Performance & Analysis of REM, RED, & GREEN AQM Algorithms in Congestion Control

Congestion in a network may occur when the load on the network is greater than the capacity of the network In this paper we analyzed active queue management algorithms with respect to their abilities of maintaining high resource utilization, identifying and restricting disproportionate bandwidth usage, and their deployment complexity. We compare the performance of RED, REM, and GREEN based on simulation results. AQM algorithm is a solution to the problem of congestion control in the Internet. Congested link causes many problems such as large delay, underutilization of the link and packet drops in burst. This paper discusses algorithms based on various congestion-metrics and classifies them based on certain factors. This helps in identifying the algorithms that regulate the congestion more effectively. Keywords— Active Queue Management (AQM), Congestion Control, GREEN, Random Early Detection (RED), Random Exponential Marking (REM), RTT.