The sophisticated Quality-of-Service (QoS) demands of research, education and commercial network service providers require new services in current ``best-effort'' Internet architecture. The Internet must enable applications that demand specific services to profit from a set of differentiated traffic classes, which support either relative or absolute types of quality of service, or both. This paper focuses on the design of scalable buffer management and queueing strategies in a QoS-enabled Internet. A threshold-based buffer management to be used mainly in core routers is proposed and evaluated. A new buffer management scheme, called Differentiated Random Drop (DRD) scheme, is introduced. Combined with simple first-come, first-served (FCFS) scheduling, the scheme can support differentiated services (Diffserv) that is being standardized by the IETF.
By: R. Pletka, P. Droz, R. Haas
Published in: RZ3216 in 2000
LIMITED DISTRIBUTION NOTICE:
This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.
Questions about this service can be mailed to reports@us.ibm.com .