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The Differentiated Services Architecture
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Author(s): Sergio Herrería-Alonso (Universidade de Vigo, Spain), Manuel Fernández Veiga (Universidade de Vigo, Spain), Andrés Suárez González (Universidade de Vigo, Spain), Miguel Rodríguez Pérez (Universidade de Vigo, Spain)and Cándido López-García (Universidade de Vigo, Spain)
Copyright: 2008
Pages: 7
Source title:
Encyclopedia of Internet Technologies and Applications
Source Author(s)/Editor(s): Mario Freire (University of Beira Interior, Portugal)and Manuela Pereira (University of Beira Interior, Portugal)
DOI: 10.4018/978-1-59140-993-9.ch022
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Abstract
IP networks only offer best-effort service to all kinds of traffic. This means that IP tries to deliver each packet as quickly as possible, but makes no service guarantees. However, as the diversity of applications increase, this simple model with no service guarantees cannot satisfy all of them. For example, novel interactive applications such as Internet telephony, video conferencing, or networked games expect some performance guarantees to operate right. The growing importance of these recent applications with stringent constraints behooves network service providers to differentiate among various types of traffic and provide a new range of service models able to accommodate heterogeneous application requirements and user expectations.
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