kathar:一个基于容器的框架,用于实现网络功能虚拟化和软件定义网络

Gaetano Bonofiglio, Veronica Iovinella, Gabriele Lospoto, G. Battista
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引用次数: 22

摘要

网络功能虚拟化(NFV)和软件定义网络(SDN)通过在任何级别引入软件,旨在将逻辑与硬件解耦,从而深刻地改变了网络领域。它们一起带来了几个好处,主要是在可伸缩性和灵活性方面。到目前为止,从路由和体系结构的角度来看,SDN已经被用来支持NFV。在本文中,我们介绍了kathar,一个基于容器的框架,它允许网络运营商通过采用新兴的数据平面可编程功能(如p4兼容交换机)来部署虚拟网络功能(VNFs)。它还支持SDN和传统路由协议共存,以便建立任意复杂的网络。作为一个副作用,由于kathar,我们证明了通过特定用途的设备实现NFV是可行的,它在保留NFV优势的同时提供了性能增益。我们测量了kathar的资源消耗,并表明它的性能比使用虚拟机实现虚拟网络的框架好几个数量级。
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Kathará: A container-based framework for implementing network function virtualization and software defined networks
Network Function Virtualization (NFV) and Software-Defined Networking (SDN) are deeply changing the networking field by introducing software at any level, aiming at decoupling the logic from the hardware. Together, they bring several benefits, mostly in terms of scalability and flexibility. Up to now, SDN has been used to support NFV from the routing and the architectural point of view. In this paper we present Kathará, a framework based on con­tainers, that allows network operators to deploy Virtual Network Functions (VNFs) through the adoption of emerging data-plane programmable capabilities, such as P4-compliant switches. It also supports the coexistence of SDN and traditional routing protocols in order to set up arbitrarily complex networks. As a side effect, thanks to Kathará, we demonstrate that implementing NFV by means of specific-purpose equipment is feasible and it provides a gain in performance while preserving the benefits of NFV. We measure the resource consumption of Kathará and we show that it performs better than frameworks that implement virtual networks using virtual machines by several orders of magnitude.
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