Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements

M. Becke, Hakim Adhari, E. Rathgeb, Fu Fa, Xiong Yang, Xing Zhou
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引用次数: 44

Abstract

The market penetration of access devices with multiple network interfaces has increased dramatically over the last few years. As a consequence, there is a strong interest to use all of the available interfaces concurrently to improve data throughput. Corresponding extensions of established Transport protocols are receiving considerable attention within research and standardization. Currently two approaches are in the focus of the IETF: The Multipath TCP (MPTCP) extension for TCP and the Concurrent Multipath Transfer extension for SCTP (CMT-SCTP). This paper evaluates and compares implementations of these two loadsharing protocols by using both lab measurements and intercontinental testbed realized via the Internet between Europe and China. The experiments show that some performance critical aspects have not been taken into account in previous studies. Furthermore, they show that the simple scenario with two disjoint paths, which is typically used for evaluation, does not sufficiently cover the real Internet environment. Based on these insights, we highlight that the different path management strategies of the two protocols have a significant impact on their performance in real Internet scenarios.
基于洲际测量的多路径TCP和CMT-SCTP的比较
在过去几年中,具有多个网络接口的接入设备的市场渗透率急剧增加。因此,人们非常希望同时使用所有可用的接口来提高数据吞吐量。在研究和标准化方面,已确立的传输协议的相应扩展正受到相当大的关注。目前IETF关注的两种方法是:TCP的多路径TCP (MPTCP)扩展和SCTP的并发多路径传输扩展(CMT-SCTP)。本文通过实验室测量和通过欧洲和中国之间的互联网实现的洲际测试平台,对这两种负载共享协议的实现进行了评估和比较。实验表明,以前的研究没有考虑到一些性能关键方面。此外,他们还表明,通常用于评估的具有两条不相交路径的简单场景并不能充分覆盖真实的互联网环境。基于这些见解,我们强调了两种协议的不同路径管理策略对其在真实互联网场景中的性能有重大影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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