Attaining per-flow QoS with class-based differentiated services

Mudassir Tufail; Geoffroy Jennes; Guy Leduc

doi:10.1117/12.368306

5 November 1999 Attaining per-flow QoS with class-based differentiated services

Mudassir Tufail, Geoffroy Jennes, Guy Leduc

Proceedings Volume 3842, Internet II: Quality of Service and Future Directions; (1999) https://doi.org/10.1117/12.368306
Event: Photonics East '99, 1999, Boston, MA, United States

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.

Citation Download Citation

Mudassir Tufail, Geoffroy Jennes, and Guy Leduc "Attaining per-flow QoS with class-based differentiated services", Proc. SPIE 3842, Internet II: Quality of Service and Future Directions, (5 November 1999); https://doi.org/10.1117/12.368306

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