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A Study of Core-Stateless Mechanism for Fair Bandwidth Allocation  

Kim, Hwa-Suk (한국전자통신연구원 네트워크연구소 네트워크구조팀)
Kim, Sang-Ha (충남대학교 컴퓨터과학과 내트워크 연구실)
Kim, Young-Bu (한국전자통신연구원 네트워크연구소 네트워크구조팀)
Abstract
Fair bandwidth allocations at routers protect adaptive flows from non-adaptive ones and may simplify end-to end congestion control. However, traditional fair bandwidth allocation mechanisms, like Weighted Fair Queueing and Flow Random Early Drop, maintain state, manage buffera and perform packet scheduling on a per-flow basis. These mechanisms are more complex and less scalable than simple FIFO queueing when they are used in the interi or of a high-speed network. Recently, to overcome the implementation complexity problem and address the scalability and robustness, several fair bandwidth allocation mechanisms without per-flow state in the interior routers are proposed. Core-Stateless Fair Queueing and Rainbow Fair Queuing are approximates fair queueing in the core-stateless networks. In this paper, we proposed simple Layered Fair Queueing (SLFQ), another core-stateless mechanism to approximate fair bandwidth allocation without per-flow state. SLFQ use simple layered scheme for packet labeling and has simpler packet dropping algorithm than other core-stateless fair bandwidth allocation mechanisms. We presente simulations and evaluated the performance of SLFQ in comparison to other schemes. We also discussed other are as to which SLFQ is applicable.
Keywords
Core-stateless; Fairness; CSFQ;
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Times Cited By KSCI : 1  (Citation Analysis)
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