Efficient big link allocation scheme in virtualized software-defined networking
Efficient big link allocation scheme in virtualized software-defined networking
复制标题
虚拟化软件定义网络中高效的大链路分配方案
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Yoo
中科院分区：
文献类型：
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作者：
Wontae Jeong;Gyeongsik Yang;Seong;C. Yoo
我们提出了一个有效的资源分配方案，在虚拟化软件定义网络的大链路。基于软件定义网络的网络虚拟化提供了大链路概念，以促进简单的网络管理-大链路将一组交换机和链路映射到单个虚拟链路。然而，本文报告了一个大链路的问题，即虚拟化SDN环境中存在严重的性能下降。我们找到了原因：现有的网络管理程序在为大链路分配物理资源时没有考虑网络流量。为了解决这个问题，我们提出了大链路分配方案（BAS），考虑网络流量时，分配和重新分配资源的大链路。通过OpenVirteX实现了一个原型系统，实验表明，采用BAS的大链路的吞吐量是不采用BAS的大链路的4倍。此外，通过在OpenVirteX中包含计时器，BAS减少了不必要的资源重新分配，从而降低了开销。
We propose an efficient resource allocation scheme for big links in virtualized software-defined networking. Network virtualization based on software-defined networking provides big link concept to facilitate simple network management — big link maps a set of switches and links into a single virtual link. However, this paper reports an issue of the big link in that there is a severe performance degradation in virtualized SDN environments. We find the cause: the existing network hypervisors do not consider the network traffic when allocating physical resources to a big link. To address this issue, we present big link allocation scheme (BAS) that considers network traffic when allocating and reallocating resources to a big link. A prototype implementation is done with OpenVirteX, and experiments demonstrate that the big link with BAS achieves four times greater throughput than that of the big link without BAS. Moreover, by including a timer in OpenVirteX, the BAS decreases unnecessary resource reallocations, which reduces overhead.