Marking Conversion for Pre-Congestion Notification

Author

Lehrieder, Frank ; Menth, Michael

Author_Institution

Inst. of Comput. Sci., Univ. of Wurzburg, Wurzburg, Germany

fYear

2009

fDate

14-18 June 2009

Firstpage

1

Lastpage

6

Abstract

Pre-congestion notification (PCN) defines admissible rates (AR) and supportable rates (SR) per link and marks the PCN traffic rate above these thresholds as AR- or SR-overload. The IETF standardizes simple mechanisms for admission control (AC) and flow termination (FT) based on this PCN-feedback for high-priority DiffServ traffic. While admission control (AC) has been extensively discussed in the literature, flow termination (FT) is a new control function. In this paper we propose an algorithm that converts marked AR-overload into marked SR-overload by unmarking appropriate packets. Classic marked flow termination (MFT) is based on marked AR-overload and works well even with a small number of PCN flows per ingress-egress aggregate and in case of multipath routing. Thanks to the new marking converter MFT also works with marked AR-overload so that a single marking scheme suffices to support AC and FT. We investigate whether MFT with marking conversion based on AR-overload retains the benefits classic MFT.

Keywords

DiffServ networks; telecommunication congestion control; telecommunication traffic; DiffServ traffic; admissible rates; admission control; marked flow termination; pre-congestion notification; supportable rates; Admission control; Aggregates; Communication system traffic control; Communications Society; Computer science; Diffserv networks; Personal communication networks; Routing; Strontium; Telecommunication traffic;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2009. ICC '09. IEEE International Conference on

Conference_Location

Dresden

ISSN

1938-1883

Print_ISBN

978-1-4244-3435-0

Electronic_ISBN

1938-1883

Type

conf

DOI

10.1109/ICC.2009.5199164

Filename

5199164