高速长距离光网络传输协议性能分析

Performance Analysis of Transport Protocol over Fast Long Distance Optical Network

随着光网络技术、IP与光融合等技术的发展,互联网领域出现了高速长距离光网络.中美俄环球科教网络(GLORIAD)是个典型的高速长距离光网络.在基于GLORIAD的测量和实验中,发现带宽利用率存在瓶颈,通过进一步分析高速长距离光网络的特点和传输协议TCP的机制,发现了以TCP协议机制为主的影响传输性能的原因.文章对此进行了比较全面的分析和阐述,并提出了TCP协议改进思路和进一步研究方向.

With the development of optical network and integration of IP and optical technology, fast long distance optical network has emerged in the Internet field. Global Ring Network for Advanced Applications Development （GLORIAD） is a typical network of this kind. During the measurement and experiments based on GLORIAD, the bandwidth utilization bottleneck issue has been discovered. By analyzing the features of fast long distance optical network and the mechanism of transport protocol TCP, the reasons, mainly including TCP issues ,which affect the transfer performance, have been found. This paper gives a comprehensive analysis on these issues, and research directions on improving data transfer performance.