Traffic Monitoring using Isolate and Control Algorithm in TCP/AQM Networks

To support the myriad of envisioned communication products of the future, there is a need to develop a network infrastructure that can provide larger bandwidth, with better control of quality of service (QoS). However, with increasing demand for applications running over packet networks, congestion at the intermediate nodes (e.g., routers and switches) can be a serious problem. Consequences include long delays, large delay variation and high packet loss rates. Different solutions requiring varying levels of modification to the currently used algorithms have been proposed both for responsive (e.g., TCP) and unresponsive (e.g., UDP) protocols. However, most of the solutions are either too complicated to implement in real life or not general enough to be applicable to an arbitrary network topology. In this project a new AQM algorithm ICU AQM (Isolate and Control- AQM) which effectively detects unresponsive flows and controls them based on the network load status is proposed in order to strengthen the robustness of Internet against unresponsive flows. ICU AQM algorithm is used to detect and isolate the unresponsive flows which in turn results in protection to responsive flows. The project work is simulated using NS2. The results are compared with other AQM algorithms to show the increase in the performance of the proposed algorithm.