229 Copyright © 2012, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 12 DOI: 10.4018/978-1-4666-0203-8.ch012 Md. Shohidul Islam Dhaka University of Engineering & Technology, Bangladesh Md. Niaz Morshed Dhaka University of Engineering & Technology, Bangladesh Sk. Shariful Islam Dhaka University of Engineering & Technology, Bangladesh Md. Mejbahul Azam Dhaka University of Engineering & Technology, Bangladesh Random Early Discard (RED) Queue Evaluation for Congestion Control ABSTRACT Congestion is an un-avoiding issue of networking, and many attempts and mechanisms have been de- vised to avoid and control congestion in diverse ways. Random Early Discard (RED) is one of such type of algorithm that applies the techniques of Active Queue Management (AQM) to prevent and control congestion and to provide a range of Internet performance facilities. In this chapter, performance of RED algorithm has been measured from different point of views. RED works with Transmission Control Protocol (TCP), and since TCP has several variants, the authors investigated which versions of TCP behave well with RED in terms of few network parameters. Also, performance of RED has been com- pared with its counterpart Drop Tail algorithm. These statistics are immensely necessary to select the best protocol for Internet performance optimization.