Open AccessQuality‐of‐Service Mechanisms for Flow‐Based Routers
Author(s) -
Ko NamSeok,
Hong SungBack,
Lee KyungHo,
Park HongShik,
Kim Nam
Publication year - 2008
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.08.1107.0014
Subject(s) - computer science , quality of service , traffic generation model , traffic shaping , payload (computing) , traffic flow (computer networking) , computer network , network packet , header , router , network traffic simulation , queueing theory , network traffic control , throughput , identification (biology) , real time computing , distributed computing , telecommunications , wireless , botany , biology
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.