摘要： 传统TCP协议在现代高速网络中传输性能存在瓶颈｡基于NS2，通过改变瓶颈带宽､往返时延及TCP并行流数等参数，仿真实验了各种TCP改进协议的传输性能，在吞吐率､时延和丢包率等性能指标上对各种协议进行比较｡结果表明，多数改进协议在某些方面表现出比传统TCP协议更好的性能，其中采用显式拥塞反馈改进方案的XCP和VCP协议性能表现最好｡
关键词:
高速网络,
TCP协议,
性能比较,
NS2仿真
Abstract: There is performance bottleneck while using the traditional TCP protocol in the modern high-speed network. Based on NS-2, by changing the bottleneck bandwidth, Round Trip Delay(RTT) and parallel TCP number, all TCP variants are simulated, and their performance on the aspects of throughput, delay and packet loss rate is compared. The result indicates that most TCP variants display better performance than the traditional TCP protocol on some aspects. Among them, XCP and VCP, which adopt the explicit congestion feedback solution, have the best performance.
Key words:
high-speed network,
TCP protocol,
performance comparison,
NS2 simulation
中图分类号:
任勇毛;唐海娜;李 俊;钱华林. 高速网络TCP改进协议NS2仿真性能比较[J]. 计算机工程, 2009, 35(2): 6-9.
REN Yong-mao; TANG Hai-na; LI Jun; QIAN Hua-lin. Performance Comparison of TCP Variants for High-speed Network by NS2 Simulation[J]. Computer Engineering, 2009, 35(2): 6-9.