16:57, 7 August 2019

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{{No footnotes|date=June 2009}}

'''Network architecture''' is the design of a [[computer network]]. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as [[communication protocol]]s used.

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{{OSI model}}

The [[OSI model|Open Systems Interconnection model]] (OSI model) defines and codifies the concept of layered network architecture. [[Abstraction layer]]s are used to subdivide a communications system further into smaller manageable parts. A layer is a collection of similar functions that provide services to the layer above it and receives services from the layer below it. On each layer, an instance provides services to the instances at the layer above and requests service from the layer below.<ref>{{Cite news|url=https://searchnetworking.techtarget.com/definition/OSI|title=What is OSI model (Open Systems Interconnection)? - Definition from WhatIs.com|last=|first=|date=|work=SearchNetworking|access-date=2018-10-09|language=en-US}}</ref><!--[[User:Kvng/RTH]]-->

== Distributed computing ==

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{{main|Distributed computing}}

In distinct usage in [[distributed computing]], the term "''network architecture"'' often describes the structure and classification of a distributed application architecture, as the participating nodes in a distributed application are often referred to as a "''network"''. For example, the [[applications architecture]] of the [[public switched telephone network]] (PSTN) has been termed the [[Advanced Intelligent Network]]. There are any number of specific classifications but all lie on a continuum between the [[dumb network]] (e.g. [[Internet]]) and the intelligent network (e.g. the telephone network).

A popular example of such usage of the term in distributed applications, as well as PVCs (permanent virtual circuits), is the organization of nodes in [[P2P network|peer-to-peer (P2P) services and networks]]. P2P networks usually implement [[overlay networksnetwork]]s running over an underlying physical or logical network. These overlay networknetworks may implement certain organizational structures of the nodes according to several distinct models, the network architecture of the system.

== See also ==