Scaling beyond packet switch limits with multiple dataplanes
Scaling beyond packet switch limits with multiple dataplanes
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DOI：
10.1145/3555050.3569141
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
Yibo Guo;W. M. Mellette;A. Snoeren;G. Porter
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文献类型：
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作者：
Yibo Guo;W. M. Mellette;A. Snoeren;G. Porter
横向扩展数据中心网络结构使网络运营商能够将改进的链路和交换机速度直接转化为终端主机吞吐量。不幸的是，底层CMOS分组交换芯片制造路线图的限制意味着以太网、链路和交换机的速度无法满足需求。因此，运营商已经在网络的核心中引入了替代的并行结构设计，其通过简单地在N个并行网络结构中的任何一个上转发流量来提供N倍的带宽。在这项工作中，我们考虑将这种并行网络的想法一直扩展到最终主机。我们的初步印象发现，直接应用现有的路径选择和转发技术导致性能不佳。相反，我们表明，适当的路径选择和转发协议，不仅可以提高现有的，同质的并行结构的性能，但使异构并行网络结构的发展，可以提供更高的带宽，更低的延迟，并提高弹性比传统的设计构造从相同的组成组件。
Scale-out datacenter network fabrics enable network operators to translate improved link and switch speeds directly into end-host throughput. Unfortunately, limits in the underlying CMOS packet switch chip manufacturing roadmap mean that NICs, links, and switches are not getting faster fast enough to meet demand. As a result, operators have introduced alternative, parallel fabric designs in the core of the network that deliver N-times the bandwidth by simply forwarding traffic over any of N parallel network fabrics. In this work, we consider extending this parallel network idea all the way to the end host. Our initial impressions found that direct application of existing path selection and forwarding techniques resulted in poor performance. Instead, we show that appropriate path selection and forwarding protocols can not only improve the performance of existing, homogeneous parallel fabrics, but enable the development of heterogeneous parallel network fabrics that can deliver even higher bandwidth, lower latency, and improved resiliency than traditional designs constructed from the same constituent components.