Improving SD-WAN Resilience: From Vertical Handoff to WAN-Aware MPTCP
Improving SD-WAN Resilience: From Vertical Handoff to WAN-Aware MPTCP
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DOI：
10.1109/tnsm.2021.3052471
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发表时间：
2021-03
影响因子：
5.3
通讯作者：
Yang Zhang;J. Tourrilhes;Zhi-Li Zhang;P. Sharma
中科院分区：
文献类型：
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作者：
Yang Zhang;J. Tourrilhes;Zhi-Li Zhang;P. Sharma
企业网站网络与中央办公室网络/云数据中心之间的广泛连通性已迅速发展。 Wan Aware MPTCP无缝将多个WAN链接到一个“大型管道”中，以使WAN链接失败的应用程序降级最小化，我们利用MPTCP的交通拥堵。现实世界中的部署，我们证明了在现有SD-WAN解决方案上的弹性和吞吐量方面，WAN感知MPTCP的性能提高。
Demands for wide-area connectivity between enterprise site-edge networks and central office core networks/cloud data centers have grown rapidly. Various software defined wide area network (SD-WAN) solutions have been developed with the primary aim of improving WAN link utilization. However, mechanisms used by existing SD-WAN solutions fail to provide high reliability and performance required by today’s edge to cloud applications. In this article, we present WAN-aware MPTCP which seamlessly aggregates multiple WAN links into a “big pipe” for better WAN resilience thus minimizing application performance degradation under WAN link failures. We leverage the congestion control of MPTCP to balance traffic across multiple WAN links. The key innovation is to combine LAN virtualization at end systems with WAN virtualization at SD-WAN gateways. Through evaluation in both emulated testbeds and real-world deployment, we demonstrate the performance gain of WAN-aware MPTCP in terms of resilience and throughput over existing SD-WAN solutions.