A Scalable VPN Gateway for Multi-Tenant Cloud Services

Mina Tahmasbi Arashloo, P. Shirshov, Rohan Gandhi, Guohan Lu, Lihua Yuan, J. Rexford
{"title":"A Scalable VPN Gateway for Multi-Tenant Cloud Services","authors":"Mina Tahmasbi Arashloo, P. Shirshov, Rohan Gandhi, Guohan Lu, Lihua Yuan, J. Rexford","doi":"10.1145/3211852.3211860","DOIUrl":null,"url":null,"abstract":"Major cloud providers offer networks of virtual machines with private IP addresses as a service on the cloud. To isolate the address space of different customers, customers are required to tunnel their traffic to a Virtual Private Network (VPN) gateway, which is typically a middlebox inside the cloud that internally tunnels each packet to the correct destination. To improve performance, an increasing number of enterprises connect directly to the cloud provider’s network at the edge, to a device we call the provider’s edge (PE). PE is a chokepoint for customer’s traffic to the cloud, and therefore a natural candidate for implementing network functions concerning customers’ virtual networks, including the VPN gateway, to avoid a detour to middleboxes inside the cloud.\n At the scale of today’s cloud providers, VPN gateways need to maintain information for around a million internal tunnels. We argue that no single commodity device can handle these many tunnels while providing a high enough port density to connect to hundreds of cloud customers at the edge. Thus, in this paper, we propose a hybrid architecture for the PE, consisting of a commodity switch, connected to a commodity server which uses Data-Plane Development Kit (DPDK) for fast packet processing. This architecture enables a variety of network functions at the edge by offering the benefits of both hardware and software data planes. We implement a scalable VPN gateway on our proposed PE and show that it matches the scale requirements of today’s cloud providers while processing packets close to line rate.","PeriodicalId":403234,"journal":{"name":"Comput. Commun. Rev.","volume":"45 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comput. Commun. Rev.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3211852.3211860","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10

Abstract

Major cloud providers offer networks of virtual machines with private IP addresses as a service on the cloud. To isolate the address space of different customers, customers are required to tunnel their traffic to a Virtual Private Network (VPN) gateway, which is typically a middlebox inside the cloud that internally tunnels each packet to the correct destination. To improve performance, an increasing number of enterprises connect directly to the cloud provider’s network at the edge, to a device we call the provider’s edge (PE). PE is a chokepoint for customer’s traffic to the cloud, and therefore a natural candidate for implementing network functions concerning customers’ virtual networks, including the VPN gateway, to avoid a detour to middleboxes inside the cloud. At the scale of today’s cloud providers, VPN gateways need to maintain information for around a million internal tunnels. We argue that no single commodity device can handle these many tunnels while providing a high enough port density to connect to hundreds of cloud customers at the edge. Thus, in this paper, we propose a hybrid architecture for the PE, consisting of a commodity switch, connected to a commodity server which uses Data-Plane Development Kit (DPDK) for fast packet processing. This architecture enables a variety of network functions at the edge by offering the benefits of both hardware and software data planes. We implement a scalable VPN gateway on our proposed PE and show that it matches the scale requirements of today’s cloud providers while processing packets close to line rate.
面向多租户云服务的可扩展VPN网关
主要的云提供商提供具有私有IP地址的虚拟机网络作为云上的服务。为了隔离不同客户的地址空间,客户需要将其流量隧道到虚拟专用网(VPN)网关,该网关通常是云中的一个中间盒,在内部将每个数据包隧道到正确的目的地。为了提高性能,越来越多的企业直接连接到云提供商的边缘网络,我们称之为提供商的边缘(PE)设备。PE是客户到云的流量的阻塞点,因此是实现与客户虚拟网络(包括VPN网关)有关的网络功能的自然候选者,以避免绕路到云中的中间箱。以今天的云提供商的规模来看,VPN网关需要维护大约一百万个内部隧道的信息。我们认为,没有一个单一的商用设备可以处理这么多的隧道,同时提供足够高的端口密度来连接边缘的数百个云客户。因此,在本文中,我们提出了一种PE的混合架构,包括一个普通交换机,连接到一个使用数据平面开发工具包(DPDK)进行快速数据包处理的普通服务器。这种架构通过提供硬件和软件数据平面的优势,在边缘实现各种网络功能。我们在我们提出的PE上实现了一个可扩展的VPN网关,并表明它在处理接近线速率的数据包时符合当今云提供商的规模要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信