There are various TCP variants such as Reno, Tahoe, Vegas, SACK and so on. These variants implement algorithms that handle congestion control. In our experiments we have used these variants to measure their performance such as throughput, delay (latency), and drop rate with respect to time and Constant Bit Rate (CBR) - no congestion control, specified bandwidth and sends packets at a specified rate. We have used the NS2 network simulator to perform all our experiments to analyze TCP performance.

翻译：存在多种TCP变体，如Reno、Tahoe、Vegas、SACK等。这些变体实现了处理拥塞控制的算法。在我们的实验中，我们使用这些变体来测量其性能指标，例如吞吐量、延迟（时延）和丢包率，并分析其随时间的变化以及与恒定比特率（CBR）的对比情况——CBR无拥塞控制，在指定带宽下以特定速率发送数据包。我们使用NS2网络模拟器进行所有实验以分析TCP性能。