NF-switch: VNFs-enabled SDN switches for high performance service function chaining

2017 IEEE 25th International Conference on Network Protocols (ICNP) Pub Date : 2017-10-01 DOI:10.1109/ICNP.2017.8117601

Cheng-Liang Hsieh, N. Weng

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引用次数: 6

Abstract

Current Software-Defined Networking (SDN) switch examines many packet headers to support the flow-based packet forwarding. To support the application-based forwarding for a service function chaining (SFC), SDN switch requires packet header modifications to identify the processing status and multiple packet matchings to steer the network traffics to different VMs in a specific order. Both challenges require significant computation resources in a system and result in severe system performance degradation. To improve the system performance and keep the flexibility, this paper proposes NF-Switch to eliminate the requirement of packet modifications and to reduce the number of matchings for the application-based forwarding. Compared to the native implementation, our experimental results show that NF-Switch reduces the system processing latency to one quarter and increases the system throughput about 3 times for a SFC with 10 network functions (NFs). Moreover, the proposed solution maintains the content switching time to update the implemented SFC for a better system scalability regarding to the number of NFs in a SFC.

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NF-switch:启用vnfs功能的SDN交换机，实现高性能业务功能链

当前的软件定义网络(SDN)交换机检查许多数据包头以支持基于流的数据包转发。为了支持基于应用的SFC (service function chains)转发，SDN交换机通过修改报文头来识别处理状态，并通过多次报文匹配来引导网络流量按照特定的顺序流向不同的虚拟机。这两种挑战都需要系统中大量的计算资源，并导致严重的系统性能下降。为了提高系统的性能和保持灵活性，本文提出了NF-Switch，消除了对数据包修改的要求，减少了基于应用的转发的匹配次数。与本机实现相比，我们的实验结果表明，对于具有10个网络功能(NFs)的SFC, NF-Switch将系统处理延迟降低到四分之一，并将系统吞吐量提高约3倍。此外，所提出的解决方案保留了更新已实现的SFC的内容切换时间，以便根据SFC中的NFs数量提供更好的系统可伸缩性。

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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来源期刊

2017 IEEE 25th International Conference on Network Protocols (ICNP)

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