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Titolo:
A review of quality of service mechanisms in IP-based networks - integrated and differentiated services, multi-layer switching, MPLS and traffic engineering
Autore:
Hunt, R;
Indirizzi:
Univ Canterbury, Dept Comp Sci, Christchurch 1, New Zealand Univ Canterbury Christchurch New Zealand 1 , Christchurch 1, New Zealand
Titolo Testata:
COMPUTER COMMUNICATIONS
fascicolo: 1, volume: 25, anno: 2002,
pagine: 100 - 108
SICI:
0140-3664(20020101)25:1<100:AROQOS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Keywords:
QoS (quality of service); differentiated services (DiffServ); integrated services (IntServ); BM (bandwidth manager); multi-later switching; MPLS (multi-protocol label switching); traffic engineering;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Hunt, R Univ Canterbury, Dept Comp Sci, Private Bag 4800, Christchurch 1, New Zealand Univ Canterbury Private Bag 4800 Christchurch New Zealand 1 aland
Citazione:
R. Hunt, "A review of quality of service mechanisms in IP-based networks - integrated and differentiated services, multi-layer switching, MPLS and traffic engineering", COMPUT COMM, 25(1), 2002, pp. 100-108

Abstract

ISPs are facing the challenge of offering improved quality of service (QoS) to their customers. No longer is, best effort delivery with no service guarantee acceptable for many applications. Although ATM has provided a limited solution by way of service classes, such a solution pre-supposed an underlying ATM network which - in the case of pure IP traffic - may not be the case. Rather IP traffic requires a degree of engineering into service classes (differentiated services, DiffServ) as well as a break from traditional layer three-based routing Although access to virtually unlimited bandwidth via WDM and Photonic Networks may potentially offer a solution to the QoS issue, access to such services on a universal basis is not a services class paradigm and using a label switching technique is seen as an appropriate medium term solution. Further, label switching offers a simple and efficient mechanism for IP traffic engineering, multi-service functionality and scalability. This paper examines a number of service classifications and solutions, which aim to provide a realistic QoS solution. In particular it addresses Integrated and DiffServ, multi-layer switching and MPLS, which forms thebasis of DiffServ as it allows ISPs to deliver new services not easily supportable by conventional IP routing infrastructure. Finally the paper makessome important observations about traffic engineering. (C) 2002 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 10:15:36