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。-In the ns2 simulation of the network structure, in the OTCL encoding, the proxy node protocol agents are set to TCP/Reno, TCP/Newreno, TCP/Sack1 and tcp/Vegas, to simulate these four algorithms. With simulation results and experimental reports.