在ns2中仿真网络结构，在OTCL编码中，代理节点的协议代理分别设置为tcp/reno、tcp/Newreno、tcp/Sack1和tcp/Vegas，来模拟这四种算法。附有仿真结果和实验报告。-Network structure in the simulation in ns2, in OTCL coding, the protocol proxy agent node were set to tcp/reno, tcp/Newreno, tcp/Sack1 and tcp/Vegas, to

tcp reno is widely deployed in networks all of the world，and is considered to be the standard protocol of tcp congestion control algorithm．It consists of four mechanisms：Slow Start，Congestion Avoidance，Fast Retransmission and Fast Recovery． B