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Proceedings Paper

Attaining per-flow QoS with class-based differentiated services
Author(s): Mudassir Tufail; Geoffroy Jennes; Guy Leduc
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Paper Abstract

The Differentiated Services (DiffServ or DS) framework takes an edge over IntServ because it is scalable and lesser complex. On the other hand, the application level end-to-end quality of service, in DiffServ, may get compromised because: (1) network resources are not allocated at microflow level (a data stream pertaining to a single connection) but at aggregate level (collection of one or more microflows), (2) the DiffServ working group does not specify algorithms for PHBs but their output behaviors and (3) end-to-end quality is function of Service Level Agreements (SLAs) between the adjacent domains transited by the connection and a large diversity in SLAs is quite evident as each DS domain would have different service provision policies. We focus, in this paper, on the first two issues. Our goal is to have DiffServ deployed with all its simplicity and still be able to provide application level end-to-end quality of service. For that, we study a PHB for AF classes. A PHB comprises a packet scheduler and a packet accept/discard algorithm.

Paper Details

Date Published: 5 November 1999
PDF: 12 pages
Proc. SPIE 3842, Internet II: Quality of Service and Future Directions, (5 November 1999); doi: 10.1117/12.368306
Show Author Affiliations
Mudassir Tufail, Univ. of Liege (Belgium)
Geoffroy Jennes, Univ. of Liege (Belgium)
Guy Leduc, Univ. of Liege (Belgium)


Published in SPIE Proceedings Vol. 3842:
Internet II: Quality of Service and Future Directions
Raif O. Onvural; Seyhan Civanlar; James V. Luciani, Editor(s)

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