Computer Networks - Congestion Control Analysis and File Sharing

TCP NewRenoPlus

• Housed in newrenoplus/ is the Experimentation and Analysis of current TCP Congestion Control Protocols (CCPs) - Vegas, Reno, Westwood and Cubic.

• Simulation was performed on the ns3-29 software.

• The Congestion Window plots, the log files and packet captures for all the variations of experiments (varying Channel Rates, Application Rates) are stashed in the results/ subdirectory.

• To run, execute run.sh, which handles all parameter selection and topology selection.

• Add TcpNewRenoPlus.cc and TcpNewRenoPlus.h to ns3's TCP files to use it for Congestion Control.

• tcp_protocols.pdf presents the complete analysis on the performance of these protocols.

Peer-Server-Peer Distribution Mechanism

• Code housed in PSP directory.

• An attempt at obtaining the best-of-both-worlds benefits from P2P and a fully Client-Server File sharing.

• Objective : File sharing between nodes, node queryies caches for file, if not in cache then request forwarded to other nodes.

• A Cache, housed in lrupart[12].py is used to aid the distribution as well.

• We experiment with using TCP and UDP for the Data and Control Planes, as well as the optimum Caching required.

• A complete Analysis of performance is done in analysis.pdf.