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Detail
Journal Article
Quality-of-Service Mechanisms for Flow-Based Routers
- Authors
- Nam Seok Ko, Sung Back Hong, Kyung Ho Lee, Hong Shik Park, Nam Kim
- Issue Date
- 2008-04
- Citation
- ETRI Journal, v.30, no.2, pp.183-193
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, we propose quality of service mechanisms for flow-based routers which have to handle several million flows at wire speed in high-speed networks. Traffic management mechanisms are proposed for guaranteed traffic and non-guaranteed traffic separately, and then the effective harmonization of the two mechanisms is introduced for real networks in which both traffic types are mixed together. A simple non-work-conserving fair queuing algorithm is proposed for guaranteed traffic, and an adaptive flow-based random early drop algorithm is proposed for non-guaranteed traffic. Based on that basic architecture, we propose a dynamic traffic identification method to dynamically prioritize traffic according to the traffic characteristics of applications. In a high-speed router system, the dynamic traffic identification method could be a good alternative to deep packet inspection, which requires handling of the IP packet header and payload. Through numerical analysis, simulation, and a real system experiment, we demonstrate the performance of the proposed mechanisms.
- KSP Keywords
- Flow-based, Guaranteed Traffic, High speed network, IP packet, Identification method, Numerical Analysis, Quality of Service mechanisms, Queuing algorithm, Real networks, Traffic characteristics, Traffic management